I have installed VirtualBox on Windows host with Ubuntu (actually Xubuntu) guest.
after adding 3 more hard drives (virtual hard drives), I ran
ls –l /dev/sd* and there were 3 more drives:
dev/sdb dev/sdc dev/sdd then I ran this code to mount them: sudo mkfs –t ext4 /dev/sdb sudo mount –t ext4 /dev/sdb /home/hershalle/sd2 sudo mkfs –t ext4 /dev/sdc sudo mount –t ext4 /dev/sdc /home/hershalle/sd3 sudo mkfs –t ext4 /dev/sdd sudo mount –t ext4 /dev/sdd /home/hershalle/sd4
the next time I tried to log in, I got this message:
FATAL: No bootable medium found! System halted.
what did I do wrong? and How do I fix it?