Windows 10: Is it possible to boot Windows from an external hard disk?

My buddy recently bought a new PC and needs help installing Windows. Since my 8gb USB stick is broken, I can't use it anymore. Is it also possible with an external hard drive?
And is it enough to use the free tool from Microsoft?

:)

 

Seagate External Hard Drive

Hi Barbara,

Hardware failure or corruption within your system files are some of the possible reasons why you are experiencing an issue with accessing your external hard drive. For us to provide an accurate solution, we would need you to answer the following questions:

• Which build, version and edition of Windows 10?
• Are you experiencing the same issue when you are trying to access the external hard drive using another PC?
• What troubleshooting steps have you done so far?

In the meantime, we suggest running the automated troubleshooter for hardware. Follow these steps to do so:

• Open the Control Panel.
• Using the search box at the upper right corner of the window, type troubleshooting.
  
• From the search results, click on Troubleshooting.
• Click on Hardware and Sound and then choose Hardware and Devices.
• Once done, restart your computer and then check if the same issue persists.

We are looking forward to your response.

 

External Hard Drive

Hi John,

We suggest that you try the troubleshooting steps below:

• Open your External Hard Drive file in File Explorer.
• Type the name of the file you want to search on the search box and click Enter.

The file will show up in Search Results and you will be able to move it to the correct folder.

Let us know if you need further help.

 

Help with external hard drive

Hi Debbra,

Welcome to Microsoft Community.

I appreciate your interest in windows 10 and also for trying the troubleshooting steps to fix the issue. I understand the inconvenience you faced. I will certainly help you with this.

I would suggest you to plug in hard drive then check in disk management you can see the drive or not.

Follow the steps to check Drive in Disk Management.

• 
  Go to the Control Panel then click on the
  Administrative Tools. .
  
• 
  Under the Administrative Tool Click on Computer Management.
  
• 
  Click on Disk Management and check the External Hard Drive.
  

Also check in BIOS whether External Hard Drive is listed or not.

For help with the BIOS settings, refer to the computer manual or contact the manufacturer.

If it doesn’t work then, I would suggest you to update BIOS for updating BIOS contact Lenovo Support.

Follow the link:

http://support.lenovo.com/in/hi/

Disclaimer :

Modifying BIOS/complementary metal oxide semiconductor (CMOS) settings incorrectly can cause serious problems that may prevent your computer from booting properly. Microsoft cannot guarantee that any problems resulting from the configuring of BIOS/CMOS settings
can be solved. Modifications of the settings are at your own risk.

Hope this information is helpful. Please do let us know if you need further assistance, we’ll be glad to assist you.

Thanks.