Hi krytgames
That's not a lot of information to go on. Holding back information, such as which boot code you deleted, makes diagnosis even
more difficult. Since you choose to conceal that information, all I can do is guess:
You deleted the waitusb bootcode and as a result sda2 is not detected. Therefore, the device doesn't get mounted at
/mnt/sda2, extensions don't get loaded, and mydata.tcz doesn't get restored.. If there are persistent /home or /opt, they
won't be found so they don't get mounted to the root file system.