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In computing, format is a command-line utility that carries out disk formatting. It is a component of various operating systems , including 86-DOS , MS-DOS , IBM PC DOS and OS/2 , Microsoft Windows and ReactOS .
Drive: This command-line argument specifies the drive letter of the disk for which to display the volume label and serial number. Note: On Windows, the volume serial number is displayed only for disks formatted with MS-DOS version 4.0 or later. OS/2 allows the user to specify more than one drive. The vol command displays the volume labels ...
A block, a contiguous number of bytes, is the minimum unit of storage that is read from and written to a disk by a disk driver.The earliest disk drives had fixed block sizes (e.g. the IBM 350 disk storage unit (of the late 1950s) block size was 100 six-bit characters) but starting with the 1301 [8] IBM marketed subsystems that featured variable block sizes: a particular track could have blocks ...
B: — Reserved for a second floppy drive (that was present on many PCs). C: — First hard disk drive partition. D: to Z: — Other disk partitions get labeled here. Windows assigns the next free drive letter to the next drive it encounters while enumerating the disk drives on the system. Drives can be partitioned, thereby creating more drive ...
The command line format program also has a /p: option which writes a 0 to every addressable sector on the drive multiple times (you supply the number of passes after the /p:). However bad sectors are still a problem as there is no way to determine if the drive was successfully able to overwrite them.
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The category OS/2 commands deals with articles related to internal and external commands supported by members of the OS/2 family of operating systems including ArcaOS. ...
The command was originally designed to label floppy disks as a reminder of which one is in the machine. However, it can also be applied to other types of drive such as mapped drives. [5] It is available in MS-DOS versions 3.1 and later and IBM PC DOS releases 3 and later. [6] It is an external command.