I am attempting to setup a htpc, with ubuntu booting from USB and 3 SATA disks as a raid array.

I installed Ubuntu 11.10 minimal to the USB device, everything was working OK for the first few hours, however after running apt-get upgrade, it no longer boots from GRUB2 (the usual blinking cursor issue) However, it boots fine if I disconnect the sata HDD in the machine (so the USB device is the only boot device)

I am assuming (correct me if I am wrong) that the SATA disk is being assigned /dev/sda and attempting to boot from HDD, and therefore the USB device is getting the wrong /dev/sdX?

other notes, the sata disks are unpartitioned and pressing shift during boot does not bring up the grub menu also.

Thank you for your time


In your BIOS settings, bring Boot from USB to top.

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Apologies for the late reply folks. I've since found out that it is a fault with either my machine(motherboard) or the usb device I was using. I attempted this on a different PC while I was at work with a different thumb drive and it had no issues.

For reference my motherboard is a MSI H67MAE35 and the USB device was a PNY 4GB thumb drive.

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