Must use a high speed 32GB USB 3.0
How to create BootWell™ Drive.
Step 1: To make a BootWell™ drive for a Mac, insert the USB flash drive and then open Data Rescue 4. Please keep in mind that the USB flash drive will be completely erased.
Step 2: Select File from the menu bar and choose “Create BootWell™ Drive”.
Step 3: Within the BootWell™ screen, select the drive you want to use for BootWell™ by clicking on the drive and clicking “Start…”. You will get a warning from Data Rescue 4 against data loss on the BootWell™ drive. After reading the warning click “Continue”.
Step 4: Now Data Rescue 4 will start to create the BootWell™ drive. Once it is completed, you can boot the desired Mac with the new BootWell™ you just created.
Step 5: To boot from the BootWell™ Drive you just created, restart your Mac while holding down the ‘Option’ key.
Step 6: Using the arrow keys on your keyboard, select the drive icon name “Prepare Data Rescue” and press the Return key.
Once you are booted into the BootWell™, it will finalize and then you will be able to proceed with using the software.