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This topic describes the hard disk location-path format. This format is used to identify each disk in the DiskPart tool by using the location path. The location-path format is based on the physical connection to the computer.
For instructions that describe how to configure Windows to identify a drive based on the location-path format, see Configure Multiple Hard Drives.
Location-Path Format
The basic syntax for the location path for disks that have a Small Computer System Interface (SCSI), Serial Attached SCSI (SAS), or Redundant Array of Independent Disks (RAID) bus type is as follows:
<PnP location path of the adapter>#<Bus Type>(P<Path ID>T<Target ID>L<LUN ID>)
The basic syntax for the location path for disks that have an Advanced Technology Attachment (ATA) or Serial ATA (SATA) bus type is as follows:
<PnP location path of the adapter>#<Bus Type>(C<Channel ID>T<Target ID>L<LUN ID>)
The following table defines the elements in the location path.
| Element | Description |
|---|---|
<PnP location path of the adapter> |
Path of the adapter. Retrieve the path by calling the SetupDiGetDeviceProperty with the DEVPKEY_Device_LocationPaths property. |
#<Bus Type> |
One of the following types: ATA, SCSI, SAS, or RAID. |
P<Path ID> |
PathId field of SCSI_ADDRESS. Retrieve the PathID by calling IOCTL_SCSI_GET_ADDRESS. |
C<Channel ID> |
PathId field of SCSI_ADDRESS. Retrieve the PathID by calling IOCTL_SCSI_GET_ADDRESS.
Note
For disks that use the ATA/SATA bus type, the Channel ID refers to the same field as PathID. The prefix C is still used. |
T<Target ID> |
TargetId field of SCSI_ADDRESS. Retrieve the TargetId by calling IOCTL_SCSI_GET_ADDRESS. |
L<LUN ID> |
Logical Unit Number (LUN) field of SCSI_ADDRESS. Retrieve the LUN by calling IOCTL_SCSI_GET_ADDRESS. |
Examples
The following table gives an example of a location path for each bus or disk type:
| Bus or disk type | Location path |
|---|---|
Integrated Development Environment (IDE), ATA, Parallel ATA (PATA), or SATA |
PCIROOT(0)#PCI(0100)#ATA(C01T03L00) |
SCSI |
PCIROOT(0)#PCI(1C00)#PCI(0000)#SCSI(P00T01L01) |
SAS |
PCIROOT(1)#PCI(0300)#SAS(P00T03L00) |
Peripheral Component Interconnect (PCI) RAID |
PCIROOT(0)#PCI(0200)#PCI(0003)#PCI(0100)#RAID(P02T00L00) |