009 Embedded Linux-ARM. StorageQueries and discussion related to usage of Linux on ARM based devices. Linux has been ported to a variety of CPUs which are not only primarily used as the processor of a desktop or server computer, but also ARM, AVR32, ETRAX CRIS, FR-V, H8300, IP7000, m68k, MIPS, mn10300, SuperH, and Xtensa processors, It is also used as an alternative to using a proprietary operating system and toolchain. » 009.04.Boot Loaders
009.04.91.15. How do you approach troubleshooting common GRUB2 issues such as boot failures, missing menus, or kernel panics? Can you walk through the initial diagnostic steps you would take when encountering such problems, including identifying error messages, checking for recent changes, and accessing the GRUB2 command line for further diagnostics?
The common error messages displayed are:- "error: no such partition" or "kernel panic" or there are certain scenarios where the system directly boots into a rescue mode.
Here are the initial diagnostic steps :-
Identifying error messages: Noting any specific GRUB error messages can provide significant clues to the nature of the issue.
Checking for recent changes: try recalling any recent change made to the system's configuration, including new software installations, updates, or changes to GRUB2's configuration files.
Access GRUB2 Command Line: If the GRUB menu is accessible, entering the command line mode can allow for further diagnostics and repairs.
