From: Yousuf Khan on
Arno wrote:
> If you really want to make both drives the same size, the
> only way I see is to format them and then put all files
> on both using exactly the same procedure. This may still
> not work, as the metadata is always slightly different,
> for example in the timestamps.

Something like a RAID-based mirroring system which copies data at a much
lower level than the filesystem.

Yousuf Khan