[8151] in Hotline Meeting
Re: portnoy
daemon@ATHENA.MIT.EDU (John Carr)
Fri Mar 13 14:54:02 1992
To: Black Dragon <tlyu@Athena.MIT.EDU>
Cc: hotline@Athena.MIT.EDU
In-Reply-To: Your message of "Fri, 13 Mar 92 01:52:54 EST."
Date: Fri, 13 Mar 92 14:53:23 EST
From: John Carr <jfc@Athena.MIT.EDU>
How to fix this yourself if you can't wait for hotline:
Method A (short term fix)
run:
# dd if=/vmunix of=/dev/rhd0b bs=512 count=1 seek=8719
# dd if=/vmunix of=/dev/rhd0b bs=512 count=1 seek=24421
This should fix the problem. Verify by running
# dd if=/dev/rhd0b of=/dev/null bs=64k
If it gets an error, go to the next step. Otherwise reboot.
"DATA-CRC-ERROR" means the CRC checksum on the disk is bad. This is
caused by bitrot or failing disk media. Writing a new block writes a
good checksum.
Method B (longer term fix)
The long term fix is to run standalone format. Since the bad blocks
are on the swap partition this should not result in data loss.
