Re: cluster size=0

[Alan Young <ayoung teleport com>]

Norton DiskDoctor might fix it too.

If you don't have Norton Utilites, you can download a 30 day trial version
from Symantec.  Go to http://www.symantec.com/nu/nu_9x/ .  You'll need a
Windows box to install it.

Best of Luck,
Alan

Paul Bunn wrote:
> 
> Mysterious.
> 
> If you use DISKEDIT from the Norton tools, or your favorite disk-sector editor,
> you can load the boot-sector from the drive.  For partition 1 this means that you
> need to load sector 0/1/1 (usually LBA 63 or 255 depending on
> geometry/translation).  You will find the cluster-size set at offset 0x0d in that
> sector, and it is defined as number of sectors per cluster and the value must be a
> power of 2:  1, 2, 4, 8 etc.
> DISKEDIT should let you view the data as a FAT boot-sector (FAT32 is a superset of
> the FAT data) so you can review the other values too.
> 
> Regards,
> 
> Paul Bunn, UltraBac.com, 425-644-6000
> Microsoft MVP - WindowsNT/2000
> http://www.ultrabac.com
> 
> 
> -----Original Message-----
> From: James Fowler [mailto:santiago@cx908962-l.mesa1.az.home.com]
> Sent: Saturday, March 24, 2001 3:31 AM
> To: axp-list@redhat.com
> Subject: OT: cluster size=0
> 
> Sorry for the OT, but I am really stumped on this one.  I was attempting
> to back up a win95 FAT32 partition by doing a 'tar -cvf' on it and storing
> the tar file on another disk.  I had some problems as the tar file would
> exceed 2GB and then tar would die telling me that the archive was too big
> to continue (even though there was 15GB still available on the device
> where the archive was being written).  [I figure that the 2GB things was
> due to the fact that it was a 2.2.14 kernel that must not have supported a
> file size above 2GB. This seems less important right now.]
> Some how the cluster size on the FAT32 parition got changed to 0.  The
> partition is still intact.  I haven't changed the parition type, formated,
> reformated or any of the above. Nothing has been written to the partition
> and the parition itself still shows to be intact.  I can even boot from
> the drive (using lilo on the MBR) as long as I don't boot from that
> parition (partition 1, on my machine /dev/hda1 occupying sec 1-511).
> Roughly a 4GB partition.
> 
> How do I get the cluster size set back to what it was (the standard
> win95 FAT32 size) or alternatively, get the data off of that partition.  I
> haven't had any luck attempting to mount it under linux.  I have tried
> dosfsck, fsck.vfat/fsck.msdos, partition magic 4.0, revival, PQDI, Norton
> Disk Doctor (old Dos version).  I haven't allowed anything to write to the
> disk.  I have only attempted reads.  The data is important or I would just
> back up the rest of the disk and repartition it.
> 
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