Hi The installer way is not the only one to upgrade your system! Especially if it fail to detect your disk/partitions. You should be able to to make the upgrade using "yum upgrade/update" Google on the web about centos upgrade for more info. Regards. On 10/21/07, Mike Edwards <pf-centos at mirkwood.net> wrote: > I'm running into a slight problem trying to upgrade a CentOS 4.4 > install to 5.0. > > The configuration: > CentOS 4.4 is an old install that used to boot natively. That has > since been backed up and restored to two seperate LVs (as the original > install had two partitions). The host system now runs Debian, and I've > been able to successfully boot the old CentOS 4.4 install under Xen > (with a Debian domU kernel, but that's besides the point). > > I've decided to upgrade the CentOS domU to CentOS 5. After determining > that the recommended upgrade path is to do so via the installer, I > grabbed the CentOS installer kernel/ramdisk and configured my domU to > boot from those. The installer comes up without a problem. > > Things get hairy when the installer takes a look at the 'disks'. I > receive the following message: > /dev/xvda currently has a loop partition layout. To use this disk for > the installation of CentOS, it must be re-initialized, causing the loss > of ALL DATA on this drive. > > It looks like the installer doesn't like the fact that there are no > partitions (which is correct, as the 'disk' is actually a logical > volume under lvm). As I'm trying to do an upgrade, and not blow away > my existing setup, this isn't going to work. > > My question, therefore, is - how do I tell the CentOS 5 installer to > ignore the fact that there are no partitions, and to simply do the > install? As mentioned previously, the CentOS domU does boot perfectly > fine, and given the prevalence of volume groups, logical volumes and > virtual machines these days, it seems rather silly to have an installer > absolutely rely on the existence of partitions before it'll let one do > an upgrade or install. > > > -- > > Mike Edwards | If this email address disappears, > Unsolicited advertisments to | assume it was spammed to death. To > this address are not welcome. | reach me in that case, s/-.*@/@/ > > "Our progress as a nation can be no swifter than our progress in education. > The human mind is our fundamental resource." > -- John F. Kennedy > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > -- Alain Spineux aspineux gmail com May the sources be with you