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Rescue & Recovery disks authenticated by BIOS

Hard Disk, Rescue & Recovery

Question

 

If one has installed a new hard drive in their ThinkCentre or ThinkPad or somehow managed to delete everything from the original hard drive, the only way I know of to restore the Windows OS and the factory image is to use the Rescue and Recovery CDs or DVDs.

 

With nothing else to go by, how do the R&R CDs know that the original image, in particular the Windows OS, is being restored to a legitimate system?

 

Answer

The recovery cds' will check for a bios identifier before they start the recovery process.