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I run a network of machines each having 4 hard drives. Most are installed as JBOD (just a bunch of disks), but some are installed as RAID, where / is on a RAID1 device. After upgrading to 11.10, the RAID machines display a blank screen right at the beginning of the boot process and stop there - most of the time. The system does respond to Ctrl+Alt+Del at that state, and, every once in a while after many successive reboots, the system does boot successfully. I tested this on two different hardware configurations (nVidia chipset and Intel chipset) and with both 64- and 32-bit Ubuntu with no difference in results. The JBOD machines do not suffer from this issue.

Any suggestions are appreciated.

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please specify how the RAID is being managed. Software RAID, Fake RAID? From the symptoms, it sounds like the array is taking longer than usual to assemble. A dirty workaround would be to just wait and add a rootdelay=90 to your grub args. Anything could be causing the delayed assembly, from a bad disk to a regression. – ppetraki Jan 19 '12 at 15:38
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This question appears to be abandoned and unanswered, could you perhaps add more detail to your question? If this question no longer applies then you can either delete it or answer it yourself if you've solved the problem. Thanks! – coversnail Apr 10 '12 at 19:21

closed as not a real question by Bruno Pereira♦ Apr 22 '12 at 16:46

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, see the FAQ.

1 Answer

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I was able to successfully install and boot Ubuntu 11.10 using RAID. Check out this blog http://www.cynick.com/2011/12/05/successfully-installing-ubuntu-11-10-with-software-raid/

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Whilst this may theoretically answer the question, it would be preferable to include the essential parts of the answer here, and provide the link for reference. – coversnail Apr 16 '12 at 6:58

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