Operating System Loader failed signature verification. WARNING: The file may have been tampered with
Humble
I've got a brand new Dell Precision 7730 that I was planning to install QubesOS on.
As soon as I attempt to start the boot sequence, I get this error:
Operating System Loader failed signature verification. WARNING: The file may have been tampered with
I've tried several OS-es and Ubuntu and ESXi boot just fine, with Xen and a couple more failing to do so.
Upgraded the bios and all that, still no go.
Unfortunately from what I understand this generation of laptops no longer accepts installations of OS-es in legacy mode.
I am looking forward for your thougths.
unman
Go into the BIOS (F2 on boot?)
Under Security, you can turn off TPM, which should allow you to boot
other OS.
You can also turn off Secure Boot.
I dont think that you are prohibited from legacy boot.
Have a look under the Advanced Boot options, and you may be able to
enable legacy boot there.
unman
humble...@gmail.com
Legacy boot is not prohibited, but is allowed only for external devices (USB, SD Card, PXE).
This is the KB article from Dell's official site and this appears to be the norm from now on for any Enterprise-grade Dell laptop.
https://www.dell.com/support/article/us/en/04/sln309720/newer-dell-systems-unable-to-boot-to-internal-boot-device-in-legacy-boot-mode?lang=en
Looking forward for any guidance.
unman
legacy mode from internal disk.
Try installing in UEFI mode.
humble...@gmail.com
.... Which doesn't work and it gives the error in the original post (Operating System Loader failed signature verification. WARNING: The file may have been tampered with) indicating that there are integrity checks that the current (and the 4.0.1-rc1) image are failing for the current generation of UEFI-enabled BIOS-es.
What is not clear in the above? UEFI doesn't work and Legacy isn't supported.