Enabling 64-bit Kernel on AIX 5.3? 1

[jjct1]

Can you enable the 64-bit Kernel on AIX 5.3 without re-installing? I installed AIX and took the defaults which is for 32-bit. I want to enable the 64-bit support. I found some instructions for doing this on AIX 4.3 but am not sure if the same steps apply for 5.3?

 

[rzs0502]

Check /usr/lib/boot
Link unix points to your kernel (32 or 64)
If there is a directory called unix_64, you 64 bit kernel is there

From 32-bit to 64-bit:

ln -sf /usr/lib/boot/unix_64 /unix
ln -sf /usr/lib/boot/unix_64 /usr/lib/boot/unix
lslv -m hd5
bosboot -ad /dev/ipldevice
shutdown -Fr
bootinfo -K (should now be 64)

To change the kernel back to 32-bit:

From 64-bit to 32-bit:

ln -sf /usr/lib/boot/unix_mp /unix
ln -sf /usr/lib/boot/unix_mp /usr/lib/boot/unix
lslv -m hd5
bosboot -ad /dev/ipldevice
shutdown -Fr
bootinfo -K (should now be 32)




"If you always do what you've always done, you will always be where you've always been."