Farkas Levente wrote: > hi, > we've got many mandrake 8,9 and 10 system remotely. we'd like to > remotely replace these systems to centos 5. we've 4 disk in them. one is > the system drive (no need for raid) and there is free space on the > remaining 3 disk. so what we think about: > - download the new system to the data disks > - install grub (mandrake has lilo) to boot the old system and reboot > - create the old system in the data disk > - update grub to boot the old system from the data disk and reboot > - repartition the system disk > - transfer the new system to the system disk > - update grub to boot form new system disk and reboot. > this seems to easy but has many very dangerous steps and we has only > remote ssh access to the system. if we loose the connections we can't > access the system anymore and we've to travel a lot! another constrain > that we should have to do this very fast ie. it'd be nice if the system > wouldn't be down for a long time. > - what would be the best method for this? > - what are the dangerous step here? > - what would be the best way and format to transfer the new system to > the disk (we think about an iso file)? > - does anybody do such thing and what is his experience? > thank you for your help in advance. See koan, a helper program with cobbler http://cobbler.et.redhat.com/