How to reboot into recovery (ROM Mgr. Won't)

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http://androidforums.com – The recent update to ROM Manager has now caused my rooted stock SIII to not be able to boot into Recovery (from ROM Manager). It just hangs. What is the procedure to manually boot to recovery on a rooted stock SIII? OK, for now I managed to restore an older version of ROM Manager with TIBU, and am rebooting into Recovery now. But I would like to know any other way of doing so without using ROM Mgr. (General)