[Bug 1080701] Re: After 'Preparing to install Ubuntu' screen, raring installation hangs

[narkosen]

Confirming this bug still exists when using the daily build 64 bit
desktop live install downloaded 2013-04-21.

i7 PC with intel Ivybridge chipset. 
1 x SDD ; 1 x HDD - both aligned to sector 2048 (1MB boundary partition alignment).

Output of sudo parted -l
Model: ATA Samsung SSD 840 (scsi)
Disk /dev/sda: 128GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos

Number  Start   End     Size    Type     File system  Flags
 1      1049kB  42.1GB  42.1GB  primary  ext4         boot
 2      42.1GB  128GB   85.9GB  primary  ext4


Model: ATA ST1000DM003-9YN1 (scsi)
Disk /dev/sdb: 1000GB
Sector size (logical/physical): 512B/4096B
Partition Table: msdos

Number  Start   End     Size    Type      File system     Flags
 1      1049kB  474GB   474GB   primary   ext4
 2      474GB   949GB   474GB   primary   ext4
 3      949GB   1000GB  51.5GB  extended
 5      949GB   970GB   21.5GB  logical   ext4
 6      970GB   992GB   21.5GB  logical   ext4
 7      992GB   1000GB  8582MB  logical   linux-swap(v1)

The only way I could get install to proceed without hanging was to:
a. Boot live session - selecting 'Try Ubuntu' option.
b. Open nautilus and mount a partition (happened to be /home)
c. Start install Ubuntu.

Previous workarounds did not seem to help e.g. CLI ubiquity --debug, starting gparted then closing.
I hope it gets fixed before release as having an OS not able to install from its media is not a great selling point for new users  :-(

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Title:
  After 'Preparing to install Ubuntu' screen, raring installation hangs

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