persist custom data in NVRAM
My requirement is that I need to write some custom application data (that I currently store in a file) to NVRAM for persistence during imaging on Windows 10. How to achieve this?
Note: By using SetFirmwareEnvironmentVariable() API with firmware environment variable name as "myVar", I am able to store the data(tested till 10KB). Can I use this approach and what is the max data that can be stored in a variable?
visual-c++ windows-10 uefi
asked Nov 21 '18 at 10:58
RaghuRaghu
24115
add a comment |
My requirement is that I need to write some custom application data (that I currently store in a file) to NVRAM for persistence during imaging on Windows 10. How to achieve this?
Note: By using SetFirmwareEnvironmentVariable() API with firmware environment variable name as "myVar", I am able to store the data(tested till 10KB). Can I use this approach and what is the max data that can be stored in a variable?
visual-c++ windows-10 uefi
asked Nov 21 '18 at 10:58
RaghuRaghu
24115
add a comment |
My requirement is that I need to write some custom application data (that I currently store in a file) to NVRAM for persistence during imaging on Windows 10. How to achieve this?
Note: By using SetFirmwareEnvironmentVariable() API with firmware environment variable name as "myVar", I am able to store the data(tested till 10KB). Can I use this approach and what is the max data that can be stored in a variable?
visual-c++ windows-10 uefi
asked Nov 21 '18 at 10:58
RaghuRaghu
24115
My requirement is that I need to write some custom application data (that I currently store in a file) to NVRAM for persistence during imaging on Windows 10. How to achieve this?
Note: By using SetFirmwareEnvironmentVariable() API with firmware environment variable name as "myVar", I am able to store the data(tested till 10KB). Can I use this approach and what is the max data that can be stored in a variable?
visual-c++ windows-10 uefi
visual-c++ windows-10 uefi
asked Nov 21 '18 at 10:58
RaghuRaghu
24115
asked Nov 21 '18 at 10:58
RaghuRaghu
24115
edited Nov 21 '18 at 13:10
Raghu
asked Nov 21 '18 at 10:58
RaghuRaghu
24115
asked Nov 21 '18 at 10:58
RaghuRaghu
24115
asked Nov 21 '18 at 10:58
RaghuRaghu
24115
24115
add a comment |
add a comment |
1 Answer
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The NVRAM variables can be created using these Windows API. The created variables can be viewed using EFI shell command 'dmpstore'. Following link explains on how to create a bootable EFI shell.
https://github.com/tianocore/edk2/raw/master/ShellBinPkg/UefiShell/X64/Shell.efi
answered Dec 13 '18 at 5:46
RaghuRaghu
24115
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
The NVRAM variables can be created using these Windows API. The created variables can be viewed using EFI shell command 'dmpstore'. Following link explains on how to create a bootable EFI shell.
https://github.com/tianocore/edk2/raw/master/ShellBinPkg/UefiShell/X64/Shell.efi
answered Dec 13 '18 at 5:46
RaghuRaghu
24115
add a comment |
The NVRAM variables can be created using these Windows API. The created variables can be viewed using EFI shell command 'dmpstore'. Following link explains on how to create a bootable EFI shell.
https://github.com/tianocore/edk2/raw/master/ShellBinPkg/UefiShell/X64/Shell.efi
answered Dec 13 '18 at 5:46
RaghuRaghu
24115
add a comment |
The NVRAM variables can be created using these Windows API. The created variables can be viewed using EFI shell command 'dmpstore'. Following link explains on how to create a bootable EFI shell.
https://github.com/tianocore/edk2/raw/master/ShellBinPkg/UefiShell/X64/Shell.efi
answered Dec 13 '18 at 5:46
RaghuRaghu
24115
The NVRAM variables can be created using these Windows API. The created variables can be viewed using EFI shell command 'dmpstore'. Following link explains on how to create a bootable EFI shell.
https://github.com/tianocore/edk2/raw/master/ShellBinPkg/UefiShell/X64/Shell.efi
answered Dec 13 '18 at 5:46
RaghuRaghu
24115
answered Dec 13 '18 at 5:46
RaghuRaghu
24115
answered Dec 13 '18 at 5:46
RaghuRaghu
24115
answered Dec 13 '18 at 5:46
RaghuRaghu
24115
24115
add a comment |
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