[Udpcast] What happens when disks are not exactly the same?

[Donald Teed]

Our notebook supplier says they cannot provide the exact
same model of disk in all units of a fairly large order.

Assuming that most data will be packed in the beginning of
the drive (we use Ghost on the template development machine,
which should be doing a defrag as it makes its image),
how can there be any data loss if there is a small difference
in size between two models of drive?

The alternate paranoid approach is to make an image file
for every model of drive involved.  If there is no real
need to do that, we'd like to avoid the extra efforts
involved in making a new image file each time a new 
model of drive is encountered.

--Donald Teed