Mounting problem

[Stephen Liu]

Hi Andreas,

Tks for your advice.

- snip -
> I'm
> not sure where that would come from.  Please attach output from:
> 
> 	dd if=/dev/hda8 bs=4k count=1 | gzip -9 > /tmp/hda8-sb.gz

# dd if=/dev/hda8 bs=4k count=1 | gzip -9 > /tmp/hda8-sb.gz
1+0 records in
1+0 records out
4096 bytes transferred in 0.016240 seconds (252216 bytes/sec)

- snip -

> For smaller filesystems (< 512MB) it is
> 8193 or 24576 or 8192 * {3,5,7}^n + 1.  For larger filesystems
> it is
> 32768 or 98304 or 32768 * {3,5,7}^n by default.

This partition is about 5~6G, if I recall correctly.  Which number
shall I use to test.  

Besides do I need to backup this partition before test?  Partition
/dev/hda7 has about 5.6G space available.
# mount /mnt/hda7
# df -hT /mnt/hda7
Filesystem    Type    Size  Used Avail Use% Mounted on
/UNIONFS/dev/hda7
              ext3    5.6G   33M  5.3G   1% /mnt/hda7

Would running
# dd if=/dev/hda8 of=/dev/hda7

backup its content to /dev/hda7.  Please advise.  TIA

Remark: there are several non-important working files on /dev/hda7.  To
overwrite them has no problem.  The data on /dev/hda8 is about 900MB

B.R.
SL