[CentOS] sfdisk -l output errors and crc erros

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OK, I'm still trying to solve this.  Though the server has been up rock
steady, but the errors concern me.  I built this on a test box months ago
and now that I am thinking, I may have built it originally on a drive of a
different manufacturer, although about the same size (20g).  This may have
something to do with it.  What is the easiest way to get these errors
taken care of?  I've tried e2fsck, and also ran fsck on Vol00.  Looks like
I made a fine mess of things.  Is there I wasy to fix it without reloading
Centos?  Here are some outputs:


snapshot from /var/log/messages:

Jul 12 04:03:21 hostname kernel: hda: dma_intr: status=0x51 { DriveReady
SeekComplete Error }
Jul 12 04:03:21 hostname kernel: hda: dma_intr: error=0x84 {
DriveStatusError BadCRC }
Jul 12 04:03:21 hostname kernel: ide: failed opcode was: unknown


sfdisk -l:

Disk /dev/hda: 39870 cylinders, 16 heads, 63 sectors/track
Warning: The partition table looks like it was made
  for C/H/S=*/255/63 (instead of 39870/16/63).
For this listing I'll assume that geometry.
Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0

   Device Boot Start     End   #cyls    #blocks   Id  System
/dev/hda1   *      0+     12      13-    104391   83  Linux
/dev/hda2         13    2500    2488   19984860   8e  Linux LVM
/dev/hda3          0       -       0          0    0  Empty
/dev/hda4          0       -       0          0    0  Empty
Warning: start=63 - this looks like a partition rather than
the entire disk. Using fdisk on it is probably meaningless.
[Use the --force option if you really want this]


sfdisk -lf

Disk /dev/hda: 39870 cylinders, 16 heads, 63 sectors/track
Warning: The partition table looks like it was made
  for C/H/S=*/255/63 (instead of 39870/16/63).
For this listing I'll assume that geometry.
Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0

   Device Boot Start     End   #cyls    #blocks   Id  System
/dev/hda1   *      0+     12      13-    104391   83  Linux
/dev/hda2         13    2500    2488   19984860   8e  Linux LVM
/dev/hda3          0       -       0          0    0  Empty
/dev/hda4          0       -       0          0    0  Empty

Disk /dev/hda1: 207 cylinders, 16 heads, 63 sectors/track

sfdisk: ERROR: sector 0 does not have an msdos signature
 /dev/hda1: unrecognized partition
No partitions found

Disk /dev/hda2: 39652 cylinders, 16 heads, 63 sectors/track

sfdisk: ERROR: sector 0 does not have an msdos signature
 /dev/hda2: unrecognized partition
No partitions found
Disk /dev/dm-0: cannot get geometry

Disk /dev/dm-0: 0 cylinders, 0 heads, 0 sectors/track

sfdisk: ERROR: sector 0 does not have an msdos signature
 /dev/dm-0: unrecognized partition
No partitions found
Disk /dev/dm-1: cannot get geometry

Disk /dev/dm-1: 0 cylinders, 0 heads, 0 sectors/track

sfdisk: ERROR: sector 0 does not have an msdos signature
 /dev/dm-1: unrecognized partition
No partitions found

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