Need HELP recovering files from tar damage

[Carl Lowenstein]

In article <11668 at orstcs.CS.ORST.EDU> pvo at oce.orst.edu (Paul V O'Neill) writes:

>Keep in mind that if you made the c/x error while at BOT, or anywhere on
>track 1 of a QIC tape, that the drive turned on it's FULL WIDTH erase head
>as it was writing to track 1 and also wiped anything you had further on
>down the line in tracks 2 - 9.

Do these QIC cartridges not have some kind of mechanical write lock that
signals to the drive electronics?  One could save a great deal of grief
by exercising the write lock, assuming that it really works.
Maybe that's the only good feature of the DEC TK50 cartridge, the write-lock
mechanism out front where it can be switched over.  Much easier than the
write-enable ring on a standard 9-track tape.
-- 
	carl lowenstein		marine physical lab	u.c. san diego
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