Showing posts with label How to. Show all posts
Showing posts with label How to. Show all posts

Sunday, October 16, 2016

How to maximize using Siri in macOS Sierra



Image: Brandon Vigliarolo/TechRepublic


Siri on a Mac is one of those seemingly innocuous features that can change the way you work. Learn tricks for making the most of the macOS Sierra integration.

By Erik Eckel | October 13, 2016, 8:14 AM PST


When I first heard Apple was bringing Siri to the Mac, I didn't believe the enhancement would prove that useful. But, properly wielded, Siri proves to be a surprisingly helpful feature. The trick is to know Siri's desktop and laptop capabilities, as well as the feature's limitations.
Understand Siri's constraints

Don't ask Siri to close an application. She can't—she's not allowed. She'll offer a quick apology, and that's all you get. And, it makes sense—I'm confident Apple precluded the ability for fear of losing unsaved data or accidentally closing an application in the middle of a critical process.

You also shouldn't try using Siri in noisy environments because, odds are, she's not going to be able to understand your commands—and, you'll look a little strange talking in public to your computer. But when you're in the privacy of your office or another quiet location where the audio won't prove disruptive to others, Siri will pause background programming long enough to provide a fair shot at speaking commands.

I don't recommend leveraging Siri to perform complex tasks, such as editing photos, editing spreadsheets or documents, or composing presentations. It's all about possessing accurate expectations.

Follow these tips and tricks for using Siri

Several options exist for summoning Siri. By default, you can press and hold the Command and Space keys. Or, you can click the Siri icon macOS Sierra Places, by default, within the Dock. Or, you can click the Siri icon from the Mac's menu bar. You can also

Wednesday, October 12, 2016

How to get a refund for a Samsung Galaxy Note7





Samsung recently killed production of its Galaxy Note7 devices for good. Here's how you can get a refund, or exchange your Note7.

By Conner Forrest | October 11, 2016, 12:18 PM PST


Samsung recently stopped production of its Galaxy Note7 smartphones and is encouraging users to power them down and turn them in. Here's how to return or exchange a Samsung Galaxy Note7.
Back up your data to your preferred location before returning your device.
If desired, after backing up your data, perform a factory reset on the device to clear it of any personal data.
Determine if you want a refund or exchange.
Determine where you purchased your device (through Samsung directly, through a carrier, or through a retailer like Best Buy).
If you purchased the phone through Samsung, follow the formal Customer Guidance process or call 1-844-365-6197 for additional help.
If you purchased the phone through a carrier or retailer, bring the phone to one of their physical locations or complete their online process for returns and exchanges (details below).
Select a new device and sync your data.

When contacted for more details on the process, Samsung responded by sending a link to the same Customer Guidance page listed above. According to Samsung, to fully process your return you will need to provide some personal information such as your name, address, and contact number. You will likely also need to find the original IMEI number of your Note7 device and a

Tuesday, October 11, 2016

How to upgrade openSUSE Leap to openSUSE Tumbleweed



If you're wanting to check out the rolling release version of openSUSE, here's the step-by-step process of upgrading the standard release, Leap, to Tumbleweed.

By Jack Wallen | October 10, 2016, 5:37 AM PST



Recently I decided to give openSUSE Tumbleweed a go. My initial reasoning was so that I could experience the latest iteration of the GNOME desktop, without having to bother with attempting to upgrade Ubuntu GNOME. I knew about Tumbleweed and how it was a rolling release distribution that will always have the latest release of every software stack installed.

What I found, however, was so much more. Yes, Tumbleweed is a rolling distribution (similar to Arch or Gentoo), but Tumbleweed does it a bit differently. And that difference matters.

Consider this. One of the reasons why some are opposed the rolling release distribution is that the cutting edge releases of various software packages can lead to a problem with the system. I've experienced this before, and it's often a nightmare to resolve. Fortunately, the openSUSE developers have figured a way to avoid this and it's genius.
The way of the tumbleweed



Most rolling release distributions upgrade to the latest releases without thinking. So long as the package dependencies are met, the package will be installed. That lack of smart design is what often leads to problems. How openSUSE Tumbleweed gets around this is by building the distribution as a single, cohesive whole. When an update is run, if a package would break the cohesion of the whole (or simply invalidate another package), then all dependent packages are rebuilt as if it were a traditional distribution. This is all handled by way of the Open Build Service.

This makes for an incredibly rock-solid rolling release Linux distribution.

