Stop EFI partition from USB drive having a letter assigned?


  1. unko
    Posts : 173
    Windows 10 x64
       New #1

    Stop EFI partition from USB drive having a letter assigned?


    Hello, when i plugin my USB drive which has some EFI partition on it, Windows 10 automatically assign it a letter which is annoying as you guess (can't access, being asked to format, etc..); how do i stop this from happening? Neither in diskpart, neither with 3rd party apps i could prevent that from happening.. ;/
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  3. Caledon Ken
    Posts : 30,187
    Windows 11 Pro x64 Version 23H2
       New #2

    Hi unko.

    Can we ask what you use the EFI partition for?
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  4. Berton
    Posts : 14,018
    Win10 Pro and Home, Win11 Pro and Home, Win7, Linux Mint
       New #3

    And what kind of USB drive? Thumb drives generally come formatted as FAT32, USB HDDs can be one of several formats, usually NTFS but my latest 4TB drives are exFAT.
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