2M (DOS)

2M (DOS)

2M is a DOS program by the Spanish programmer "Ciriaco García de Celis". It enables higher than normal capacity formatting of floppy disks. It saw active development from 1993 to 1995. The last version, v3.0, was released on March 6, 1995. It was written in C and compiled using Borland C++ 3.1.

The program consisted of two major components: 2M and 2MGUI. 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 KiB, 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. 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.

See also

* fdformat, a similar program that offers less capacity
* MAXI Disk, a similar program that offers less capacity
* DMF, a high-density diskette format used by Microsoft
* XDF, a high-density diskette format used by IBM

External links

* [ftp://ftp.simtel.net/pub/simtelnet/msdos/diskutil/2m30.zip A direct download link to 2m30.zip]
* [ftp://ftp.simtel.net/pub/simtelnet/msdos/diskutil/2m30src.zip A direct download link to 2m30src.zip]

References

* All information is based on that given in 2M-INFO.EXE supplied with 2M v3.0


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