I'm trying to triple-boot MacOS, Centos 6, and Ubuntu 12.04.
Here's my approach:
- Use rEFIt to choose between MacOS and grub
- Use grub to choose between CentOS and Ubuntu
I have all installed on my system, but only MacOS works. Right now, trying to go into grub from MacOS results in this error (verbatim, since I don't have copy+paste without an OS)
No operating system found
I suspect that I accidentally killed the boot partition somehow while installing CentOS, since Ubuntu worked before that.
So, I boot into a Ubuntu USB-based livecd, and run
# grub-install /dev/sda5 # sda5 is a boot partition /usr/sbin/grub-probe: error: cannot find a device for /boot/grub (is /dev mounted?). #
So what am I doing wrong?
P.S. Adding a way to boot straight into Ubuntu or CentOS from rEFIt would be fine too.