Thanks for the info's Marios mate
If I can make ABS work it would be a nice bootend for choosing OS3.9 or 4.1. I found a script here: -
That I will use otherwise.
I was just thinking the other day how it would be nice to have a tidy boot menu for choosing between OS 3.9 and 4.1 etc and possibly even softkicking OS4.1 Kickstart intelligently i.e, remembering the last reset had OS4.1's partition selected and keeping it that way for 1 warm reset period regardless of boot priority in Early Startup being set to OS 3.9. So that it doesn't try to boot OS 3.9 with a softkicked 4.1 ROM!
(Funnily enough, my OS 3.9 boots fine with Kick 4.1!!).