Tanti Technology

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Bangalore, karnataka, India
Multi-platform UNIX systems consultant and administrator in mutualized and virtualized environments I have 4.5+ years experience in AIX system Administration field. This site will be helpful for system administrator in their day to day activities.Your comments on posts are welcome.This blog is all about IBM AIX Unix flavour. This blog will be used by System admins who will be using AIX in their work life. It can also be used for those newbies who want to get certifications in AIX Administration. This blog will be updated frequently to help the system admins and other new learners. DISCLAIMER: Please note that blog owner takes no responsibility of any kind for any type of data loss or damage by trying any of the command/method mentioned in this blog. You may use the commands/method/scripts on your own responsibility. If you find something useful, a comment would be appreciated to let other viewers also know that the solution/method work(ed) for you.

Thursday, 12 September 2013

Switching between 32-bit & 64-bit modes in AIX


SWITCHING BETWEEN 32-BIT AND 64-BIT MODES
----------------------------------------------------------------------------------------------
To switch from 32-bit mode to 64-bit mode run do 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. smitty load64bit
4. Select Enable/Disable at System Restart
5. Choose Yes and press ENTER.
6. Quit smitty.
7. bosboot -ad /dev/ipldevice
8. shutdown -Fr
9. bootinfo -K (should now show 64)
 
===============================================================
SWITCHING BETWEEN 64-BIT AND 32-BIT MODES
-----------------------------------------------------------------------------------------------
 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. smitty load64bit
4. Select Enable/Disable at System Restart
5. Choose No and press ENTER.
6. Quit smitty.
7. bosboot -ad /dev/ipldevice
8. shutdown -Fr
9. bootinfo -K (should now show 32)

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