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On 04/22/2014 12:53 PM, Arthur Dent
wrote:
I had this same problem.On Tue, 2014-04-22 at 12:17 +0100, Arthur Dent wrote:The reboot put me back into my old F16 install (at least I know that hasn't been screwed up!) with the grub menu offering me only varying kernels from F16. It seems F20 has not installed the bootloader properly. What are the steps for getting F20 to boot (while, if possible still giving me the option to boot into F16)?OK - So now I'm really flummoxed. Here's what I did: I booted into the F16 install. I ran os-prober which found the new F20 kernel on the other partition (it still listed it below all the F16 ones) and ran grub2-mkconfig -o /boot/grub2/grub.cfg This allowed me to reboot and see the new F20 install (listed about half-way down the list of choices on the grub menu). The F16 install is still the default. I was then able to boot into this 3.11.10-301.fc20.x86_64 kernel. I did a bit of tinkering (pointed /home to the /home partition etc) and then ran yum update. This brought in the latest kernel (3.13.10-200.fc20.x86_64). I ran os-prober and grub2-mkconfig -o /boot/grub2/grub.cfg again. For good measure I even installed grub-customizer and, sure enough, running that showed a lovely list with 3.13 at the top, 3.11 beneath it and 3.6 (F16) below that. My thinking here is that I am booted *into the F20 kernel* therefore any changes will now be written to /boot *here*. A save and a reboot and... Back to the original grub screen... F16 kernels at the top, the 3.11 F20 kernel below them and NO 3.13 kernel listed! So when I run grub2-mkconfig -o /boot/grub2/grub.cfg from within the F20 kernel where is it writing to and why isn't the bootloader seeing it? Any help much appreciated. I can boot into F20 at least now (but not the latest kernel) but i have to do it manually (the default it still the F16 kernel). Thanks Mark I install F20 on a second drive, Like sdb instead of sda ?? I put a second drive in computer sdb and installed F20 on it but i couldn't boot into F20 sdb it kept going back to F18 on sda, after all the work on Grub2, the only way I could get it to work was to put the NEW drive in as sda from sdb and original sda with F18 on it as sdb by changing the cables on drives. I then reinstalled F20 on sda and walla I can boot up on F20, F18, and Windows 7. I don't know your configuration but that is how I got into work. LOL! |
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