Hard drive partition appears RAW with 64bit OS, works fine with 32bit OS

IvanBo7

Reputable
Jun 4, 2015
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4,510
My 500 GB Samsung 7200RPM SATA2 HDD has 4 NTFS partitions, the biggest one is 205GB with 64.7GB free, and around 2MB of bad sectors so I have to fix it with chkdsk sometimes. But even wIth little problems, the drive is usable under a 32bit Windows XP or 7, but when I try use 64bit Windows 8.1 or 7 it appears as RAW, and chkdsk says it can't run because the disk is RAW.
Here's a copy of last chkdsk:

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\Documents and Settings\User123> chkdsk /r J:
The type of the file system is NTFS.

CHKDSK is verifying files (stage 1 of 5)...
File verification completed.
CHKDSK is verifying indexes (stage 2 of 5)...
Index verification completed.
CHKDSK is verifying security descriptors (stage 3 of 5)...
Security descriptor verification completed.
CHKDSK is verifying Usn Journal...
Usn Journal verification completed.
CHKDSK is verifying file data (stage 4 of 5)...
File data verification completed.
CHKDSK is verifying free space (stage 5 of 5)...
Free space verification is complete.
CHKDSK discovered free space marked as allocated in the volume bitmap.
Correcting errors in the Volume Bitmap.
Windows has made corrections to the file system.

215038025 KB total disk space.
146290972 KB in 289716 files.
157208 KB in 4933 indexes.
2484 KB in bad sectors.
389429 KB in use by the system.
65536 KB occupied by the log file.
68197932 KB available on disk.

4096 bytes in each allocation unit.
53759506 total allocation units on disk.
17049483 allocation units available on disk.