On 8 Dec 2006 07:03:27 -0800, in bit.listserv.ibm-main
(Message-ID:<[EMAIL PROTECTED]>)
[EMAIL PROTECTED] (Bruce Black) wrote:
One solution I have heard used is to start writing at
EOT,
and then power down the drive before it has a chance to
write
the special EOT mark. A similar system may work on other
drives, but it risks some of the data after the EOT.
Even if that was feasible for m/f tapes, the OP just
reinitialized the tapes with IEHINITT. It would be
doubtful that he could power down in the tiny interval
between writiing the tape labels and TMs, and the EOT mark.
What "tiny interval"? Open that freshly INITted tape
for output, write one short block, and WTO and
WAIT. Plenty of time to do anything you want. If you can
unmount the tape (possibly after a power-off of the drive),
you have a tape with a good tape label, no double (or even
single) tape marks after the "garbage" record you wrote,
and no EOT until the end of the data you'd like to
read. If you can figure out how many blocks you've lost at
the beginning of the tape, you might be able to write that
many and possibly still have HSM's positioning correct.
--
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