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MS-DOS 7.1 adds FAT32 support [11] for larger than 2GB and up to 2TB per volume, [12] and MS-DOS 7.0 and earlier versions of MS-DOS only support FAT12 and FAT16. [13] Logical block addressing (LBA) is supported in MS-DOS 7 for accessing larger hard disks, unlike earlier versions which only supported cylinder-head-sector (CHS)-based addressing.
Originally MS-DOS was designed to be an operating system that could run on any computer with a 8086-family microprocessor.It competed with other operating systems written for such computers, such as CP/M-86 and UCSD Pascal.
DR-DOS 7.06, LBA/FAT32-enabled OEM version of DR-DOS; DR-DOS 7.07, LBA/FAT32-enabled OEM version of DR-DOS; It may also refer to versions of the Microsoft MS-DOS family: MS-DOS 7.0, LBA-enabled DOS component bundled with Windows 95 in 1995; MS-DOS 7.1, LBA/FAT32-enabled DOS component bundled with Windows 98/98 SE in 1998/1999; It may also refer ...
Thus, the lower the LBA value is, the closer the physical sector is to the hard drive's first (that is, outermost [5]) cylinder. CHS tuples can be mapped to LBA address with the following formula: [6] [7] LBA = (C × HPC + H) × SPT + (S − 1) where C, H and S are the cylinder number, the head number, and the sector number; LBA is the logical ...
This is the first MS-DOS version Microsoft offered in a shrink wrap packaged product for smaller OEMs or system builders. [264] Apricot Computers pre-announces MS-DOS 4.0, the first multitasking version. Apricot will sell MS-DOS 4.0 to European customers as the controlling program for network servers that support a new family of Apricot ...
DR-DOS 7.07 (with BDOS 7.4/7.7) by Paul introduced new bootstrap loaders and updated disk tools in order to combine support for CHS and LBA disk access, the FAT12, FAT16 and FAT32 file systems, and the differing bootstrapping conventions of DR-DOS, PC DOS, MS-DOS, Windows, REAL/32 and LOADER into a single NEWLDR MBR and boot sector, so that the ...
Compaq's efforts were possible because IBM had used mostly off-the-shelf parts for the PC and published full technical documentation for it, and because Microsoft had kept the right to license MS-DOS to other computer manufacturers. The only difficulty was the BIOS, because it contained IBM's copyrighted code.
Code page 437 (CCSID 437) is the character set of the original IBM PC (personal computer). [2] It is also known as CP437, OEM-US, OEM 437, [3] PC-8, [4] or MS-DOS Latin US. [5] The set includes all printable ASCII characters as well as some accented letters (), Greek letters, icons, and line-drawing symbols.