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The other partitions I'm planning to use for other OSes.
Anyway, I'm using GRUB as my boot manager and I believe it's installed into the mbr of my hda drive. But it's still set up to boot hdb1 and use hdb5 and hdb6 as my data and swap partitions.
I want to make hda5 my new /, and hda8 and hda7 as my data and swap partitions. I know I can just use a live cd to copy the data all over to each respective partition, and edit fstab on hda5 so that it uses the hda partitions, but how do I edit/update GRUB so that it boots hda5, and not hdb1?
For example, I can edit /boot/grub/menu.lst to use hda5 while I'm booted into hdb1, but then if I run update-grub, will that work? Or should I copy the data over, and then edit /boot/grub/menu.lst on hda5? In that case, how do I update GRUB?
Also, should I install GRUB onto the boot sector of /dev/hda5 in addition to copying the data over? Or should I do both - install it into the mbr of hda and the boot sector of hda5?
The other option I considered was to do a fresh install to hda5 and during the installation add hda8 and hda7 to fstab. I could then install and set up GRUB to be my boot manager, and once I can boot up fine to hda5, use the live cd to copy the data from hdb to hda. If I do this, are there any files I shouldn't overwrite or should manually edit after I copy the data over?