On Wed 19 Apr 2017 at 00:12:15 +0200, Pascal Hambourg wrote: > Le 18/04/2017 à 21:14, Brian a écrit : > > > >However, my main point was that the kernel > >identifying a card as a /dev/sdX disk does not imply it will necessarily > >be visible to GRUB and bootable by it. > > If the card reader is idendified as /dev/sdX, then it probably behaves as a > generic USB mass storage device and most BIOS can see it.
A card in one of the slots of my card reader is identified as /dev/sdc1. The reader itself is seen by lsusb. The BIOS doesn't see it and does not have an option to boot from it. So I suppose my reader is not "most BIOS". What is it behaving as? -- Brian.