Erick Perez wrote: > I want to install centos 4.4 in a CF card and use a ram disk for > operations. It means no hard disk attached to the computer. The > machine will only run an antispam antivirus gateway. > What documents can I read to make /var and /tmp sit on a ram disk and > boot the operating system in read write and switch to read only after > booting? I have heard that there are read-write limitations that apply to some CF and similar implementations, and that the memory can "wear out" fairly quickly. ipcop is designed to run from cf, I suggest you have a look at it. Whether you use it or not, it is likely to provide you with the education you need. booting from a network can be a satisfactory alternative. You might need a boot floppy (or CD) to get enough intelligence to mount your root filesystem via NFS. You could also contemplate booting & running from CD. Is there a CentOS-Live? If not, there is Fedora-Live, and you could also base from Knoppix (first, remove almost everything) or Damn Small Linux (Knoppix with almost everything removed, but some additions). fwiw I recently installed Kubuntu 6.10 on a test system. It was fairly easy to create a separate root filesystem, and using PXE I can boot that on various systems and use it for emergency/repair/recovery/inspections in much the same way one would use Knoppix. Except I don't have to find the CD. -- Cheers John -- spambait 1aaaaaaa at coco.merseine.nu Z1aaaaaaa at coco.merseine.nu Please do not reply off-list