Amiga rigid disk block

A Rigid Disk Block (RDB) is a data storage format used on the Amiga computer system. It contains information about how the disk is laid out, including the location of the disk's files and the size of each file. Every disk using the RDB format will have an RDB block at the beginning of the disk, which tells the Amiga where to look for the data stored on the disk. This helps the Amiga to quickly find the data it needs when you start up the computer.