This is something
that I experience on all new Power/AIX systems that I install:
System migrated to AIX
5.3 (or later) might experience double boot
When booting AIX Version 5.3 (or
later) on a system that has previously been running an earlier release of AIX, you
may notice that the system automatically reboots and restarts the boot process.
This is how the firmware processes changed information in the boot image. This
reboot also occurs if the process is reversed. A system previously running AIX
5.3 (or later) that is booting a release of AIX prior to 5.3 goes through the
same process. This
″double boot″ occurs only once; if the stored value does not change,
then the second boot does not occur. If you install AIX 5.3 (or later) and
continue to use only that version, this double boot occurs once, and it occurs
only if your system was running a pre-AIX 5.3 release before you boot AIX 5.3
(or later). Systems
that are preinstalled with AIX 5.3 (or later) and use only that version do not
experience the ″double boot.″
http://publib.boulder.ibm.com/infocenter/aix/v6r1/topic/com.ibm.aix.resources/RELNOTES/610_base_relnotes.pdf
Some will
panic when this happens, but it’s not an issue. It only happens once, on the
first installation of the first AIX or VIOS LPAR you install. After that you
will never see it again.
Tags:
double
boot
gibson
chris
aix