From a75a08b69154e305fafad921908cd7d1f88df720 Mon Sep 17 00:00:00 2001 From: Mateusz Maciejewski Date: Thu, 18 Sep 2025 12:52:52 +0200 Subject: [PATCH] README.md: Boot Guard CAUTION section added to Standalone part. Warning against using smbios subcommand on btg provisioned images. Signed-off-by: Mateusz Maciejewski --- README.md | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/README.md b/README.md index 82d79f3..65560ee 100644 --- a/README.md +++ b/README.md @@ -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