anisha@linux-uitj:~> cat /etc/issue && uname -aWelcome to openSUSE 11.2 Emerald - Kernel \r (\l).Linux linux-uitj 2.6.31.5-0.1-desktop #1 SMP PREEMPT 2009-10-26 15:49:03 +0100 x86_64 x86_64 x86_64 GNU/Linuxanisha@linux-uitj:~>Doesn't this output show that this is a 64 bit machine?Now when I try to load a 64 bit OpenSUSE 11.3 ISO on the VirtualBox, I get a message as shown in the thread title!anisha@linux-uitj:~/tarBalls> file opensuse-dvd-x86_64.0702..001.isoopensuse-dvd-x86_64.0702..001.iso: ISO 9660 CD-ROM filesystem data 'openSUSE-DVD-x86_64.0702..001  ' (bootable)anisha@linux-uitj:~/tarBalls>
This is a 32 bit computer, you can't use 64 bit software on it
opensuse;virtualbox
You probably have to recreate your virtual machine. Be very careful in this step to select a 64-bit Operating System Type, otherwise you will emulate a 32-bit guest machine (on your 64-bit host machine).You need to recreate the virtual machine because changing the type later has no effect on VM settings.