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part command

Synopis

part uuid <interface> <dev>:<part> [varname]
part list <interface> <dev> [flags] [varname]
part start <interface> <dev> <part> <varname>
part size <interface> <dev> <part> <varname>
part number <interface> <dev> <part> <varname>
part type <interface> <dev>:<part> [varname]
part types

Description

The part command is used to manage disk partition related commands.

The 'part uuid' command prints or sets an environment variable to partition UUID

interface
interface for accessing the block device (mmc, sata, scsi, usb, ....)
dev
device number
part
partition number
varname
an optional environment variable to store the current partition UUID value into.

The 'part list' command prints or sets an environment variable to the list of partitions

interface
interface for accessing the block device (mmc, sata, scsi, usb, ....)
dev
device number
part
partition number
flags
-bootable lists only bootable partitions
varname
an optional environment variable to store the list of partitions value into.

The 'part start' commnad sets an environment variable to the start of the partition (in blocks), part can be either partition number or partition name.

interface
interface for accessing the block device (mmc, sata, scsi, usb, ....)
dev
device number
part
partition number
varname
a variable to store the current start of the partition value into.

The 'part size' command sets an environment variable to the size of the partition (in blocks), part can be either partition number or partition name.

interface
interface for accessing the block device (mmc, sata, scsi, usb, ....)
dev
device number
part
partition number
varname
a variable to store the current size of the partition value into.

The 'part number' command sets an environment variable to the partition number using the partition name, part must be specified as partition name.

interface
interface for accessing the block device (mmc, sata, scsi, usb, ....)
dev
device number
part
partition number
varname
a variable to store the current partition number value into

The 'part type' command prints or sets an environment variable to the partition type UUID.

interface
interface for accessing the block device (mmc, sata, scsi, usb, ....)
dev
device number
part
partition number
varname
a variable to store the current partition type UUID value into

The 'part types' command list supported partition table types.

Examples

=> host bind 0 ./test_gpt_disk_image.bin
=> part uuid host 0:1
24156b69-3378-497f-bb3e-b982223de528
=> part uuid host 0:1 varname
=> env print varname
varname=24156b69-3378-497f-bb3e-b982223de528
=>
=> part list host 0

Partition Map for HOST device 0  --   Partition Type: EFI

Part        Start LBA       End LBA         Name
Attributes
Type GUID
Partition GUID
1           0x00000800      0x00000fff      "second"
attrs:      0x0000000000000000
type:       ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
            (data)
guid:       24156b69-3378-497f-bb3e-b982223de528
2           0x00001000      0x00001bff      "first"
attrs:      0x0000000000000000
type:       ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
            (data)
guid:       5272ee44-29ab-4d46-af6c-4b45ac67d3b7
=>
=> part start host 0 2 varname
=> env print varname
varname=1000
=>
=> part size host 0 2 varname
=> env print varname
varname=c00
=>
=> part number host 0 2 varname
=> env print varname
varname=0x2
=>
=> part type host 0:1
ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
=> part type host 0:1 varname
=> env print varname
varname=ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
=>
=> part types
Supported partition tables: EFI, AMIGA, DOS, ISO, MAC

Return value

The return value $? is set to 0 (true) if the command succededd. If an error occurs, the return value $? is set to 1 (false).