0db15301d1
* util/grub-mkconfig.in (GRUB_DISABLE_LINUX_RECOVERY): Export
variable.
* util/grub.d/10_linux.in: If GRUB_DISABLE_LINUX_RECOVERY is true,
don't write a menu entry for recovery mode.
All executable files in this directory are processed in shell expansion order. 00_*: Reserved for 00_header. 10_*: Native boot entries. 20_*: Third party apps (e.g. memtest86+). The number namespace in-between is configurable by system installer and/or administrator. For example, you can add an entry to boot another OS as 01_otheros, 11_otheros, etc, depending on the position you want it to occupy in the menu; and then adjust the default setting via /etc/default/grub.