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13.3.23 map

— Command: map to_drive from_drive

Map the drive from_drive to the drive to_drive. This is necessary when you chain-load some operating systems, such as DOS, if such an OS resides at a non-first drive. Here is an example:

          grub> map (hd0) (hd1)
          grub> map (hd1) (hd0)

The example exchanges the order between the first hard disk and the second hard disk. See also DOS/Windows.