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Floppy disk format utility dos9/9/2023 ![]() XDF, a high-density diskette format used by IBM.fdformat, a similar program that offers less capacity.DMF, a high-density diskette format used by Microsoft.A similar technique was also used by Vincent Joguin's Disk2FDI for Amiga floppies. 2MGUI utilized bit banging and tricked the floppy controller into writing a full track of data as a single sector before resetting the floppy controller in order to avoid overwriting the next track, enabling the absolute maximum capacity possible at the physical level. Both programs implemented disk I/O speedups in the form of "Sector Sliding" and "DiskBoost", which work on the principle of ordering the physical sectors on the disk to facilitate pauseless reading over track changes. Of these, 2M was the main program enabling the formatting, reading and writing of high density 3.5" disks formatted to a capacity of either 1804 KiB or 1886 KB, and 2MGUI was a proof-of-concept program that demonstrated the ability to format any normal high density 3.5" disk to a capacity of over two million bytes (1972 KiB) on any disk drive. ![]() The program consisted of two major components: 2M and 2MGUI (from "2M Guinness"). It was written in C and assembler and compiled using Borland C++ 3.1. The last version, v3.0, was released on 6 March 1995. It saw active development from 1993 to 1995. It enables higher than normal capacity formatting of floppy disks. JSTOR ( July 2023) ( Learn how and when to remove this template message)ĢM is a DOS program by the Spanish programmer Ciriaco García de Celis.If notability cannot be shown, the article is likely to be merged, redirected, or deleted. Please help to demonstrate the notability of the topic by citing reliable secondary sources that are independent of the topic and provide significant coverage of it beyond a mere trivial mention. The topic of this article may not meet Wikipedia's general notability guideline.
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