Problem on reinstalling Fedora
This is a dualboot system (LVM)
1) Ubuntu 12.04 desktop 64bit
2) Fedora 17 desktop 64bit
On original installtion I installed Ubuntu first leaving about half space of the harddrive (160G total capacity) for Fedora. During installing Fedora I deselected "saving bootloader to sda".
Installation went through without problem with dualboot working properly.
About 3 hours before, for an unknown reason Fedora failed boot. Please see my posting on;
Then I reinstalled Fedora without saving the bootloader on sda. After installation completed I couldn't start Grub on reboot.
Then I reinstalled Fedora the 2nd time wiht bootload saved to sda selected. After installation finish on reboot Grub start but I couldn't find Ubuntu on Grub.
Please help to get Ubuntu back to Grub. TIA
Have you tried the steps at fedoraproject link below:
If that doesn't resolve the problem, run the bootinfoscript and review the output or post it here.
with fedora it might be a good idea to have two grub's installed
leave the MBR with ubuntu's bootloaer
make a 1 GIG ( yes gig "preupgrade" NEEDS THAT MUCH) a 1 Gig "/boot" partition on he FIRST Fedora partition ( must be one of the 4 primary's )
then just ad an entry in Ubuntu's bootlader pointing o fedoras /boot partition
if you ar NOT going to use the unstable "preupgrade" then fedora's /boot partition only needs to be 100 Meg.
Thanks for your advice. Could you please explain in more detail.
Whether you meant to have 2 bootloaders (one for Ubuntu and another for Fedora)? Then which of them will start first at booting?
Now I can't start Ubuntu.
# fdisk -l
But this time I can't leave without saving bootloader at installing Fedora. I don't know why. Otherwise at booting Grub can't popup. It is quite strange to me.
# cat /boot/grub2/grub.cfg
an example might be something like this
single hdd partition layout
ubuntu / fedora
sda1 /boot- ubuntu
sda2 - ubuntu
sda3 /boot fedora
( as long as fedora's /boot is one of the 4 primary partitions any layout will do )
in the gui install do a "custom layout and manually FORCE grub to the first fedora partition
it is in the gui options , but you will need to look for it .
then in the Ubuntu's menu.lis
at the end add something like this
the thinking on using this type of set up is that fedora gets kernel updates every week or few days
and that has to edit the menu.lis/grub.conf EVERY TIME
now grub is fine figuring out just what is installed and only one install is NEEDED
if fedora royally messes up , and it dose happen , then ubuntu's bootloader will not be touched
a bit more work and a bit more complex but if thing go VERY WRONG with one of the os's then the other will NOT have been changed
this also is better if you have more that 1 drive
on a single drive it can be a bit crowded
just use one grub install and sometimes you might have to use the dvd to mount the drive and manually edit the menu.lis manually after you run
" chroot /mnt/sysimage"
if you KNOW the partition locations for everything then that is also easy
there is normally 2 or 3 or 4 different ways to do something
use what YOU like
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