Why do you want it in ROM?
If you have OS3.9, I presume you have a hard drive? You can load workbench.library and icon.library to be boot resident from hard drive using LoadModule, and after that they will be there even if you boot from floppy, till you either remove them or power off.
It would just be nice to have it in ROM that's all, I never liked the idea of systemcritical files not being in ROM when 99% of the software assumes it is.
I'm setting up a multiboot A600 that boots into WB1.3, WB2.1, OS3.1 and OS3.9 but right now I have to do it manually since I can't just go on ROM version check alone... since all OS'es have their own partition it's no big issue having wb.lib on disk for 3.9 and since I can always switch OS in case a disk don't work propperly without wb.lib it's not critical, just a nice thing to have if possible.
