[Bug 817145] Re: Unable to find a medium containing live file system

[Su]

I have the very same problem with (X)Ubuntu 11.04 (normal and alternate)
i386 on a very new Dell OptiPlex 390 system. HDD is on SATA-0. The DVD
ROM is on SATA-1. BusyBox v1.17.1 appears after selecting 'try Ubuntu
without installation' telling me that it's unable to find a medium
containing live file system. Changing HDD and DVD from SATA-0 to SATA-1
and vice versa does not solve the problem.

I'm able to install (X)Ubuntu from a USB device, but then no CD/DVD
shows up. It's not visible in the Gnome Disk Utility and there's nothing
I can do about it. The DVD ROM runs in Windows7 without any problems.

DELL BIOS does not have any settings (like AHCI or IDE) for the SATA
devices, except [ ] DISABLE and [X] ATA (SATA is configured for ATA
mode). Of course [X] DISABLE does not help at all.

A Linux Mint XFCE on a USB started as Live System can find and mount the
DVD ROM with any media inserted (CD, DVD).

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https://bugs.launchpad.net/bugs/817145

Title:
  Unable to find a medium containing live file system

Status in “casper” package in Ubuntu:
  Confirmed

Bug description:
  Downloaded and burnt Ubuntu 11.04 (Ubiquity installer) to DVD on
  friend's computer. Attempted to boot but was dropped to busybox with
  error 'Unable to find a medium containing live file system'. After
  finding a USB->PS/2 adapter so keyboard would work, I looked at
  casper.log and found the error message '/init: line 7: can't open
  /dev/sdb: No medium found' repeated numerous times followed by 'Unable
  to find a medium containing a live file system'.

  Modifying BIOS settings to use AHCI instead of IDE for sata related
  stuff fixed the issue.

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