But what if you already have an openSUSE Leap installation, and you want to migrate it over to Tumbleweed? Do you have to download the Tumbleweed ISO image and

How to maximize OnePlus phone's Shelf, a hidden productivity gem




OnePlus smartphone owners, you might be missing out on some of Shelf's great features. Check out these tips on using Shelf.

By Jack Wallen | October 10, 2016, 8:33 AM PST


If you're the proud owner of a OnePlus device, you've probably wondered what Shelf has to offer. Or, you may not even know it exists.

Shelf is essentially a page on your home screen that allows you to take memos, add widgets, gain access to your most-used apps, and get a quick glimpse of the weather. Swipe right (from the left edge of your OnePlus screen) and you'll see Shelf in action. To some users, Shelf might be little more than an afterthought; however, with a bit of attention and knowledge about how to work with it, Shelf can actually be quite useful.


During the setup of your OnePlus device, you may have opted to disable Shelf, not knowing what it was. If you want to give it a go, here's how to enable it.
Long press a blank spot on your screen.
Tap Customize.
Tap to Enable Shelf (Figure A).



The first thing you might notice is the row of app icons and contacts, which are taken directly from your App Drawer and your Contacts—both of these are widgets can be removed and resized. When you resize either the app launcher or the contact widget, you'll find you get

Wednesday, October 5, 2016

How to use the Swift Playgrounds iPad app to code on the go



Image: Apple
Swift Playgrounds is an easy way to learn Swift programming and to test code inside of Xcode, and now the feature is available for iOS 10. Learn how to use the Swift Playgrounds app for iPad.

By Cory Bohon | October 4, 2016, 8:13 AM PST


Apple announced Swift Playgrounds earlier this year during WWDC '16, andreleased it alongside iOS 10 in September. This new app is great for beginner coders and professional developers, because it allows you to officially write Swift code and have it run on the iPad. This is a first for iOS—Apple has never allowed apps that can compile or interpret code.

Perhaps the biggest feature of the Swift Playgrounds app for iOS is the ability to download tutorial projects to learn Swift; these projects are pretty self-explanatory so I won't cover them. I'll walk you through the workings of Swift Playgrounds, and how to write own code inside the app.

SEE: Apple's Swift programming language: The smart person's guide
What is a Playground?

Swift is Apple's newest programming language, and it can be used to write apps on all of its platforms: iOS, macOS, tvOS, and watchOS.


More about Mobility
8 reasons why professionals should get the iPhone 7
Report: Your business is wasting money on BYOD reimbursements
iOS 10 and the enterprise
Subscribe to TechRepublic's Mobile Enterprise newsletter

Playgrounds are a feature of Swift and the Xcode IDE that allows for quick compiles in a REPL (read-eval-print-loop) style interface, mimicking the REPL found in run-time interpreted languages like Ruby. Playgrounds are simple files that contain Swift code and can be compiled and run quickly, providing output logging to the user as the code is executed.

For example, if you write a for loop that iterates over an array to add new items, then for each iteration of this for loop, the playground will show the index of the loop and the output of the code executed in that loop. In this scenario, it would

How to maximize disk space using macOS Sierra's new storage management features






Freeing needed disk space is becoming easier, thanks to new macOS Sierra storage management enhancements. Learn ways to manage storage locally and in iCloud using these features.

By Erik Eckel | October 4, 2016, 9:16 AM PST

Maintaining sufficient disk free space is a long-running challenge that became more difficult when SSDs—typically possessing smaller storage allocations—arrived. Fortunately, storage management tools ease the strain.

Apple's recently released macOS Sierra operating system includes new storage optimization features that simplify managing and freeing disk space. You can access these file management and storage tools by clicking the menu bar's Apple icon, selecting About This Mac, and clicking the Storage tab to access the Manage button. The Manage button opens the new disk management utilities (Figure A).

Figure A

macOS Sierra includes disk management features to help Mac users administer file storage and free space.

macOS Sierra provides recommendations, which include storing all Desktop and Documents folders in iCloud. Clicking the Store In iCloud button prompts the operating system to store files from those locations in iCloud and keep only recently opened files on the local disk, when storage space is required. Those preferences can be modified within System Preferences, should users change their

Tuesday, October 4, 2016

How to economize the rate of IT spend: Five financial strategies



OCTOBER 3, 2016 | BY MARY SHACKLETT

Organizations often try to expedite projects and tech implementations to quickly demonstrate ROI. But in some cases, a better plan is to slow the rate of IT spend to optimize budgets and control costs.




