Dual boot info here--> http://forum.xda-dev...t=dual+boot+x10 You will need xRecovery 1.0 though, NOT .3
sorry, thats only for stock rom 2.1 and stock rom CANNOT be .71
@OP, how advanced are you in Android developing?
If you can cope do this:
1. Make a nandroid backup using xRecovery
2. convert it to ext2, ext3, ext4, nfts or whatever that is supported by your kernel. [my advice would be ext2]
3. Using zdzihu's dualboot
replace the system and data ext2 images.
4. flash it.
6. profit !!!
ifs its too advanced, then don't try it . otherwise ... GL mate, you'll need to reflash if the simplist things go wrong. also, make sure you got enough space in your ext2 images, but small enough so your system partition can cope ...