How to switch from 32 to 64 Bit Mode on AIX

Technote (FAQ)


Question

How to switch the 32 bit AIX OS to 64 bit Mode.

Answer

Switching From 32 to 64 Bit Mode

To switch from 32-bit mode to 64-bit mode run the following commands, in the given order:

1.ln -sf /usr/lib/boot/unix_64 /unix
2.ln -sf /usr/lib/boot/unix_64 /usr/lib/boot/unix
3.bosboot -ad /dev/ipldevice
4.shutdown -Fr
5.bootinfo -K (should now show 64)

Switching From 64 To 32-Bit Mode

To switch from 64-bit mode to 32-bit mode run the following commands, in the given order:

1.ln -sf /usr/lib/boot/unix_mp /unix
2.ln -sf /usr/lib/boot/unix_mp /usr/lib/boot/unix
3.bosboot -ad /dev/ipldevice
4.shutdown -Fr
5.bootinfo -K (should now show 32)

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Document information


More support for:

Informix Servers

Software version:

9.4, 10.0

Operating system(s):

AIX

Reference #:

1621253

Modified date:

2012-12-26

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