thatguymeb

I had been struggling with a new R710 I acquired. I was also having the "Failed to Allocate memory for Kernel command line, bailing out booting kernel failed: bad file number" error but was struggling to get it to boot in BIOS mode. This is the stupidest thing, but in the R710 BIOS after changing the boot order and all that to use the internal USB, you have to go back to the Boot selector menu and hit SPACE BAR to ENABLE the drive to boot. I also had prepared the drive with PopOS and some other steps along the way but this might have been the key issue for me.