Provided by: util-linux_2.37.2-4ubuntu3.4_amd64 

NAME
addpart - tell the kernel about the existence of a partition
SYNOPSIS
addpart device partition start length
DESCRIPTION
addpart tells the Linux kernel about the existence of the specified partition. The command is a simple
wrapper around the "add partition" ioctl.
This command doesn’t manipulate partitions on a block device.
PARAMETERS
device
The disk device.
partition
The partition number.
start
The beginning of the partition (in 512-byte sectors).
length
The length of the partition (in 512-byte sectors).
SEE ALSO
delpart(8), fdisk(8), parted(8), partprobe(8), partx(8)
REPORTING BUGS
For bug reports, use the issue tracker at https://github.com/karelzak/util-linux/issues.
AVAILABILITY
The addpart command is part of the util-linux package which can be downloaded from Linux Kernel Archive
<https://www.kernel.org/pub/linux/utils/util-linux/>.
util-linux 2.37.2 2021-06-02 ADDPART(8)