The boot log on AIX 4.X can be view by typing the command:
alog -o -t boot
There may be more information than can fit in one screen, so you might want to try the command below and then press the space bar to the next screen:
alog -o -t boot | more
This information may prove useful if AIX stops during the boot process. You can boot AIX from the installation CD-ROM disc and enter the maintenance mode to view the boot log.
This article was published in the 21 February 1997 "Information Alley."