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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 .
The Windows 7 diskpart command The ReactOS diskpart command. In computing, diskpart is a command-line disk partitioning utility included in Windows 2000 and later Microsoft operating systems, replacing its predecessor, fdisk. [1] [2] The command is also available in ReactOS. [3]
High-level formatting of disks on these systems is traditionally done using the mkfs command. On Linux (and potentially other systems as well) mkfs is typically a wrapper around filesystem-specific commands which have the name mkfs.fsname, where fsname is the name of the filesystem with which to format the disk. [33]
Copies of these utility command programs had to be on an accessible disk, either on the current drive or on the command path set in the command interpreter. In the list below, commands that can accept more than one file name, or a filename including wildcards (* and ?), are said to accept a filespec (file specification) parameter.
Format unit: Prepares a storage medium for use. In a disk, a low level format will occur. Some tape drives will erase the tape in response to this command. Read: (four variants): Reads data from a device. Write: (four variants): Writes data to a device. Log sense: Returns current information from log pages.
[38] [39] The built-in Windows shell disk format tool on Windows NT arbitrarily only supports volume sizes up to 32 GB, [nb 4] but Windows supports reading and writing to preexisting larger FAT32 volumes, and these can be created with the command prompt, PowerShell or third-party tools, [41] or by formatting the volume on a non-Windows system ...
fdisk is a command-line utility for disk partitioning. It has been part of DOS, DR FlexOS, IBM OS/2, and early versions of Microsoft Windows, as well as certain ports of FreeBSD, [2] NetBSD, [3] OpenBSD, [4] DragonFly BSD [5] and macOS [6] for compatibility reasons. Windows 2000 and its successors have replaced fdisk with a more advanced tool ...
If the disk side is not otherwise prepared with a custom format, (e.g. for data disks), 664 blocks would be free after formatting, giving 664 × 254 = 168,656 bytes (or almost 165 KB) for user data. By using custom formatting and load/save routines (sometimes included in third-party DOSes, see below), all of the mechanically possible 40 tracks ...