Failing to upgrade Oracle Linux 7.9 to 8.10 via leapp

Leapp upgrade of Oracle Linux 7.9 to 8.10 fails and drops in emergency mode. This happens when I select EL8 kernel in grub menu. System seems to be working normally with EL7 kernel. Systems are virtualized in VMWare. While entering into emergency mode, this message appears: Warning: /dev/disk/by-uuid/XXXXX-XXXX-XXXXX-XXXX-XXXXX does not exist I tried to use /dev/sda3 instead, but it fails with same message, only it complains about /dev/sda3 missing. leapp preupgrade generated report has no inhibitors, but what puzzles me are these two high factor messages: Risk Factor: high Title: Leapp detected loaded kernel drivers which are no longer maintained in OL 8. Summary: The following OL 7 device drivers are no longer maintained OL 8: - mptbase - mptscsih - mptspi Key: d3dc36baebfba8ca1c73bbc031f4c8fa07bcfd6f ---------------------------------------- Risk Factor: high Title: GRUB core will be updated during upgrade Summary: On legacy (BIOS) systems, GRUB core (located in the gap between the MBR and the first partition) does not get automatically updated when GRUB is upgraded. Key: baa75fad370c42fd037481909201cde9495dacf4 ---------------------------------------- I somehow suspect the three modules to be the problem. On the other hand, when I run clean OL8 instance, install the kernel-modules package and load the modules, it works. Even when I add them into /etc/modules-load.d/ so they are loaded at boot. Do you have any ideas how to fix this? Tried to unload the modules and regenerate initramfs, still fails.