My Dell system came with Win7. I installed Ubuntu 10.04 into an LVM encrypted partition with the /boot unecrypted on it's own partition. The PC boots directly to the Ubuntu decrypt screen with no option for choosing a new kernel or the Windows partition. I've attempted update-grub, but the GRUB menu is never presented and the Win7 installation is never detected. I'm guessing I installed GRUB incorrectly...any ideas on what and how I can correct? Thanks!
1 Answer
Recent versions of GRUB have the timeout hidden. You can hold down left-shift during boot to bring the message up or edit your /boot/grub/grub.conf and remove hiddenmeu
and set the default to something like 10 seconds timeout=10
For grub2 edit the /etc/default/grub file and make the following changes:
#GRUB_HIDDEN_TIMEOUT=0
GRUB_TIMEOUT=10
NOTE: The # symbol will comment out the GRUB_HIDDEN_TIMEOUT and will enable the menu
After making the changes run sudo update-grub to apply the changes
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shift worked - thank you. I don't have grub.conf but grub.cfg. I commented out hiddenmenu and set timeout to 20 seconds, but still the menu did not appear until I held down the left shift...– MattMar 23, 2012 at 21:28
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On Ubuntu you'll need to edit the /etc/default/grub file and change set GRUB_TIMEOUT=10 and put a # in front of theGRUB_HIDDEN_TIMEOUT line. Then run 'sudo update-grub' to apply these changes. Mar 26, 2012 at 15:44
chainloader (hd0,
and press tab, do you see your windows partition? If yes, complete the command with the partition number and)+1
and typeboot
to try to boot from it. If not, maybe you overwrote your Win7 when installing?