You will find interesting articles on booting processes, troubleshooting grub issues and password recovery here.

Fix Grub Filesystem Type Unknown Error On Centos / Redhat

Install GrubGrub Issue

LINUX TROUBLESHOOTING GRUB is GRand Unified Bootloader, the default bootloader for Linux kernel based Operating Systems. If you have a dual boot system, like Windows and Linux, then you may have some issues with GRUB. If you install Windows after [...]