[nmglug] bios mount gabroken.

[Ted Pomeroy]

a., do you have a disk and some help to review the F2 settings? Or a
usb image? If not, is there another Linux user in your area who can
give you a disk or usb image.  Since you boot into an accessible
commandline, and your disk actually seems to be present in lsblk, try
'sudo reboot -n' when the disk is in the cd drive and use F12  or F2
to select the disk for booting. If that continues to fail, try a usb
image or one on an SD card if you have an SD slot.  Good luck, Ted P.