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Disabling 64 Bit on AIX 5.1

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unixadmin

MIS
Jan 27, 2003
11
US
We have a test server where I enabled 64 bit. The application owner has asked that we turn off 64 bit because they had some issues that they think are 64 bit related and they want to run a 32 bit environment for some testing.

I went through SMIT and it only gives me the choice to enable 64 bit. I took the inittab entry out and rebooted....if I run "bootinfo -y" it still shows 64 bit.

When I run an "uptime", I get the message
"Cannot load progarm /usr/bin/w64 becuase of the following
error"
"Cannot run a 64-bit program until the 64-bit environment has been configured"

How to I fully turn it off?
 
I was doing my search incorrectly....I think I found the answer:

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)


My system is rebooting now, so I will find out in a few minutes.
 
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