Problem w/ B/1

[evins at NRL-RADAR.ARPA]

	We have a VAX 11/750 running 4.2 BSD [BRL] UNIX, with two RA81
disks.  The problem is that when doing a B/1, the system does not boot
into single user mode.  Instead, when it should enter single user mode,
it simply sits there.  I will then hit a <CR> and it will procede to
invoke /etcrc and go through the fsck disk checks.

	When I first took charge of this system, it seemed to correctly
using B/1 once.  The next time I booted the system, it immediately
invoked /etc/rc, and fsck found problems with ra0a:

	INCORRECT BLOCK COUNT I=33 (2 should be 0) (CORRECTED)
	1 BLK(S) MISSING
	BAD CYLINDER GROUPS (SALVAGED)

It then procedded to reboot itself, and just before invoking /etc/rc,
it just sat there, until I hit a <CR>.  I do notice that I had not run
'sync' before the second reboot that I mention.  This is when the
problem started.

	My question is: could fsck have damaged the boot block in an
attempt to fix something, possibly because I did not run 'sync'?  Or,
could this be some other problem?

Thanks.
	-Jim Evins