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README.md: Boot Guard CAUTION section added to Standalone part.

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Warning against using smbios subcommand on btg provisioned images.

Signed-off-by: Mateusz Maciejewski <mateusz.maciejewski@3mdeb.com>
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Mateusz Maciejewski
2025-09-18 12:52:52 +02:00
parent 6d42324cc0
commit a75a08b691
1 changed files with 6 additions and 0 deletions
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README.md
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@@ -105,6 +105,12 @@ This is a [known issue](https://github.com/Dasharo/dcu/issues/17).
The script will save the UUID and Serial Number to the COREBOOT region and the
logo to BOOTSPLASH region.
CAUTION: Using `smbios` subcommand to modify SMBIOS data in a firmware image is
allowed only on images without Boot Guard provisioning. Official Dasharo images
containing Boot Guard provisioning are marked with `_btg_provisioned` image file
name portion. Flashing `_btg_provisioned` image with modified SMBIOS data will
make the platform unusable & will require an external flashing recovery procedure.
NOTE: Not all Dasharo platform support such customizations.
NOTE: if you update the firmware by rewriting whole BIOS region, the data will