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Operation Procedure
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3.5.3. EFI Shell
The EFI Shell can be activated from the EFI Boot Manager. The EFI Shell provides Shell
commands for viewing the file system of the boot device, copying the file and various other
operations.
The following is an image of the EFI screen.
Image of the EFI screen
3.5.4. EFI Shell Commands
The shell commands that can be executed at the EFI Shell and their usage are explained in this
section. The EFI shell command is executed by entering the command and pressing the Enter
key.
EFI Shell Commands
Command Description
alias alias [-d|-v|-b] [sname]
[value]
Display/create/delete an alias definition in the
EFI Shell environment.
attrib attrib [+a|-a] [+s|-s] [+h|-h]
[+r|-r] [-b] [file ...]
[directory ...]
Display/change the file/directory attribute.
bcfg bcfg driver|boot [dump –v]
[add # file “desc”] [rm #] [mv
# #]
Display/change the driver/boot configuration.
break Break Run the debugger until the breakpoint is
reached.
Loading.: EFI Shell [Built-in]
EFI Shell version 1.10 [14.62]
Device mapping table
fs0 : Acpi(PNP0A03,3)/Pci(2|0)/Scsi(Pun0,Lun0)/HD(Part1,Sig0A7C0000)
blk0 : Acpi(PNP0A03,3)/Pci(2|0)/Scsi(Pun0,Lun0)
blk1 : Acpi(PNP0A03,3)/Pci(2|0)/Scsi(Pun0,Lun0)/HD(Part1,Sig0A7C0000)
blk2 : Acpi(PNP0A03,3)/Pci(2|0)/Scsi(Pun0,Lun0)/HD(Part2,Sig0A7C0000)
blk3 : Acpi(PNP0A03,0)/Pci(2|1)/Ata(Primary,Master)
Shell>
EFI shell prompt
List of disk
drives
recognized by
the system