chkdsk: 'NtOpenFile() failed' then 'P-DIE! (sdk/lib/fslib/vfatlib/check/io.c:471) closing filesystem'

QEMU 0.9.1

0. Default install.
1. cmd > chkdsk.
1r. Fails.

–

reactos-bootcd-0.4.13-dev-1225-ge413df4-x86-gcc-lin-dbg {LastBeforeReleaseBranch}
reactos-bootcd-0.4.14-dev-1562-g4d2d2db-x86-gcc-lin-dbg [Stage 2 'Assertion failed: !IsSessionAddress'. (See my CORE-14601 comment.)] {LastBeforeReleaseBranch}
reactos-bootcd-0.4.15-dev-1723-g774a4c7-x86-gcc-lin-dbg
Works fine.

(dll/win32/fmifs/chkdsk.c:44) Warning: use GetVolumeNameForVolumeMountPointW() instead!

(sdk/lib/fslib/vfatlib/vfatlib.c:354) VfatPrint -- 0x41: (sdk/lib/fslib/vfatlib/vfatlib.c:354) VfatPrint -- Dirty bit is set. Fs was

 not properly unmounted and some data may be corrupt.

(sdk/lib/fslib/vfatlib/vfatlib.c:354) VfatPrint -- There are differences between boot sector and its backup.

(sdk/lib/fslib/vfatlib/vfatlib.c:354) VfatPrint -- This is mostly harmless. Differences: (offset:original/backup)

  (sdk/lib/fslib/vfatlib/vfatlib.c:354) VfatPrint -- 65:01/00(sdk/lib/fslib/vfatlib/vfatlib.c:354) VfatPrint --

(sdk/lib/fslib/vfatlib/vfatlib.c:354) VfatPrint --   Not automatically fixing this.

(sdk/lib/fslib/vfatlib/vfatlib.c:354) VfatPrint -- Starting check/repair pass.

(sdk/lib/fslib/vfatlib/vfatlib.c:354) VfatPrint -- Starting verification pass.

(sdk/lib/fslib/vfatlib/vfatlib.c:354) VfatPrint -- \??\C:: 1612 files, 114947/131028 clusters

–

reactos-bootcd-0.4.15-dev-1724-gc05f3d8-x86-gcc-lin-dbg [Stage 1 broken (setup dir)] {Switch to MS FastFAT}
reactos-bootcd-0.4.15-dev-1725-g91edefa-x86-gcc-lin-dbg [Stage 1 broken (assertion)]
reactos-bootcd-0.4.15-dev-1726-g7dab358-x86-gcc-lin-dbg [Stage 1 broken (assertion)]
reactos-bootcd-0.4.15-dev-1727-g36e18aa-x86-gcc-lin-dbg [Stage 1 broken (assertion)]
reactos-bootcd-0.4.15-dev-1728-g7f47f03-x86-gcc-lin-dbg [Stage 1 broken (assertion)]
reactos-bootcd-0.4.15-dev-1729-gc295d6b-x86-gcc-lin-dbg [Stage 2 broken (Disk error)]
reactos-bootcd-0.4.15-dev-1730-gc74cbf0-x86-gcc-lin-dbg [Stage 2 broken (Disk error)]
reactos-bootcd-0.4.15-dev-1731-g70c62aa-x86-gcc-lin-dbg [Stage 2 broken (Disk error)]
reactos-bootcd-0.4.15-dev-1732-gd2fa434-x86-gcc-lin-dbg [Stage 2 broken (Disk error)]
reactos-bootcd-0.4.15-dev-1733-g76ac898-x86-gcc-lin-dbg [Stage 2 broken (Disk error)]
reactos-bootcd-0.4.15-dev-1734-g7d70af6-x86-gcc-lin-dbg [Stage 2 broken (Disk error)]

–

reactos-bootcd-0.4.15-dev-1735-gf114209-x86-gcc-lin-dbg
reactos-bootcd-0.4.15-dev-1738-g2d3454a-x86-gcc-lin-dbg
reactos-bootcd-0.4.15-dev-5113-g29d1938-x86-gcc-lin-dbg
reactos-bootcd-0.4.15-dev-5122-g72bdbdd-x86-gcc-lin-dbg
Regressed.

(dll/win32/fmifs/chkdsk.c:45) Warning: use GetVolumeNameForVolumeMountPointW() instead!

(sdk/lib/fslib/vfatlib/check/io.c:193) NtOpenFile() failed with status 0xc0000043

(sdk/lib/fslib/vfatlib/check/common.c:83) Unrecoverable problem!

(sdk/lib/fslib/vfatlib/vfatlib.c:353) VfatPrint -- P-DIE! (sdk/lib/fslib/vfatlib/check/io.c:471) closing filesystem