u/Dry-Budget970

I’m trying to shrink my Windows 11 C: partition for a Debian dual boot, but GParted/ntfsresize refuses with:

extra cluster in $Bitmap
Filesystem check failed! Totally 63 cluster accounting mismatches.
ERROR: NTFS is inconsistent. Run chkdsk /f on Windows then reboot it TWICE!

I already tried:

• chkdsk C: /f
• chkdsk C: /f /r
• disabling Fast Startup
• powercfg /h off
• full shutdown with shutdown /s /t 0
• GParted Live USB in UEFI mode
• shrinking by both 50 GiB and 40 GiB

Disk layout is UEFI/GPT:

• EFI 260 MiB
• MSR 16 MiB
• Windows C: NTFS ~475 GiB
• Recovery 975 MiB

Windows boots normally and Disk Management says the volume is healthy, but ntfsresize --check /dev/nvme0n1p3 still reports $Bitmap cluster accounting mismatches.

Is there a Windows-side way to repair this NTFS $Bitmap inconsistency, or should I stop trying and image/reinstall/restore instead?

I’m trying to shrink my Windows 11 C: partition for a Debian dual boot, but GParted/ntfsresize refuses with:

extra cluster in $Bitmap
Filesystem check failed! Totally 63 cluster accounting mismatches.
ERROR: NTFS is inconsistent. Run chkdsk /f on Windows then reboot it TWICE!

I already tried:

• chkdsk C: /f
• chkdsk C: /f /r
• disabling Fast Startup
• powercfg /h off
• full shutdown with shutdown /s /t 0
• GParted Live USB in UEFI mode
• shrinking by both 50 GiB and 40 GiB

Disk layout is UEFI/GPT:

• EFI 260 MiB
• MSR 16 MiB
• Windows C: NTFS ~475 GiB
• Recovery 975 MiB

Windows boots normally and Disk Management says the volume is healthy, but ntfsresize --check /dev/nvme0n1p3 still reports $Bitmap cluster accounting mismatches.

Is there a Windows-side way to repair this NTFS $Bitmap inconsistency, or should I stop trying and image/reinstall/restore instead?