Stop EFI partition from USB drive having a letter assigned?

  1. Posts : 161
    Windows 10 x64

    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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  2. Caledon Ken's Avatar
    Posts : 20,109
    Windows 10 Pro x64 Version 1909

    Hi unko.

    Can we ask what you use the EFI partition for?
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  3. Berton's Avatar
    Posts : 8,074
    Win10 Home and Pro, Win10 Insider Preview, WinXP Home Premium, Linux Mint, Win7 Pro

    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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