.tr }.
.SC UNIX~SYSTEM~RECOVERY~PROCEDURES September~14~1977
.HU "AFTER ALL SYSTEM CRASHES"
.L1
Note all error indications, hardware or software:
.P
for example;
.L2
CPU looping or halted.
.L2
Power on?
.L2
Error messages on console.
.L2
RP04 
.I "DISK UNSAFE" }
.L1
Shutdown the System to all users.
.L2
Halt System, by pressing 
.I halt
switch down.
.L2
Busy out (push buttons in) dial up lines for that system (check labels on 
.I data-set
consoles).
.L1
Attempt System Core Dump Procedure.
.L2
Make sure the
.I KEY
is in the
.I POWER
position (not
.I LOCK )
.L2
Mount dump tape with write-ring on the tape drive.
Make sure the tape is
.I ONLINE
and ready at
.I "load point" }
.L2
Depress
.I START }
.L2
Set
044\*o \*a
.I CSW }
.L2
Depress
.I "LOAD ADDRESS"
switch down.
.L2
Set
.I ENABL/HALT
switch up.
.L2
Depress
.I START
(dump will be written to tape).
.L2
When dump tape has rewound,
unmount dump tape; remove write-ring; and label the tape with 
the following information:
.L3
"CORE DUMP"
.L3
date
.L3
time
.L3
System
.L3
Console messages (e.g., KA6 #, APS #, and trap type).
.L1
Reboot system
.I SINGLE-USER ,
via ROM BOOT PROCEDURE.
.L1
Do a 
.I CHECK
of the filesystems, via
.B check }
.BS
.BI
# 
.UL "check"
.BE
.L1
Perform FILE PATCHING PROCEDURE.
.L1
Reboot the system for `MULTI-USER' (via either the
.I "ROM BOOT"
Procedure or changing the console switches to
any other value other than the previous setting,
followed by typing a ``CTRL/d'').
.L1
Bring up
.I UNIX
via UNIX INITIALIZATION PROCEDURE.
.L1
Record downtime in SYSTEM DOWN LOG.
