[Bug 879387] Re: Partitions misaligned on advanced format drive WD20EARX

[eddie]

I am having the same problem with a newly purchased ASUS U46e-bal6 which
has a WD7500BPKT-80PK4T0 (750GB drive).  I have installed ubuntu several
times both manually configuring partitions and letting ubuntu create
them, all with the same result.  Disk utility tells me that my extended
partition is misaligned by 1024 bytes

****************************************************************************************

sudo parted -l
Model: ATA WDC WD7500BPKT-8 (scsi)
Disk /dev/sda: 750GB
Sector size (logical/physical): 512B/4096B
Partition Table: msdos

Number  Start   End    Size    Type      File system     Flags
 1      1049kB  726GB  726GB   primary   ext4            boot
 2      726GB   750GB  24.3GB  extended
 5      726GB   750GB  24.3GB  logical   linux-swap(v1)


***************************************************************************************




** Attachment added: "screenshot of disk utility"
   https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/879387/+attachment/2646083/+files/Screenshot%20at%202011-12-24%2016%3A22%3A22.png

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https://bugs.launchpad.net/bugs/879387

Title:
  Partitions misaligned on advanced format drive WD20EARX

Status in “ubiquity” package in Ubuntu:
  Confirmed

Bug description:
  After installing Ubuntu Oneiric 11.10 using manual partitioning on a
  2TB Western Digital WD20EARX with "advanced format" (4k sectors?) Disk
  Utility says all partitions are misaligned. Parted tells the same
  story (below). I'd expect the partitioner to align partitions.

  $ sudo parted -l
  Model: ATA WDC WD20EARX-00P (scsi)
  Disk /dev/sda: 2000GB
  Sector size (logical/physical): 512B/4096B
  Partition Table: gpt

  Number  Start   End     Size    File system     Name  Flags
   1      17.4kB  25.0GB  25.0GB  ext4
   2      25.0GB  125GB   100GB
   3      125GB   150GB   25.0GB  linux-swap(v1)
   4      150GB   2000GB  1850GB  ext4

  $ sudo parted /dev/sda align-check opt 1
  1 not aligned
  $ sudo parted /dev/sda align-check min 1
  1 not aligned

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: ubiquity (not installed)
  ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
  Uname: Linux 3.0.0-12-generic x86_64
  ApportVersion: 1.23-0ubuntu3
  Architecture: amd64
  Date: Fri Oct 21 14:39:37 2011
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
  ProcEnviron:
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubiquity
  UpgradeStatus: No upgrade log present (probably fresh install)

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