Recent Tech Pro Research survey data indicates that IT budgets will continue their conservative yet upward trends by staying within 5% of 2016 levels for 2017. However, modestly increased IT budgets don't mean that CEOs, CFOs, and CIOs aren't going to expect even better results from their technology investments than they are already getting.

Most present investment optimization has been occurring on the IT side. It has been realized through the shortening of projects and the creation of faster time-to-market for new technology. Likewise, the payoffs of technology investments and implementations are being recouped in shorter periods of time to prove out technology returns on investment (ROI)--with many organizations expecting that a newly implemented technology project will pay for itself within one year's time.

But there's another financial side to getting the most out of IT spend that has little to do with how quickly technology is put to work. These financial strategies are used by companies to slow down the rate of payment on new technologies so that organizations can

Monday, October 3, 2016

How to Keep Up With Social Media Feeds Using One Nifty App



Nancy Messieh October 3, 2016 1 minute

Keeping up with several social media profiles can quickly become overwhelming and information overload is inevitable. Add to that the algorithms used on social networks, it might be difficult to catch all the posts you want to see. Bynd, an iOS app, aims to solve that problem.How (and Why) to Disable Algorithmic Feeds on Twitter, Instagram, and Facebook How (and Why) to Disable Algorithmic Feeds on Twitter, Instagram, and FacebookTwitter and Instagram are now following Facebook with algorithmic timelines. See what this change means for you, why you might want to disable it, and how to go back to the old view.READ MORE

When you first download the app, you can log in with your Twitter or Facebook account. You cannot sign up using your email address. In my experience, logging in with Twitter alone did not get you access to the app. Rather, it appears that you have to log in with both Facebook and Twitter.

Once you’re in, you can create your customized social media feed by adding individual users or pages from your Twitter and Facebook. You can also follow the latest and most popular posts on Designer News and Hacker News, as well as your favorite news sources — from CNN and The Guardian, to the BBC and NFL News.



Tech blogs like The Verge, Recode, and TechCrunch are also included in the news sources. While Bynd is free, if you want to add Instagram or YouTube feeds, there’s an in-app purchase of $0.99 per site. Bynd does limit you to up to 100 feeds from all of your

How to deploy a Ceph storage cluster




By Jack Wallen | October 2, 2016, 4:51 PM PST


Deploying a storage cluster doesn't have to wreck your sanity. See how simple it can be to deploy an object or block storage-capable Ceph cluster.



If you're looking to deploy a local Amazon Simple Storage Solution (Amazon S3) or Elastic Block Store (EBS) system, you probably believe it's almost impossible to pull off—it's not. Actually, it can be done with the help of Ceph.

A Ceph cluster can provide object or block storage across a network, which will give you that Amazon-like system. To make this happen we'll use a Ubuntu 16.04 virtual machine and three clones. Our cluster will be comprised of two storage nodes and one monitoring node. The first virtual machine will be used to initially deploy the cluster. This setup

Sunday, October 2, 2016

How to create a Windows 10-based kiosk with Assigned Access







By Greg Shultz | September 30, 2016, 6:12 AM PST

The Assigned Access feature lets you configure a kiosk so that only one app is available. Here's how it works in Windows 10.


A kiosk provides a great way to display information about your company and its products or services. You can also use a kiosk to limit access to a certain application. In Windows 10, the Assigned Access feature allows you to easily configure a system so that the user has access to just a single Windows app. This could be any native Windows 10 app, a Windows app from the Windows Store, or a custom app you have created and side loaded on a Windows 10 system.

In this article, I show how to set up and use the

How to set up passwordless authentication for MySQL






Image: Jack Wallen

If you manage multiple MySQL servers and want a simplified means of logging in, see how to use the new passwordless authentication feature.

By Jack Wallen | September 30, 2016, 7:36 AM PST


If you frequently log into numerous MySQL servers, I bet sometimes you just want in without having to remember which user/password combination goes with which server...or which server is used for which service. This can be exacerbated when

How to update to iOS 10 using Apple Configurator 2























Apple Inc.






Updating to iOS 10 is pretty simple for end users, though it's not a breeze for IT teams, which might have to update hundreds of devices. Apple Configurator 2 can help.




