In article <
200704061031.35239.mark@phillipsmarketing.biz> you write:
> Could someone help me verify that the entire hard drive was copied?
>
> This is the message at the end of the copying:
>
> 29302560+0 records in
> 29302560+0 records out
> 30005821440 bytes (30 GB) copied, 6036.72 seconds, 5.0 MB/s
> 16656403+379 records in
> 16656403+379 records out
> 17056356977 bytes (17 GB) copied, 6036.63 seconds, 2.8 MB/s
>
> The resulting image is only 16GB for a 30 GB drive. I know I used compression,
> but I just want to make sure it worked. It does say 30Gb copied.
That looks right. 50% compression by gzip seems reasonable.
> Just looking for some comfort before I wipe out this drive!
If you're paranoid, you could do something like "sum /dev/hda" on the
laptop and then "gunzip <backupfile | sum" on the system containing
the backup file. The checksums reported by both commands should be
identical. NOTE: This will not work if you have modified /dev/hda
in *any* way (including mounting one of the partitions) between the
backup and running sum.
-Dale Farnsworth
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