User Guide

24 Intel
®
System Configuration Utility – User Guide
table. The command is supported for Linux*, Windows* and UEFI environment.
Command
Description
/bvar create
This command creates a new EFI variable.
The parameters that “create” command takes are as
follows –
 Name: name of the EFI variable that to be created
 GUID: GUID of the EFI variables
 Data: Data for the variable
 Attributes: Attribute is optional while creating, if not
provided it will take an attribute value of 7
The command will be successful when the command is
executed successfully and the variable is created.
However if a variable with the same name and GUID is
already existing, utility will provide appropriate
message.
/bvar overwrite
This command will overwrite the data value of an
existing EFI variable. Following are the parameters
passed to this command –
Name: Name of the existing variable
GUID: Optional, however if the name is not unique then
the utility will provide message for providing GUID as an
additional parameter.
Data: Data that are to be overwritten
/bvar delete
This command will delete an existing EFI variable. The
parameters passed are as follows –
Name: Name of variable
GUID: Optional and needed if name is not unique
Note:
1. Caution should be taken before deleting any EFI variable or rewrite the data of an
existing variable. If done wrongly this may lead to the system be unstable.
2. The attributes 0, 1, 2, 4, 5 and 6 are not supported with this switch.
3. The supported attributes are 3 and 7
Attributes
Description.
3
Non-Volatile(NV) + Boot Service Access(BS)
7
Non-Volatile(NV) + Boot Service Access(BS) + Real
Time(RT)
Examples:
syscfg /bvar create testvar 33838512-0BC7-4ba4-98C0-0219C2B61BF9 testvardata
syscfg /bvar create testvar 33838512-0BC7-4ba4-98C0-0219C2B61BF9 testvardata 3
syscfg /bvar overwrite testvar testvarnewdata
syscfg /bvar delete testvar
On S1400/S1600/S2400/S2600/S4600 platform series.
1. When BIOS administrator password is set and it value is “admin@123”
syscfg /bvar “admin@123” create testvar 33838512-0BC7-4ba4-98C0-0219C2B61BF9
testvardata
syscfg /bvar “admin@123” create testvar 33838512-0BC7-4ba4-98C0-0219C2B61BF9
testvardata 3