1 FHD FHD is a program to list the file header of a given file Primary purpose is to list all the pieces of the file to determine how fragmented the file is if it is a large data file, and to determine which absolute blocks on the disk the file occupies, (if troubles occur with the disk) After listing routine information from the file header, fhd lists each piece of the file, reporting on: Number of blocks (decimal) First block # (absolute disk block number, 2 word, octal) Last block # (absolute disk block number, 2 word, octal) Fhd also reports if the header had to be extended (by using an extension file header) and lists the unique file id (FID) for the extension file calling proceedure MCR>FHD nnnnnn,mmmmmm where nnnnnn,mmmmmm is the file's (unique) FILE ID (obtained via a PIP or SRD directory using the "/FU" switch)