Table 45 UEFI shell commands
(continued)
Definition
UEFI shell command
Resets the system
reset
Deletes one or more files or directories
rm
Make a SAL procedure call
salproc
Connect drivers for bootable devices
search
View/configure system security features
secconfig
Sets serial port attributes
sermode
Displays or modifies UEFI Shell environment variables
set
Set the size of a file
setsize
Shifts batch file input parameter positions
shift
Displays SMBIOS information
smbiosview
Stalls the processor for the specified number of microseconds
stall
Boot from tape
tapeboot
Perform TFTP operation
tftp
Displays or changes the current system time
time
Displays or sets time zone information
timezone
Updates filename timestamp with current system date and time
touch
Displays file contents
type
Unloads a UEFI driver
unload
Displays UEFI Firmware version information
ver
Displays or changes a file system volume label
vol
Turn on/off extended character features
xchar
Drive paths in UEFI
Devices in the server are represented by device paths in the UEFI shell. Each internal SAS drive
could be configured either as:
•
RAID mode
•
HBA (raw) mode
NOTE:
A SAS drive in RAID mode is identified by "Scsi" in the device path A SAS drive in HBA
mode is identified by "SAS" in the device path.
NOTE:
Unlike parallel SCSI, you cannot correlate UEFI device paths to internal SAS disk drive
bays with SAS regardless of RAID/HBA mode. The UEFI device paths currently do not contain any
information that could be used to determine the physical location of the drives.
Path example
Path format
Device
PcieRoot(0x30304352)/Pci(0x2,0x0)/
Pci(0x0,0x0)/Scsi(0x0,0x0)
UID
PCIe root bridge device path
node
(RAID mode)
PcieRoot(0x30304352)/Pci(0x2,0x0)/Pci(0x0,0x0)
/SAS(0x5000C500037688B9,0x0,0x1,NoTopology,
0,0,0,0x0)
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144 Utilities