hybrid images do not include a valid GPT
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Ubuntu CD Images |
Fix Released
|
High
|
Unassigned | ||
libisofs (Ubuntu) |
Fix Released
|
Medium
|
Steve Langasek |
Bug Description
The insyde UEFI firmware implementation does not see the GPT on the hybrid images generated on nusakan (e.g., the 12.10 beta2 image). This appears to be consistent with what both gdisk and parted show:
$ gdisk -l ~/devel/
GPT fdisk (gdisk) version 0.8.5
Partition table scan:
MBR: MBR only
BSD: not present
APM: not present
GPT: not present
*******
Found invalid GPT and valid MBR; converting MBR to GPT format.
*******
Disk /home/vorlon/
Logical sector size: 512 bytes
Disk identifier (GUID): 1ADDF8C9-
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 1548254
Partitions will be aligned on 2048-sector boundaries
Total free space is 1548221 sectors (756.0 MiB)
Number Start (sector) End (sector) Size Code Name
$
Removing the -partition_offset 16 option from the xorriso commandline is sufficient to generate an image with a recognizable partition table; but I imagine this causes other problems for hybrid systems.
Related branches
Changed in libisofs (Ubuntu): | |
assignee: | nobody → Steve Langasek (vorlon) |
The same behavior is reproducible in OVMF.