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I accidentally clicked this option when installing 12.10. Now, I am not seeing my other operating systems show up. I tried fgrep menuentry /boot/grub/grub/.cfg and only see Ubuntu. When I checked my partitions using fdsik, I saw that there are three partitions still.

If the operating systems are still there, how would I be able to access them?

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Hi Mariah, welcome to AskUbuntu! Could you edit your question and include the output of fdisk -l? –  Flimm Dec 4 '12 at 14:10
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1 Answer

Can you describe clearly? What is yoru other operating system? Linux or Windows?

You can need to activate the existing volume groups if you access the existing file systems (partitions / logical volumes), for example, if you boot from system rescue CD and want to access the volume group and logical volumes, you need to do the following:

vgchange -a y

Then you can show the logical volumes and mount the logical volumes

lvdisplay

mount -t fs_type /dev/volume_group_name/logical_volume_name /mnt/mount_point

Anyway, you need to provide more information before we can help.

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