hutch@sdcsvax.UCSD.EDU (Jim Hutchison) (12/06/86)
/*
No matter what the utility, if your driver has a block interface you
can do block forwarding. If it also has a sector interface, you are
probably better off just doing sector forwarding.
The idea with bad chunk forwarding is that no one above the driver level
need know about it. If DiskCopy or FORMAT or NibbleCopy says grab track
#4, give them whatever track #4 maps to (hopefully 4, unless you have
yellow disks :-).
More important to the discussion is, where are the bad track tables supposed
to hide on disk. If the answer is nowhere, then you can't get that service.
On floppies this seems to be a bad idea in past experience. If it is starting
to go bad, it will generally get worse all to soon (repeatedly). For a hard
disk this is important, as they all have media defects (small disks 1 or 2,
larger disks 5-10, huge disks 10+).
*/
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Jim Hutchison UUCP: {dcdwest,ucbvax}!sdcsvax!hutch
ARPA: Hutch@sdcsvax.ucsd.edu
"Yes, yes, ofcourse I disclaim everything. No,no that is not my tape..."