On 9/15/2010 8:00 AM, Boris Epstein wrote:

Hello listmates,

I have been playing with Xen VM's and was wondering what the minimum RAM size in which you could run CentOS 5.5 (i386). So far I managed to install in 256 MB or 512 MB and then shrink the VM's RAM to 128 MB and still run the installation. Would anyone know why the install in a 128 MB VM fails (even in text mode)?

If you are running VM's you can just copy a working image instead of repeating the installs - and if you have fairly identical hardware you can do the same with disk images on physical machines. It's more a question of whether that's enough RAM to do anything useful once you are running. In particular it doesn't seem like a great idea to run VM's at all if you don't have RAM to spare.