This problem has to do with the JMicron controller on your motherboard.
Get the daily ISO on Monday Apr 2 from http://cdimage.ubuntu.com/daily-
live/current which will contain lib-ata fixes, boot from the CD and make
sure all of your drives appear. If so, then we'll proceed from there.
** Changed in: linux-source-2.6.20 (Ubuntu)
Importance: Undecided => Low
Assignee: Tim Gardner => Ubuntu Kernel Team
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IDE disks not found
https://launchpad.net/bugs/97325
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