[Bug 430141] Re: No second OS is shown up in grub2

[DBF]

For me, after upgrading to grub2 (package "grub-pc" instead of "grub"), 
the package "os-prober" was not installed, and thus /etc/grub.d/30_os-prober
immediately aborted instead of detecting the other operating systems.

# apt-get install os-prober
# update-grub

should solve this (at least did it for me).

In case you have no grub menu at all, edit
/etc/default/grub, comment out the line GRUB_HIDDEN_TIMEOUT=0
and run update-grub ...

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No second OS is shown up in grub2
https://bugs.launchpad.net/bugs/430141
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