Hi All,
As an update, I now have dual boot working on the Sam 460CR with MorphOS 3.8 and AmigaOS 4.1 Final Edition. More details on my blog here:
http://amigax1000.blogspot.com.au/2015/05/dual-boot-amigaos-41-fe-and-morphos-38.html
I hope this is interesting - I was so glad to get it working!
Catcha,
Epsilon