[Bug 530071] Re: Lucid Default live-cd install fails with 4K sector / Advanced Format drives

[Steve Perkins]

Hi,
I've tried the daily build of "Alternate Install" from 12 March on a 4K drive (WD10-EARS) and although the partitions now align on good 4K boundaries, I think the algorithm for creating partitions is working in cylinder units rather than sectors. So using the default install I get partition 1 starting at cylinder 2048 which as LBA 32901120 is a 4KB boundary but it is 16.8GB in to the disk. I think we should be looking at LBA 2048 as the start of the partition, not cylinder.

root at ubuntu1003a3120310ears4k:~# parted
GNU Parted 2.2
Using /dev/sda
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) unit cyl
(parted) p
Model: ATA WDC WD10EARS-00Y (scsi)
Disk /dev/sda: 121601cyl
Sector size (logical/physical): 512B/4096B
BIOS cylinder,head,sector geometry: 121601,255,63.  Each cylinder is 8225kB.
Partition Table: msdos

Number  Start      End        Size       Type      File system     Flags
 1      2048cyl    120831cyl  118784cyl  primary   ext4            boot
 2      120832cyl  121600cyl  769cyl     extended
 5      120832cyl  121600cyl  768cyl     logical   linux-swap(v1)

(parted) unit s
(parted) p
Model: ATA WDC WD10EARS-00Y (scsi)
Disk /dev/sda: 1953525168s
Sector size (logical/physical): 512B/4096B
Partition Table: msdos

Number  Start        End          Size         Type      File system     Flags
 1      32901120s    1941166079s  1908264960s  primary   ext4            boot
 2      1941166080s  1953520064s  12353985s    extended
 5      1941168128s  1953519615s  12351488s    logical   linux-swap(v1)

(parted) unit gb

(parted) p
Model: ATA WDC WD10EARS-00Y (scsi)
Disk /dev/sda: 1000GB
Sector size (logical/physical): 512B/4096B
Partition Table: msdos

Number  Start   End     Size    Type      File system     Flags
 1      16.8GB  994GB   977GB   primary   ext4            boot
 2      994GB   1000GB  6.33GB  extended
 5      994GB   1000GB  6.32GB  logical   linux-swap(v1)

-- 
Lucid Default live-cd install fails with 4K sector / Advanced Format drives
https://bugs.launchpad.net/bugs/530071
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