| From: Eric <spamsink@xxxxxxxxxxxxxxx> | I have a fresh installation of FC6, I should have mentioned that my installation of FC6 was from scratch, not an upgrade. Apparently an upgrade is the root of much evil. | and decided what the hell, may as well try | a global upgrade and see what happens I have done updates fairly often over all the years of Fedora and many of Red Hat Linux. Mostly they have worked. Only a very few problems. | First of all, what is the "-t" switch to yum? I know "-y" tells yum to answer | "yes" to everything, but I can't find "-t" in the man page. But, I digress... I'm an old-school UNIX guy (using it regularly since 1975) and I really miss the definitive man pages. "yum --help" says: -t, --tolerant be tolerant of errors | Anyway, I tried a global yum upgrade of everything in my fresh FC6 | installation, and after several hours, it hung pretty much the same as yours | did. Unfortunately my hang and yours give very few clues about what went wrong. No (visible) panic message, no error messages. So they could be symptoms very different problems. | I rebooted, and cannot get the new kernel (2.6.20) to boot... gives me | kernel errors. That's sad. What errors? | My problem for the future, though, is I have absolutely NO idea how to revert | to a previous installation and remove the effects of a failed "yum -yt | upgrade". We don't know what failed. We do know that there was a crash in the middle of a yum upgrade. It would be really nice if yum treated the system like a database with ACID properties: upgrades would always be left in a consistent state. /var/log/yum.log might be useful but who knows if it is complete when the run is interrupted by a system crash. | Otherwise, I don't dare upgrade or update much of anything, which for many | reasons is not good policy... As I said, I've had mostly good luck with updates. I don't trust my internet connection so I download the updates repo and use the local copy.