Hi David, > > AIUI Windows 11 still works, so the notebook computer is not bricked; > but it no longer plays nice with dual-boot Windows 11 and Debian on the > NVMe drive. >
Yes, as Debian can not be booted any more, due to the wrong UUID of the root device. > > I am curious if and what the Windows 11 update did to the notebook > computer firmware and/or NVRAM settings. It would be helpful to know > the Microsoft Knowledge Base number(s) for the update(s). > > It overwrote the BIOS setting from AHCI to RAID and let this menu point disappear in the BIOS. > It seems the notebook came with AMI firmware, but the OP replaced it > with alternate firmware: > > https://www.insyde.com/products > NOPE, it came original with INSYDEH20 BIOS, NOT an AMI BIOS. > > If the OP did change the firmware, I am curious if InsydeH2O® UEFI BIOS > is supported on that specific manufacturer and model notebook computer, > how the OP obtained InsydeH2O® UEFI BIOS, how the OP installed it, and > if the OP knows how to reinstall the original firmware. > Nope, it is factory original. > > If I want to boot my Dell Precision 3630 (UEFI-only firmware) using a > USB flash drive containing: > > debian-11.6.0-amd64-netinst.iso > Tried this, but no success. > Or boot a SATA SSD or a USB flash drive containing a working Debian UEFI > instance, I must enter the firmware Setup utility, create a boot entry > for the specific instance, and move the entry to the top of the boot > order. It is unclear if the OP's notebook computer requires similar > steps or if the OP attempted them. > Nope, tried this, too. No success. > > David Thanks for help, David! Best regards Hans