OT: paging MAC expert(s) --- What's a Performa?

From: Christopher Smith <csmith_at_amdocs.com>
Date: Tue Nov 20 11:07:06 2001

> -----Original Message-----
> From: Richard Erlacher [mailto:edick_at_idcomm.com]

> medium, and subsequently writing them back to a physically
> identical (not just
> logically identical) target, without consideration for

Why not just logically identical, then? ... assuming, of course, the same
o/s would handle devices which are logically identical in an identical
manner. (This may not be a safe assumption)

[snip]

> The bitwise image transfer from disk=>tape can be done
> without knowledge of
> either the compression scheme or of the OS/file system used
> on it. It does
> require, however, that the entire image be recorded so it can
> be restored in its
> entirety. The result is that you can use a different OS to
> do that task though
> it's not required, and the penalty is that you have no access
> to the file data,
> though you could, I guess, go to the trouble of deciphering
> the bitwise image
> into a logical file system if one originally existed. You
> can do that under any
> circumstances, but it's a lot of trouble and requires you
> know a great deal
> about the low-level processes of converting the data on the
> orginal drive into
> the files comprising it.

I think you've just summed up my previous point. That being, of course,
that if you can record a bit-by-bit image, you should also be able to
interpret this image (with quite a bit of extra work), and find the
component files. In fact, I'd add that depending on the amount of extra
work you're willing to do, you can likely restore the image in a "logical"
fashion to a volume that is completely different from the one on which it
originally resided.

Regards,

Chris



Christopher Smith, Perl Developer
Amdocs - Champaign, IL

/usr/bin/perl -e '
print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n");
'
 
Received on Tue Nov 20 2001 - 11:07:06 GMT