I have installed Debian LINUX and updated grub to install to /dev/sda (NETAC SSD)
After completing installation and reboot, the Lapbook Pro keeps going back into BIOS.
In ‘Save & Exit’ → Boot Override section, I cannot see my OS - only ‘Windows - Push Button Reset’ is listed, but that does not really exist.
In 'Security" → “P1:Netac SSD 256GB” - I can see ‘Security Frozen: Yes’ and ‘HDD Master Pwd Status: INSTALLED’
I can confirm I did not set any password or anything like that.
How do I fix this? What are the correct bios settings to use? Do i need to reflash bios E.G140J.D8.E1.016 ?
Yes this definitely sounds like a secure-boot issue. As Orion has said use legacy boot. Usually when major Linux distros install, one of the questions they ask during install is if you want to disable secure boot.
Once you boot into BIOS, look at the Boot Order. You will see a Windows bootloader in there; the GRUB one may be lower numerically in order, so when the system tries to boot Windows (That bootloader will remain) it looks for Windows on the target disk, does not find it and defaults to BIOS. If that is not the case, did you install Linux with Secure Boot disabled? If not the Linux installer may have installed the OS, but when it tried to write a GRUB entry in the MBR it could not as secure was still active. Do you recall if the installer asked you if you wanted to disable Secure Boot?