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On a DELL Dimension 9150, I've been trying to install 11.10 from a Live USB. Ubuntu runs fine from the Live USB. On the first install, it failed at the last step, 'unable to write bootloader' to the selected partition, please select another partition.

There were 2 SATA HDs in RAID and in case that was causing the installer some problems, I disabled RAID and disconnected one of the SATA drives (as well as disabling that SATA channel in BIOS).

Went back to the start of the installation, and everything seemed to go smoothly. Got to the reboot point, and removed the install media as instructed.

But when it rebooted, it gives this 'no boot device available' error when it tries to boot from the hard drive.

Any suggestions, please?

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Is the iso you used corrupt? Try using the built-in utility that comes up when you first boot. – bntser Feb 26 '12 at 13:13
Do you mean boot from the Live USB again and run a utility? thx – Eoin Feb 26 '12 at 13:30
I think the ISO is fine, since I could run Ubuntu from the Live USB. The only utility I see in the menu when I boot from the USB is 'test memory'. Did you mean something else? – Eoin Feb 26 '12 at 13:32
Well - this might be fixing itself. I ran the BIOS disk check utility on the HD, it passed, and then next time it booted up into Ubuntu. Running updates now, and then will see if it reboots normally. Hopefully this is the end of it! – Eoin Feb 26 '12 at 14:40
When I boot a live CD there is a check whether the cd is valid or not. Maybe it isn't there on a usb. – bntser Feb 27 '12 at 3:16

No better time than now to learn all of the power of Grub.

Specifically, this section:

It will at least let you see what Grub sees.

share|improve this answer
Thanks, I'll read up on that. The original problem seems to have mysteriously resolved itself somehow for now. – Eoin Feb 26 '12 at 19:22

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