Support booting USB drives with a write protect switch enabled

At least some USB drives with a write protect switch (e.g. Netac U335)
could report "MEDIUM NOT PRESENT" for a while if a write protection is
enabled. Instead of stopping the initialization attempts immediately,
stop only after getting this report for 3 times, to ensure the
successful initialization of such a "broken hardware".

Signed-off-by: Mike Banon <mikebdp2@gmail.com>
1 file changed
tree: d8e8ac1964d6272c3bed4a07b9be904323bf7634
  1. .gitignore
  2. COPYING
  3. COPYING.LESSER
  4. Makefile
  5. README
  6. docs/
  7. scripts/
  8. src/
  9. vgasrc/