Hard Drive Partition Errors

  dublincity 09:35 09 Jan 2006
Locked

Using Parition Magic, I've made errors in organising the 5 or 6 partitions on my first internal hard drive. They relate to faulty ‘Disk Geometry’ with (I think) the partitions beginning and ending at the wrong ‘cylinder number’ points. The net result is that some of my diagnostic programs describe this Disk 1 (or Disk 0) as ‘Bad’ or ‘Unreadable’. A couple of programs mis-read some of the partitions as being of size 600 GB. This means, as far as I know, that I can no longer make any changes to it although I have the option to make it Active.

The good news is that other programs describe all the partitions as ‘Healthy’ and I can still easily boot into – and use – the two OS’s and nothing has been lost. [A third OS is on a second drive and that, too, is bootable.]
The data below were given (a) onto a floppy that I was asked to insert and (b) from PM's 'PartitionInfo' tool.

Has anybody any idea what I might do next? Many Thanks.

0012F174: 00000017 001C9670 00004180 00130000
0012F184: 0012F103 7C928ECA 7C911596 7C9106EB
0012F194: 0080C180 001C9648 001C9670 7C911596
0012F1A4: 7C9106EB 00000000 001C9648 00000000
0012F1B4: 0080C175 001C4008 00000000 7C9106EB
0012F1C4: 00000003 001C9470 00000002 00130188
0012F1D4: 0012F5F9 0012F5DC 001C9440 0012F700
0012F1E4: 00000A29 00000020 00000041 00130608
0012F1F4: 7C91056D 0012F2DC 001C9440 00000000
0012F204: 7C9106EB 001BDFF8 00130640 00000000

Error #107: Partition begins after end of disk.
ucBeginCylinder (127437) must be less than 7476.
Error #109: Partition ends after end of disk.
ucEndCylinder (242710) must be less than 7476.
Error #107: Partition begins after end of disk.
ucBeginCylinder (89725) must be less than 7476.
Error #109: Partition ends after end of disk.
ucEndCylinder (123274) must be less than 7476.
Error #107: Partition begins after end of disk.
ucBeginCylinder (40475) must be less than 7476.
Error #109: Partition ends after end of disk.
ucEndCylinder (127519) must be less than 7476.
Error #107: Partition begins after end of disk.
ucBeginCylinder (93736) must be less than 7476.
Error #109: Partition ends after end of disk.
ucEndCylinder (93737) must be less than 7476.

  Chegs ®™ 09:44 09 Jan 2006

CHKDSK /R or FIXMBR or FIXBOOT might cure these errors.

  dublincity 10:37 09 Jan 2006

Thanks - I'll look into that. I've previously run CHKDSK on each of the volumes and all showed that everyhing was ok. I've used various boot managers but the grub (LILO) seems to be the only one that's foolproof. As far as I know, the MBR must be ok. Cheers.

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