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This wikiHow teaches you how to set up your computer to boot from an external drive instead of the built-in hard drive. This is useful when you need to run another operating system (such as Linux) or install a tool that requires the internal hard drive to stop working.
Steps
Installing an external hard drive
- Open a search engine (Google for example).
- Enter the manufacturer name, computer model with the keyword “bios key” or “bios key”.
- Press ↵ Enter , select the match, and locate the computer’s BIOS key.
- You can also check out the manuals or online documentation for your computer on the manufacturer’s website.
- On an external hard drive, there is usually an indicator light, which will blink slowly or stay on when the drive is connected.
- On Mac computers, you may need to purchase a USB to Thunderbpt 3 adapter if there are no USB 3.0 (rectangular) ports available.
- When reformatting the drive, you should choose the exFAT file system so that Mac or Windows computers can also access the hard drive.
- Depending on the type of data to be copied to the drive, you may need to format it again. For example, if you use the Live Linux tool to burn a Linux disk image to an external hard drive, the hard drive will automatically format again.
- Formatting will erase all data on the drive.
- Some other examples of boot disk images include File History backups on Windows and Time Machine backups on Mac.
- Third-party services like Clonezilla are also starters.
- If you are using a program like Windows 10 or LiveLinux installation tool to create an external bootable hard drive, skip this step.
- If you are using a program like LiveLinux to burn the ISO file to an external hard drive, this drive will become the boot point in the process.
Boot from an external hard drive on Windows
. Click the Windows icon in the lower left corner of the screen.
at the bottom left of the Start menu. A menu will pop up.
- You may need to select the Advanced tab first to see the “Boot Order” menu.
- BIOS on each computer is different, so don’t be afraid to look for the “Boot Order” option somewhere in the menu.
- In some cases, you can only select USB devices (or similar) in this menu. Then you need to make sure that the external hard drive is the only USB drive connected to the computer when rebooting from the external hard drive.
- In some cases, the keynote is located at the bottom of the screen.
- You may need to confirm this step again by pressing another key.
- For example, if you are installing Linux, you will be asked to select your language and country, enter your user information, and so on.
- If you have the operating system installed and set up on an external hard drive, after completing the BIOS setup, the operating system will open.
Boot from an external hard drive on Mac
. Click the Apple icon in the upper left corner of the screen. A drop-down menu will appear.
- For example, if you are installing Linux, you will be asked to select the language and country, enter user information, and so on.
- If you have the operating system installed and set up on an external hard drive, after completing the BIOS setup, the operating system will open.
Advice
- If you want your Mac to always boot from the external hard drive by default instead of just once, open System Preferences, click Startup Disk , click the padlock icon, enter your credentials, select the hard drive external and then click Restart… . [1] X Research Source
Warning
- If you unplug the external hard drive while it’s booting, the computer will freeze.
This article is co-authored by a team of editors and trained researchers who confirm the accuracy and completeness of the article.
The wikiHow Content Management team carefully monitors the work of editors to ensure that every article is up to a high standard of quality.
This article has been viewed 29,472 times.
This wikiHow teaches you how to set up your computer to boot from an external drive instead of the built-in hard drive. This is useful when you need to run another operating system (such as Linux) or install a tool that requires the internal hard drive to stop working.
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