How to Prevent Other Laptops Using Backups Stored in an External Hard Disk

Three Methods:If on Windows 7 or aboveIf you are using OSX (Mac)Securing a pendrive or a flash drive in Mac

If you want your backup to be so secure that no other local computer (anyone else) can use it, there is simple way to do this. What you need is a hard disk; its size will depend on the size of your backup requirements.

Method 1
If on Windows 7 or above

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    If you are using Windows 7 or above, you can simply encrypt the data with BitLocker.
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    Connect your hard disk, and make your backup as you would normally do.
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    After backup, right click on your hard-disk drive and choose BitLocker.
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    Follow the instructions given.
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    Choose a secure password.
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    Wait. It will start encrypting your hard disk. Be patient––this process could be a bit slow on Windows 7.
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    Use your password to access the information backed up. After your hard disk is encrypted it will open with your password. No one can access your backup without the password.

Method 2
If you are using OSX (Mac)

You don't actually have to do anything to protect your data if you're using a Mac. It automatically takes care of it.

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    Use an appropriate hard disk. For backing up your data you need either a Time-Machine-compatible hard disk or Time Capsule.
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    If you have either of these, connect it to your Mac and the program will pop up for backing up your data.
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    Choose a password. Mac will then encrypt your hard disk and convert it into HFS+ format, or you can choose "Mac journaled , encrypted".
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    After the process completes, no one can access your data without the password.

Method 3
Securing a pendrive or a flash drive in Mac

The process for encrypting a pen drive or any other flash drive in Mac is the same as with the hard-drive on Windows.

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    Open your disk utility. This can be found in Menu > Others > Disk Utility.
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    Open the disk utility app. Connect your pendrive or any other flash drive.
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    From the left-hand side choose the disk you want to secure or encrypt.
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    On the right-hand side, click on Erase (located on top).
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    Look for two bars just below it. One shows the format in which your flash drive is formatted (FAT32 , NTFS , Mac Journaled, etc.). The other bar shows the name of your pen drive.
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    Click on your pen drive. A dropdown menu will show pen drive formats. Select "Mac journaled, encrypted."
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    At the bottom click on the Erase tab. It will ask you to create a password. Do that, then create a hint to help you remember the password.
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    Click on Erase.
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    After the process is completed you'll have a secured flash drive.

Tips

  • The disk encrypted with BitLocker will no longer work with Macs, and the disk encrypted with Mac won't work with Windows.
  • You can use the same process to secure your pendrive on Windows.

Sources and Citations

Article Info

Categories: Maintenance and Repair