Failed to find OslExecuteTransition

[ahmetabdi]

Windows 10 Pro, Version 1909, 18363.778

30GB USB formatted to FAT32

Contains F:\EFI\Boot\bootx64.efi from pre-compiled release

Seems to fail here:

umap/boot/main.c

Line 117 in c19878f

Print(L"Failed to find OslExecuteTransition\n");

umap.exe driver.sys
Failed to communicate with the mapper

Error happends on boot:

[btbd]

Thanks for letting me know. My 1909 VM is not the latest and I assumed the signature would not change. I'll push a fix later today.

[btbd]

@ahmetabdi I've just tested on the same Windows version (1909 build 18363.778) and on 1909 build 18363.815, and it is able to find the signature. Would you mind sending me your winload.efi?

[ahmetabdi]

@btbd Thanks for looking into it I will try a couple more times

Here is the winload.efi http://dl.free.fr/getfile.pl?file=/Cz6NWBFX

[ahmetabdi]

🤔 just reformatted the USB and now it's working 🤷‍♂️ sorry for the time waste

[nerded1337]

@btbd fast boot is the culprit in this case.

[btbd]

@nerded1337 Makes sense that fast startup would cause this. Thanks for letting me know.