I've created in accordance with these instructions (http://zenit.senecac.on.ca/wik.....or_Storage) a corresponding partition on a hard drive.
Then I have in the file"cmdline.txt", the root-device to "root = / dev/sda1" changed.
booting but stops after the hard disk was detected.
Still need further changes are made (fstab, etc)?
Please excuse my bad english.