How do i fix FAT32

neal grant 0 Reputation points
2026-09-10T00:38:23.5866667+00:00

Type: EFI system partition. File system: FAT32. Status: Full repair needed. What do i do?

Windows for home | Windows 11 | Files, folders, and storage
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  1. Ivan B 125.1K Reputation points Independent Advisor
    2026-09-10T01:20:50.2366667+00:00

    Hi,

    Could you provide more details? Are you trying to fix the WinRE partition or the boot process?

    Thanks.

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  2. S.Sengupta 32,911 Reputation points MVP Volunteer Moderator
    2026-09-10T01:24:30.5566667+00:00

    Open an elevated Command Prompt (Run as Administrator) and type mountvol X: /s to temporarily mount the EFI partition as drive X. Then open File Explorer and check X: — the EFI partition is usually only 100-500MB, and it can fill up from leftover boot entries after multiple Windows updates or dual-boot setups

    Run chkdsk X: /f to fix file system errors.

    If it's full, carefully remove only clearly stale/duplicate boot folders inside \EFI\ — never guess.

    If problems persist, boot from Windows install media and rebuild the boot files with bootrec /fixboot and bcdboot.

    Unmount with mountvol X: /d when finished.

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