Linux sfdisk command

Linux Command Encyclopedia

The Linux sfdisk command is a hard disk partitioning tool program.

sfdisk is a hard disk partitioning tool program that can display partition settings and check whether partitions are normal.

Syntax

sfdisk [-?Tvx][-d <硬盘>][-g <硬盘>][-l <硬盘>][-s <分区>][-V <硬盘>]

Parameters：

• -? or --help Display help.
• -d<disk> Display the settings of hard disk partitions.
• -g<disk> or --show-geometry<disk> Display the CHS parameters of the hard disk.
• -l<disk> Display the related settings of the hard disk partitions.
• -s<partition> Display the size of the partition, in blocks.
• -T or --list-types Display all file system IDs that sfdisk can recognize.
• -v or --version Display version information.
• -V<disk> or --verify<disk> Check whether hard disk partitions are normal.
• -x or --show-extend Display logical partitions in the extended partition.

Examples

Display partition information:

# sfdisk -l

Disk /dev/sda: 1305 cylinders, 255 heads, 63 sectors/track
Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0

Device Boot Start End #cyls #blocks Id System
/dev/sda1 * 0+ 12 13- 104391 83 Linux
/dev/sda2 13 1304 1292 10377990 8e Linux LVM
/dev/sda3 0 - 0 0 0 Empty
/dev/sda4 0 - 0 0 0 Empty

Disk /dev/sdb: 652 cylinders, 255 heads, 63 sectors/track

sfdisk: ERROR: sector 0 does not have an msdos signature
/dev/sdb: unrecognized partition
No partitions found

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