Ubuntu 32 to 64 bit
43778
Is it possible to "upgrade" from a 32bit to a 64bit installation?
74009
How do I run 32-bit programs on a 64-bit Debian/Ubuntu?
104052
Using python 32 bit in 64bit platform
82504
How much memory can a 32 bit process access on a 64 bit operating system?
147378
How do I check whether my hardware is 64-bit capable in Windows?
33540
How can I switch a 32-bit installation to a 64-bit one?
51980
Can I install 64-bit Eclipse on 32-bit Ubuntu?
54368
How do you run a 32-bit program on a 64-bit version of Ubuntu?
146609
Is it possible to migrate programs from 32 bit Windows to a new 64 bit Windows machine (both Windows 7)?
155514
Is my system able to run 64-bit OS?
2489
Installing a 16-bit Windows 95 game on 64-bit Windows 7 Home Premium
31374
Why doesn't 32-bit Eclipse run in 64-bit Ubuntu?
151499
Can I install Windows 7 64 bit on VirtualBox running on a Windows 7 32 bit OS?
6377
Can 64-bit software run on 32-bit OS?
74861
How to combine two 32-bit integers into one 64-bit integer?
92829
Detect 64bit OS (windows) in Python
19253
How do I burn the Ubuntu ISO to a CD?