By Jesus Vigo | September 30, 2016, 10:58 AM PST










Apple Configurator 2, the Apple-provided application that allows for mass configuration of iOS-based devices, offers the right blend of user experience and powerful management features to simplify the deployment process for any SMB or enterprise environment. I'll show you how to configure iOS devices for iOS 10 with Apple Configurator 2.




SEE: Screenshots: A complete roundup of new iOS 10 features

Requirements

Apple computer running OS X 10.11.5 or

newer







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Apple Configurator 2

At least one iOS-based device

At least one USB charging cable for your iOS device

Powered USB hub (only required if updating multiple iOS devices at the same time)

Administrative credentials

Update to iOS 10 using Apple Configurator 2




1. Launch the Apple Configurator 2.app and click the Get Started button to access the main screen (Figure A).




Figure A

Image: Jesus Vigo/TechRepublic













2. Power on and connect your iOS device via the USB charging cable to an open USB port or an optional USB hub. The app will detect the model of the iOS device and provide the device name once it's fully connected. If multiple devices are connected at once, they will be displayed onscreen, and a badge will appear with the number of devices ready for configuration (Figure B).




Figure B

Image: Jesus Vigo/TechRepublic













3. Highlight all the devices you wish to update and click the Update button in the toolbar. This will query Apple's database to locate the latest versions of iOS supported for each device and compare them to the database (Figure C) (Figure D).







Figure C

Image: Jesus Vigo/TechRepublic













Figure D

Image: Jesus Vigo/TechRepublic













4. After clicking the Update button when prompted, click the Accept button to agree to Apple's Licensing Terms (Figure E).




Figure E

Image: Jesus Vigo/TechRepublic













5. Apple Configurator 2 will begin to download the latest versions of iOS and save them to the computer. As the download completes, the update process will begin for the devices connected (Figure F) (Figure G).




Figure F

Image: Jesus Vigo/TechRepublic













Figure G

Image: Jesus Vigo/TechRepublic













6. The download process will depend on your internet speeds from your ISP; however, the upgrade process takes about 20 minutes on average, and multiple devices can be upgraded at the same time from the same IPSW firmware file.




When installation is complete, the device will reboot before reconnecting to Apple Configurator 2 again. This is normal operating procedure, and the screen may change to reflect a disconnect during this brief time (Figure H).




Figure H

Image: Jesus Vigo/TechRepublic













7. When the iOS device has been successfully updated, you will be required to unlock the device once to finalize the process. You may not disconnect your newly updated iOS device (Figure I).




Figure I

Image: Jesus Vigo/TechRepublic













With the basic update process completed, you'll find that Apple Configurator 2 has a lot more to offer when deploying specific configuration sets using Blueprints or preparing devices to be securely managed or supervised either manually or Over-the-Air (OTA) using Mobile Device Management (MDM) servers.





Saturday, October 1, 2016

How to install Windows 10 in a VM on a Linux machine




Image: iStockphoto/Pannawat



Learn how to install Windows 10 on your Linux machine using the bundled license key on preassembled systems, and get tips on how to reduce the amount of system resources Windows uses.

By James Sanders | July 11, 2016, 6:20 AM PST


For Linux users, making a clean break from the Microsoft ecosystem is often a rather challenging task. Even in 2016, the possibility of needing Windows to perform some task still exists—perhaps as part of an employer requirement, a dependency on legacy technology such as

How to install and run Dropbox from a headless Linux server




Image: Jack Wallen

If you have a headless Linux server that needs access to files from a Dropbox account, here's what to do.

By Jack Wallen | September 30, 2016, 10:35 PM PST


There may come a time when you need to sync a Dropbox account to a Linux server running without a GUI. When that time comes, you'll be glad that it's pretty easy to do with the help of a few scripts.

I'll walk you through the process of getting Dropbox up and running on

How to completely Destroy a Hard Drive --Ten Methods--




Do you have an inaccessible or otherwise worthless hard drive filled with sensitive data? Do you want to be sure that data never sees the light of day? Once you’ve wiped your hard drive, consider one of these options to further protect your data. These methods will do a pretty good job (but mostly they will just look totally awesome).




Method1Wiping the Data and Removing the Hard Drive


1
Back up your data. It’s easy to forget about all of those MP3s you ripped in the 90s and beloved family pictures when all you can focus on is destroying the cause of your shame and avoiding federal prison. You will, however, want to make sure to back up all of your important and legal data, however, since the whole point of the resulting exercise is that those things will be... you know... gone.



