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Corrupted Partition Info

Last response: in Storage
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June 2, 2004 12:17:18 PM

Archived from groups: comp.sys.ibm.pc.hardware.storage (More info?)

Somehow my 2nd harddrive became corrupted. I've scanned all my files
with various antivirus programs and nothing seems to be infected, so I
have no idea how this happened.

Basically the MBR and parition table got screwed up. In fact, my 1st
HDD's partition table somehow seemed to end up on the 2nd HDD.

Prior to this, my 2nd HDD contained 2 partitions, both Logical
partitions in an Extended partitions.

Using Active@ Partition Recovery, I've managed to make my partitions
visible again, but they are now primary partitions. Ideally, I'd like
to convert these back to extended partitions as easily as possible,
but I suspect the safest method will be to copy the data onto the 1st
HDD and reformat the 2nd HDD, and then copy the data back.

Only problem with this is that I don't have enough room on the 1st HDD
to copy everything from the 2nd HDD, although there's enough space to
copy the important stuff. So what I'd like to do is backup the vital
data, and then try and convert the partitions, keeping the data
intact.

So, if anyone knows a way to convert the primary partitions on the 2nd
HDD to logical partitions, please tell me.

At the moment, Active@ Partition Recovery shows the following for the
2nd HDD:

Unallocated Drives first sector: 63
Total number of sectors: 16065
Size: 7.84Mb

Logical D: Drive's first sector: 16128
Total number of sectors: 4192902
Size: 1.99 Gb

File system: FAT16 (BIG LBA)

BOOT info: OEM identifier: MSWIN4.0
Bytes per sector: 512
Sectors per cluster: 64
Reserved sectors: 8
Number of FATs: 2
Root entries: 512
Sectors per one FAT: 256
Sectors per track: 63
Number of heads: 255
Hidden sectors: 63
Number of sectors: 4192902
Serial number: 3FB4-E02D
Volume label:
System ID: FAT16


Unallocated Drive's first sector: 4209030
Total number of sectors: 63
Size: 31.5 Kb

Logical E: Drive's first sector: 4209093
Total number of sectors: 152087292
Size: 72.5 Gb

File system: FAT32 (LBA)

BOOT info: OEM identifier: MSWIN4.1
Bytes per sector: 512
Sectors per cluster: 64
Reserved sectors: 36
Number of FATs: 2
Root entries: not used
Sectors per one FAT: 18562
Sectors per track: not used
Number of heads: 255
Hidden sectors: 4209093
Number of sectors: 152087292
Serial number: 7F69-C05E
Volume label: OTHER
System ID: FAT32
June 3, 2004 10:34:43 AM

Archived from groups: comp.sys.ibm.pc.hardware.storage (More info?)

The good news is I've managed to convert my partitions back to
Extended partitions with Partition Magic 8, with no data loss.

If anyone can enlighten me as to how my 2nd HDD ended up with my 1st
HDD's partition table, I'd be delighted to know. The obvious answer is
'virus', but I've thoroughly scanned my files and there's not even the
hint of one.

On Wed, 02 Jun 2004 08:17:18 GMT, Doughboy <anon@invalid.com> wrote:

>Somehow my 2nd harddrive became corrupted. I've scanned all my files
>with various antivirus programs and nothing seems to be infected, so I
>have no idea how this happened.
>
>Basically the MBR and parition table got screwed up. In fact, my 1st
>HDD's partition table somehow seemed to end up on the 2nd HDD.
!