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
009.04.91.11. What are some best practices for configuring GRUB2 to ensure system stability and security? How can administrators mitigate risks when making changes to the GRUB2 configuration, and what steps should be taken to recover from potential boot issues caused by misconfigurations?
Here are some ways to ensure system stability and integrity :-
Scripting:- It enhances the flexibility and configurability of the boot process. Certain custom scripts can be written to prevent any misconfiguration.
There are also certain security enhancements to protect the boot process in grub2 such as secure boot entries i.e. when you try to disable the secure boot option, it asks for the password provided by the user. Every boot entry is password protected and uses digital signatures to verify the integrity of boot modules.
Other prevention that can be taken is commenting the code changes in the configuration file, so as they can be referred to for later use.
