Existing bios_grub partition is not reused

[Mario Limonciello]

Binary package hint: partman-partitioning

ubiquity 2.2.24
partman-partitioning 72ubuntu4

I have an existing bios_grub partition on the disk. Here's the basic layout:

Model: ATA VBOX HARDDISK (scsi)
Disk /dev/sda: 21.5GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number Start End Size File system Name Flags
 1 17.4kB 17.9kB 512B bios_grub

Now I run through ubiquity and tell it to use the largest continuous free space. It clobbers the bios_grub flag, and makes a new bios_grub partition instead that it decides to use:

Model: ATA VBOX HARDDISK (scsi)
Disk /dev/sda: 21.5GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number Start End Size File system Name Flags
 1 17.4kB 17.9kB 512B
 2 1049kB 2097kB 1049kB bios_grub
 3 2097kB 20.5GB 20.5GB
 4 20.5GB 21.5GB 938MB linux-swap(v1)

[Colin Watson (cjwatson)]

This was fixed in natty:

partman-auto (93ubuntu15) natty; urgency=low

  * Add $reusemethod internal specifier, which excludes the partition if a
    partition with the same method already exists.
  * If there is an existing BIOS Boot Partition, reuse it rather than
    creating a new one (LP: #746313).

 -- Colin Watson <email address hidden> Wed, 20 Apr 2011 17:50:59 +0100