corrupt dump file

[Walter Wong]

A 70 meg dump file that I made to disk is corrupt after restoring
about 19 meg.  The following is what happens:

	Script started on Sat Nov 10 22:01:57 1990

		elara.esl.acs.cmu.edu# restore xf /usr/u.d
		partial block read: 5068 should be 10240
		abort? [yn] n
		File read error while trying to resyncronize
		continue? [yn] y
		continuation failed: Bad file number
		elara.esl.acs.cmu.edu# exit

	script done on Sat Nov 10 22:07:41 1990


The hardware configuration is as follows (if it matters). A DECstation
3100, 16 meg memory, dumping from an internal RZ23 to a Wren VI.

Are there any utilities that can try to recover the rest of the dump
file? 

Please mail me directly.  I can summarize if there is interest.

Thanks,

Walter

ps. I know the format of the dump file is documented in dump(5) but is
there any easier way than to write a small program to add in an extra
5172 characters at the right place?

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internet:Walter.Wong at andrew.cmu.edu		bitnet:r746ww0r at cmccvb