Windows 10 How to mount the EFI partition on USB drive from Windows 10.

  • Thread starter Thread starter Alex Ya
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Alex Ya

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My Win10 is 1709.
From screenshot, you can see that I created a EFI partition on the USB drive.
But when I ran "assign letter=z" in diskpart command, it failed with the error as following:

DISKPART> list part

Partition ### Type Size Offset
------------- ---------------- ------- -------
* Partition 1 System 300 MB 1024 KB
Partition 2 Primary 8000 MB 301 MB
Partition 3 Unknown 15 GB 8 GB
Partition 4 Primary 91 GB 23 GB

DISKPART> assign letter=z

Virtual Disk Service error:
The operation is not supported on removable media.




So, my quesiton is how to mount the EFI partition which is on a USB drive?


1487154.jpg

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