Re: making a boot disk on iigs

[Jeff Blakeney <CUTjblakeney@sympatico.ca>]

On 17 Feb 2004 00:06:44 GMT, mjmahon@aol.com (Michael J. Mahon) wrote:

>ProSel's Volume Copy utility, for example, only writes the blocks
>which are marked in use in the bit map.  Since deleting files does
>not zero their content, but does free their bitmap bits, this is a
>much more effective way to copy/backup a ProDOS volume,
>or any file system that keeps track of free space--which should
>be all of them.  ;-)

That's very cool.  I never knew that and it does make sense.  I wonder
why it never occurred to me before.  :-)

[snip]
>A better approach would be to prompt the user with the recognized
>file system (if it is recognizable) and allow the user to override the
>assumption if it is known to be incorrect.

Yes, you'd want to have to option.  There are some copy protection
schemes that don't store data in normal files, they just put it into
blocks or sectors on the disk with no directory entry.  It is possible
that these blocks or sectors are still getting marked as being used in
the block or sector table but it would be nice to have the option to
just copy everything instead of just the stuff marked as being used.

-- 
 Jeff Blakeney - Dean of the Apple II University in the
                 Apple II Community on Syndicomm.com
 CUT the obvious from my address if you want to e-mail me