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
009.04.91.42. Technical Detailing and Variable Management:
"Discuss the function and impact of the menu_show_once and menu_auto_hide variables within the 12_menu_auto_hide script. How do these variables interact to determine the boot menu's behavior, and what might be the implications of misconfiguration in this context?"
`menu_show_once`: Indicates whether the menu should be shown at least once more before being auto-hidden in subsequent boots. Implications: If this var is set, the script clears this variable, saves the change and sets longer timeout to ensure the menu is visible.
`menu_auto_hide` : Indicates whether the menu should be hidden automatically under normal circumstances based on previous boot success.
Implications: If this var is set and auto hide is enabled, the script decides on the visibility based on `fastboot` setting: Fast boot --- if it is enabled, it sets the menu to appear without delay (`timeout`=0), else the script sets the menu to be hidden with a brief timeout.