I tried to install Ubuntu 25.04 on my desktop; the installation process seemed successfully completed, but when the system restarted, a screen appeared reciting:
GRUB loading:
error: unkown filesystem
grub rescue>
I tried to run the command ls (hd//)/ on all partitions and disks detected by the system, but nothing, same error.
In the PC bios I tried to disable the CSM, Fastboot and SecureBoot, but nothing, it always comes back this infamous black screen...
I’m new to the Linux ecosystem, and don’t know what to do to use the system properly.
