[CentOS] Re: CentOS 4.5 system doesn't boot after installing latest updates
Alfred von Campe
alfred at von-campe.comTue Sep 25 10:38:35 UTC 2007
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> Out of interest, is this something that is always required when > upgrading Grub? > > i.e. should one always manually run "grub-install" /dev/XXX" after > doing so? No, it shouldn't. But in my case, I didn't "upgrade grub". I simply did a "yum update" which installed, among other things, a new kernel, so a reboot was needed. And when I rebooted, grub wouldn't start. So I booted into rescue mode from the CentOS CD #1, and did a "rpm -e grub kernel" followed by "yum install grub kernel". This did not fix the problem. I had to boot into rescue mode again and do a "grub- install /dev/sda". The big question remains, what happened on my system that corrupted the MBR. I could have been anything at all since the last time I rebooted (about a month ago) and not necessarily the "yum update". Alfred
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