Hey guys, i still couldn't make it work on my UDOO after I purchase some parts needed. Combinations of below first 2 trials are boot-able on my spare PC which allow me to input DOS command but yet, neither of them works on my UDOO. Trial 1: Boot-able drive is created (Samsung SATA + USB adapter) --> connecting with UDOO via SATA data & Power cable Result: BOOTMGR is missing Trial 2: Boot-able drive is created (Transcend M.2 SATA + USB adapter) --> connecting with UDOO via M.2 SATA socket Result: BOOTMGR is missing It looks like that the my UDOO board somehow doesn't boot my drives in a prioritised sequence. I do believe they should work but they don't. I am confused now.