meanmrmustard
March 7th, 2012, 08:15 PM
With gpt you need the bios_grub partition, do you have that?
Yes
You do not need a /boot and it makes things somewhat more difficult to manage as it is another partition to make sure you size correctly and houseclean. If boot issues you have to remember to mount it also. Many instructions on reinstalling grub do not mention /boot (or just have a footnote) as most desktops do not have a /boot. Often ext2 is uses as the journal is not required for a small partition that is just read from other than updates. Since it is small a file check can still be fairly quick.
This is basically an experiment so I'll drop the /boot partition. Never used one before but I'm up for the learning so I thought I'd include it. Makes sense to simply things as much as possible. Maybe I'll play with that later.
I think Herman now does not even have a separate swap partition but uses a swap file.
Herman on advantages/disadvantages of separate system partitions post#3
http://ubuntuforums.org/showthread.php?t=1410392
Thanks!
If using gpt with BIOS create a 1MB bios_grub partition. I used gparted and selected gpt under device, advanced & select gpt over msdos(MBR) default partitioning....
Yup, did that.
In a GPT partition map, the 31 kiB area after Master Boot Record where GRUB is usually embedded to, does not exist. When GRUB can't be embedded, its only option is to use blocklists, which are unreliable and discouraged.
Thus, you must make a separate "BIOS boot partition" to hold core.img.
Since the BIOS Boot Partition ("bios_grub" flag set in GNU Parted) is used without a filesystem for storing GRUB 2 boot code "unknown" filesystem! may be shown in many Partition tools.
You can set bios_grub flag in gparted or with command line: In GPT fdisk (gdisk), give it a type code of EF02.
sudo parted /dev/sda set <partition_number> bios_grub on
Can I assume you have done a full Ubuntu install on a 3 TB or larger drive?
Thanks for your help.