acronis 2017 uefi

[NiKiZe]

It might be a good idea to verify that the files are valid,
also test with imgstat and shell before boot - this will show the files downloaded, and their size, please verify that they are correct.

the kernel output shows us that it can't find any root fs - this means that something is wrong with the initrds, or how they are (not) found or parsed correctly by the kernel.

It might be worth a extra check to start the original in uefi mode, and do cat /proc/cmdline as was done to get that line in the documentation, just to be sure nothing is missed or changed in newer versions.