2
Wipe the drive. Always wipe your hard drive before beginning destruction. While the more exciting methods of destruction will do a pretty good job of rendering data irretrievable, they can’t be 100 percent guaranteed (especially if you have reason to believe the government is willing to spend several months and millions of dollars to find your dirty, dirty secrets). Wiping your data and blowing up your drive, however? Yeah, nobody’s getting that back.
Let’s be realistic for a minute here, though: a serious wipe of your computer will probably do the trick. Only someone with very serious equipment would have any chance at recovering your data and even then, there isn’t very much evidence that it’s really possible.


3
Open the computer case. Open your computer case and find the hard disk drive. They are located in different spots in each type of case, sometimes located within a metal box. You may have to look up your particular model if you’re having trouble locating the hard disk drive.


4
Open the hard drive. Open the hard drive casing. This will largely amount to loosening a bunch of screws in different configurations depending on the make and model of your hard drive. Possibly cutting some tape. Be warned that there are often screws hidden underneath labels, so you might have to go poking around.


5
Remove the magnets. You will need to remove the arm and magnet structure in order to reach the platter underneath (your real goal). There are screws involved. It’s pretty straightforward. Remove the magnets carefully because they are seriously very strong and you can really hurt yourself with them.
Seriously, you will struggle to get them off a fridge. You can break fingers with these things. And for the love of whatever you pray to, don’t eat them and don’t let your pets eat them (pets, in this case, includes kids).




6
Remove the platter. This is the thing that looks like it would make a nice mirror. You’ll probably need to unscrew the circular piece at the center which holds in down. This is the thing that stores (the majority at least) of your data. This is the thing you need to destroy. Sometimes there is more than one platter, so pay attention to that.




Method2Hammering the Hard Drive


1
Use a hammer. The fastest, most direct method of destroying the platter is with a hammer. Put it on a surface that can take a beating and is easy to clean up, strap on some goggles and safety gloves, and take out your aggression that’s been pent up ever since George Lucas blasphemed all over what was a perfectly good franchise.
Make sure you’re the only person in the room when you do this; partially so that you don’t hurt anyone by accident with flying bits of glass and metal, and partially so that they don’t become concerned about your sanity levels and have you committed.
Some platters are made out of metal, some are made out of glass and ceramic. The latter will shatter readily. The former will certainly deform, which will make it pretty unusable, but you can also use some of the more exciting methods below if you aren’t convinced.


2
Carefully dispose of the remains. Once it’s in pieces, carefully collect them and dispose of them. The parts may be taken anywhere that recycles electronics. Check your local computer/game retailers, department stores, and thrift shops.




Method3Burning the Hard Drive


1
Hold a trial by fire. While heat alone probably won’t completely destroy data, turning your platters into liquid piles of molten goo is pretty effective. This will be particularly fun if you’re the sort of person that the local fire department knows by name. Whatever method you choose, make sure you’re doing it in an area with some pretty serious ventilation, because a melting hard drive will give off fumes that can possibly kill you.
Use a standard fire. Be it in a fireplace or hobo barrel (preferably the latter), you may be able to get a normal fire hot enough to liquify your hard drive. Toss it on and leave it because it’s probably going to take a while. Fun level: 3
Use a blow torch. Put on some protective gear, hold the platters at a distance with some kind of heat resistant tool, and watch it melt. Make sure the floor below can take a beating. Fun level: 5
Use thermite. For the more adventurous hard drive destroyer, you can seriously overkill the task by filling a large container with sand, placing the platters on the sand, and then lighting a container of thermite over the platters. This is science at it’s best and creates a chemical reaction which produces a lot of heat and a small explosion, so be really careful. Do not use this method indoors. Or near a forest. Or near small children. Or near yourself, really. Fun level: 11
Use sugar and saltpeter. Mix sugar and saltpeter in a soda can and place it over a hard disk in a bucket of sand. This is basically a small bomb, so be really, reallycareful about where you set it off and where you’re standing when it goes off. Fun level: 11




Method4Shooting the Hard Drive


1
Hold a trial by firing squad. Take your hard drive platter to a local firing range or prop it up in another safe location. Makes excellent target practice. Fun level: 7



Method5Magnetizing the Hard Drive


1
Hold a trial by giant magnet. That thing where running a magnet over a computer to erase it is basically a myth. If you want to destroy your data by magnet, you’re going to need to pull out the big guns.


