10.15 We made some changes in our SYSSTART file and now when we reboot, none of the commands in the file execute. We even backed out the changes and still, nothing is executed. What could be wrong?
SYSSTART.PUB.SYS must be created by MANAGER.SYS. It also should be on LDEV1.
The "STARTUP" line must be the first line in the file. It is possible to boot the machine at the ISL prompt and specify that the SYSSTART file should not be used, with the NOSYSSTART directive. That is not likely what happened it this case, but it is handy when doing patches.
The SYSSTART file can have multiple sections for options such as WARMSTART, COOLSTART, COLDSTART. The sysstart option that is executed depends on the boot method for the machine.
The ISL start options map to the following SYSSTART sections:
"STARTUO" Always executed.
"WARMSTART" Only on START RECOVERY
"COOLSTART" On START NORECOVERY
"COLDSTART" On UPDATE
"RELOAD" On INSTALL, this assumes that the SLT has the SYSSTART written on the tape.