2010-10-05 Colin Watson <cjwatson@ubuntu.com> * util/grub-mkconfig_lib.in (save_default_entry): Only set saved_entry if boot_once is unset. * util/grub.d/00_header.in: Set boot_once to "true" if there was a previous saved entry (i.e. grub-reboot).
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.