2
Buy some serious, big rare earth magnets. These should work well enough to scramble any remaining data after wiping your drive. And, really, who doesn’t want to own a giant, super-powerful magnet? You will find other uses for it. Surely. Fun level (wiping the drive): 4; fun level (finding other uses for the magnets later): 9
Alternatively, take your hard drive to a local junk or scrap yard...any place you can find with one of those big magnetic cranes for lifting cars and other large scrap. Watch as your drive performs a Cirque du Soleil level of flying-through-the-air as the data is made thoroughly unrecoverable. Fun level: 5. Unreliable though, drives are well shielded against magnetic fields. Physical destruction is best.



Method6Crushing the Hard Drive

1
This one is easy - find a 5 to 10 ton press and crush the life out of the drive by squishing midway between the spindles (drive and heads). This only takes a few seconds, but the results are great.



Method7Melting the Hard Drive


1
Hold a trial by acid. Pretend you’re holding a little witch hunt for your hard drive platter as you dunk it into a container of battery acid or similarly strong acid. You should be able to watch it dissolve. Dispose of the acid in an appropriate way (dumping it in your yard is not an appropriate way, just so you know). Fun level: 6


2
Hold a trial by microwave. Microwaves in and of themselves are not strong enough to destroy data, so don’t think a one second zap will do the trick. Getting the platter hot enough to melt or shatter, however, will render your data unrecoverable.
Buy or salvage an old microwave, preferably one with a push-button method of opening the door. Hook it up outside with an extension cord and set it for 10 minutes. Get very far away (glass platters can shatter under these conditions and are very dangerous). Open the microwave from a distance, with a broom handle or pull string, and use a very long stick to shatter the disk if it didn’t melt or shatter of it’s own accord. Fun level: 6



Method8Using Hardware Tools on the Hard Drive


1
Hold a trial by sandblaster. Rent a sandblaster from your local big-box hardware store, take your platter out to your driveway, and blast away that mirror finish. This will remove the layer of material which stores the data on the platter. You get to look super cool holding that blaster, plus you can use any extra time with the sandblaster to clean more than just your old hard drive. Fun level: 5


2
Hold a trial by saw. Well, okay, don’t use a saw (it won’t work very well). Instead, use an angle cutter, which is similar but sounds less cool. These are easily rented from your local big-box hardware store. Use cheap “C” clamps to hold the platter of your hard drive down to an appropriate surface and cut it straight down the middle. Okay, realistically you’re going to cut it more than once because sparks are going to go flying everywhere and it is going to look like the 4th of July in your garage. Whatever makes you happy. Fun level: 7
Just make sure you’re doing all of your cutting safely and with proper eye gear. Look up pictures of angler cutter injuries. You’ll wish you could unsee all that.


3
Hold a trial by drill bit. This is a common utilitarian-but-no-less-amusing way to destroy your hard drive. Take a drill (you’re going to need a pretty strong bit) and put holes in the hard disk platter. You’ll want to drill several holes in a wide variety of spots in order to guarantee that the data cannot be recovered. Beyond that, have fun with it. Make art. These things do make great Christmas tree decorations. Fun level: 4



Method9Shredding the Hard Drive


1
Hold a trial by industrial shredder. Have you ever seen an industrial shredder? Look it up. Look it up right now. See? Come on. Find a nearby industrial shredder, rent some time with it, and chuck your hard drive in there. Chuck...anything in there really. Maybe not your cat. Fun level: increases exponentially with the number of things you shred.



Method10Using Electrolysis to Dissolve the Hard Drive


1
Get a plastic container big enough to immerse the hard drive in water. Add a packet of sodium bicarbonate. Do not use table salt as this will produce toxic chlorine gas!


2
Find a large pencil. Carefully shave off half the wood leaving the carbon graphite lead intact. This will become your cathode (-) electrode (the electrode must be higher up the galvanic series than aluminium). Also get two thick insulated leads of wire.


3
Get a car battery charger. Do not use a car battery as it is too powerful. Tie one wire from hard drive plater to + positive terminal (reduction electrode) and the other wire from the graphite pencil to the negative terminal (addition electrode).


4
Immerse the hard drive completely in the water. Turn the power on. You should see the water start to bubble and froth, releasing oxygen and hydrogen - it is essential to have an open window nearby!


5
After a 24 hours, your hard drive platter will have lost its shiny mirrored surface (oxidised). It will be partially dissolved into metal powder and salt water.



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