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The short answer is: yes.
Best is to boot using a xUbuntu live filesystem, and perform all partition information changes.
Check the following partition.
Device Boot Start End Blocks Id System
/dev/sda1 * 1 2550 20482843+ 7 HPFS/NTFS
/dev/sda2 2551 3766 9767520 83 Linux
/dev/sda3 3767 4028 2104515 82 Linux swap / Solaris
/dev/sda4 4029 24322 163006074 f W95 Ext'd (LBA)
/dev/sda5 4029 7296 26250178+ 83 Linux
/dev/sda6 7297 14591 58593750+ 83 Linux
/dev/sda7 14591 24322 78162050+ 83 Linux
Now - I want to add another OS - in my case - Mac OS-X. So - in case you want to add the hfs+ filesystem partition between sda1 and sda2 - you have to move all partition bigger 1 to partition + 1.
this would result in the following:
Device Boot Start End Blocks Id System
/dev/sda1 * 1 2550 20482843+ 7 HPFS/NTFS
/dev/sda2 2551 7415 39078112+ af Unknown
/dev/sda3 7416 10000 20764012+ 83 Linux
/dev/sda4 10001 24321 115033432+ 5 Extended
/dev/sda5 10001 10262 2104452 82 Linux swap / Solaris
/dev/sda6 10263 13041 22322286 83 Linux
/dev/sda7 13042 19121 48837568+ 83 Linux
/dev/sda8 19122 24321 41768968+ 83 Linux
Now - to be able to boot up the move OS - you will need to modify 1 file, and recreate the initrd file.
For this - check the uid of the swap partition with:
$ sudo blkid | grep swap
/dev/sda5: TYPE="swap" UUID="0bb117bb-d03e-4674-99ef-97a3575ed8f1"
Check that the UUID in /etc/initramfs-tools/conf.d/resum matches the UUID just discovered. If not - change it.
After that - recreate the initrd file with:
sudo update-initramfs -c -k 2.6.24-19-generic
Make also sure that the parition UUID's as found in the /etc/fstab match the new real ones.
And you should be able to boot again normally.
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