[Bug 756853] Re: 11.04 beta aligns 4k disks on cylinder 63

[Uli Tillich]

I can also confirm this bug.

As a workaround the partitions can be created from a live disk before
installing, as described here: http://askubuntu.com/questions/55214/how-
do-i-correctly-align-partions-on-a-hdd-with-sector-size-of-4096-bytes.

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https://bugs.launchpad.net/bugs/756853

Title:
  11.04 beta aligns 4k disks on cylinder 63

Status in “partman-base” package in Ubuntu:
  Incomplete

Bug description:
  Binary package hint: ubiquity

  The default install partitions disks with 4k sectors improperly. When
  electing to use the entire disk, the primary partition is misaligned
  on newer systems. On my disk, the partitions were aligned at cylinder
  63. The automatic installer should either check the reported sector
  size (not always reliable), or leave unallocated space at the front of
  the drive to ensure that newer disks with 4k sectors, as well as older
  drives with 512-byte sectors, are aligned properly.

  The only workaround I could find was to manually allocate *all*
  partitions. To do that seems to require two full trips through the
  installer, because manual partitions are only written during final
  installation--it doesn't appear that there's a way to create a 1MB
  partition and then allow Ubuntu to install the rest automatically
  unless the empty space is detected before the partitioning section of
  the installer.

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