Partitioner's choice is usb drive when installing from usb stick instead of /dev/sda (hard drive)
I also experienced this bug while performing a desktop install using the 32-bit (and 64-bit separately) desktop 12.04.1 livecd installers. Both images (as they are all now isohybrid) were written to a usb stick (2GB) using dd. At the partitioning stage, it asked where to install the MBR and the default choice was /dev/sdb (which was the usb stick from which it was being installed.) /dev/sda was the sole hard drive installed (PATA drives.)
The expected behavior would be to default to /dev/sda or the first hard drive and not the usb stick from which it was being installed.
This appears to be a regression from Ubuntu 10.04 when it did not occur. If the user does not catch this, the fresh install is unbootable and drops to a grub> prompt when attempting to boot.
Description: Ubuntu 12.04.1 LTS
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Thanks for your work on this project.