Try this method... I found this a LOT easier.
First put the backup into the Saturn and turn on the power. Leave the door open. The system will attempt to verify the disk and will eventually stop at the CD player screen. This will take about 30 seconds to a minute, depending on the disk.
Once the disk has stopped, remove it from the spindle and place an original disk on the spindle.
Make sure the sound volume is turned down so that you can hear the laser assembly motor. Hit the reset button on the Saturn and the disk will begin to spin.
The laser will [1] move to the outside of the disk (this will be the first thing you hear), [2] read the security code on the edge of the disk (you will also hear this), and then [3] move back to the inside of the disk (this will sound like the first noise.). When you hear the third noise, wait at least 1 second and then swap the disk. If the swap is performed correctly you will see the normal âProduced by or under license from Segaâ screen, and the game will load. If not, turn the Saturn off and start over.