Note You can not install UCS 4.x as 32bit version. UCS 4.x supports 32bit architecture through upgrading from UCS 3.x. 32bit support will be dropped latest with the release of UCS 5.x
How To: Identify architecture of an UCS installation
Option 1 - running system
uname -r
Result on 64bit:
4.9.0-8-amd64
Result on 32bit:
4.9.0-8-686-pae
Option 2 - using rescue system
Step 1
Boot by using a DVD/CD/USB-Stick into the rescue system
Step 2
Allow the rescue system to mount your installed partitions or logical volumes under /target
Step 3
Identify architecture by typing
head -n 1 /target/bin/dash
For a 64bit system it looks similar to this:
ELF>�7@�@8 @e@@@��888���� ����!��!��> h�h�!h�!��TTTDDP�tdfff��Q�tdR�td����!��!xx/lib64/ld-linux-x86-64.so.2GNU
while for a 32bit system it will look like this:
ELF�4�4 (e444 TTTH�H�4�4�4�� �1t�t�t���hhhDDP�tdDeDeDe��Q�tdR�td4�4�4�/lib/ld-linux.so.2
The difference to look at is the string “lib64/ld-linux-x86-64.so.2” compared to “lib/ld-linux.so.2”
The first is a 64bit system while the second is a 32bit system.