I've tried all of the suggestions I could find from forums and Q&A sites (like this one), but I am still not able to live boot Ubuntu 14.04 from USB.

I am using a SanDisk Cruzer 32GB.

I have tried:

  1. Reformatting as FAT32
  2. Wiping and rebuilding the MBR
  3. Using several different tools including unetbootin and the built-in live USB creator
  4. Checking boot flags
  5. Recreating the partition table

Yes, my BIOS recognizes the drive. Yes, this drive can be booted from.

I have made a bootable USB drive at least 20 times in the past with the same drive without a problem. Any Ideas?

  • Please describe the problem. The application (live creator /unmetbootin) fails, or you can not boot ? What error message and what behavior ? Have you checked the md5 sum of the iso ? – Panther Apr 27 '14 at 18:08
  • @bodhi.zazen There are no errors until I try to boot at which point it says something like: "Boot failure, press any key to continue." – Andrew Apr 27 '14 at 18:17
  • Have you checked the disk image with md5sum? help.ubuntu.com/community/HowToMD5SUM – Nattgew Apr 28 '14 at 17:56

I've figured out my issue, hopefully it will help you, Andrew. In looking at the Partitioning options for the USB key, I see that there was an MBR and a GPT option. You have to ensure you are partitioning with MBR. GPT appears not to create a partition recognized by UEFI or legacy BIOS. I repartitioned, ensuring MBR was selected, reformated FAT32, and now have two USB keys that work, the Corsair Voyager 16GB and the SanDisk Cruizer Glide 32GB.

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