This is the EFI system partition (ESP). You must not delete it or your system will no longer boot, requiring boot repairs. Luckily, Windows prevents you from modifying this partition if everything is working correctly.
Usually the ESP is not assigned a drive letter on Windows. How it got one on your system, who knows. First, you should try rebooting.
Then, you may also try mountvol e: /d
from Command Prompt or PowerShell, both as Admin and without.
Lastly, you can also try with diskpart
, though I’ve never seen that work.
- Run
diskpart
(it’s a command-line tool)
- Use
list volume
to find the FAT32 ESP, you need the number
- Use
select volume X
where X
is the number you found
- Use
remove letter=e
There’s also the possibility of using the registry, but we won’t look at that unless absolutely necessary.
DiskPart
→Lis Vol
in a code box within your question. If that EFI partition is the only one, you cannot delete it, but if it's a secondary EFI partition, it's safe to delete only after verifying which EFI partition is actively being used, usually done viaDiskPart
. If you're using EFI boot, the EFI partition should not be listed asSystem, Active
in Disk Management (it should be listed asEFI System Partition
) - that's usually the details of a BIOS MBR boot partition.