Hi Daniel, I was able to get my system to A18 of the BIOS. The X31 version was an experimental version, but surprisingly it prevented this bug. I ran some tests by installing and booting a Saucy LiveCD on the machine.
Here are some results: BIOS set to Legacy mode and pressing F12 during boot to access Boot menu: 1. Booting LiveCD and selecting "USB Storage Device" under "LEGACY BOOT": "Selected boot device failed." "Press any key to reboot the system." 2. Booting LiveCD and selecting "UEFI: INT13(usb,0x81)" under "UEFI BOOT:" I get the GRUB menu and can install or boot from LiveCD. 3. If I set BIOS to boot USB first, then I get this message: "Attempted to Boot UEFI Volume from Legacy Mode." "To Boot the UEFI Vollume Automatically, rather than via F12: ... ... BIOS set to UEFI mode and pressing F12 during boot to access Boot menu: 1. Booting LiveCD and selecting "USB Storage Device" under "LEGACY BOOT": "Selected boot device failed." "Press any key to reboot the system." 2. Booting LiveCD and selecting "UEFI: INT13(usb,0x81)" under "UEFI BOOT:" I get the GRUB menu and can install or boot from LiveCD. So it appears this issue may be related to UEFI and the BIOS. Can you try the same steps I performed above and see if you get similar results? I assume booting without selecting F12 is how you reproduce this bug, but trying some of the other options might provide some additional information. Also, it looks like you originally installed Raring on here. Do you recall if you saw any issues during that install? Do you recall if you had UEFI or Legacy boot enabled during that installation? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1212977 Title: [Dell Optiplex 990] Saucy daily-live images are unbootable, stuck in BusyBox shell To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1212977/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
