Dynamic Drive Overlay

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Dynamic Drive Overlay (also referred to as: software translation driver) is a software technique to enable a system BIOS that does not support Logical Block Addressing to access drives larger than 538MB.

This technique overrides some of the motherboard BIOS' hard disk controller driver in RAM. To allow access to the full size of any hard disk the software must be loaded before other programs try to access the disk. To ensure that the driver gets loaded, the boot disk's master boot record is modified and the software installed at the beginning of the disk.

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