Change boot order on RS6000

[terrywashington]

I have an RS6000 43P Model 150 with 9GB/18GB internal disks (IDs 4 and 5) and an 18GB external disk (ID 6). It boots off the 9GB disk containing AIX 4.3. I want to boot off one of the other disks as I have been told that AIX 4.2 in also installed. When I press F1 and select the option to change the boot order only the 9GB drive is listed. The other choices are the floppy drive, tape drive and CD-ROM. I ran diag in single-user mode and the drives were listed as working normally. I am considering removing the 9GB disk to see if it will then boot off one of the others. Is there another way to boot off the other disks without opening the case?

 

[Morsing]

When you're in AIX try

# bootlist -m normal hdisk2 hdisk1 hdisk0

Cheers Henrik Morsing
IBM Certified AIX 4.3 Systems Administration

 

[bi]

You also have to do a bosboot command. However, what tDub is trying to do is have a dual boot. I'm not sure if bosboot is the command to use for that, or whether adding the 4.2.x disk to the bootlist is what you want to do.

Have you checked the IBM site for alternate booting doc?

 

[Morsing]

Well if he's right that there's an AIX installed on the other disk, it should be straight forward to boot from it.
Don't know why it doesn't show up though??

Cheers Henrik Morsing
IBM Certified AIX 4.3 Systems Administration

 

[sectorseveng]

Are these 2 disks on the same controller? Desktop RS boxes can be very picky about which controller they will boot from. I suspect all the devices that are showing up in service mode will be on scsi0 and the others on scsi1.