Estos son algunos ejercicios que sirven de ejemplo para lograr el Dualboot sin embargo segun lo poco que entiendo, CM quedaria siempre como Rom secundaria??
Alguien se anima a explicar los pasos...
Exercise I
An example current facts:
ROM: Samsung stock JB 4.1.2
Kernel: blackhawk single kernel
Recovery: PhilZ Touch prior version
Prerequisites step:
Update your kernel to blackhawk's NEXT kernel
Update your recovery to the latest PhilZ Touch - blackhawk repack version - recovery
Download CM latest nightly + GApps zip
~2GB free on internal storage
Dual boot step:
Reboot into recovery
Flash blackhawk's NEXT tool, create system.img for CM/CM based ROM and then close it
Reboot into secondary recovery, make sure you choose "Secondary Recovery"! Make sure you really choose "Secondary Recovery"!!
Flash CM
Flash GApps zip
Reflash blackhawk's NEXT kernel
Reboot into secondary ROM - CyanogenMod!
It's always better if you make a backup before performing all above steps. Do it at your own risk!
Exercise II
An example current facts:
ROM: CM 10.1 latest nightly
Kernel: blackhawk single kernel
Recovery: PhilZ Touch prior version
Have Samsung stock 4.1.2 nandroid backup
Prerequisites step:
Update your kernel to blackhawk's NEXT kernel
Update your recovery to the latest PhilZ Touch - blackhawk repack version - recovery
Nandroid backup your current CM 10.1 ROM
~2GB free on internal storage. I am not sure, depend on your backup data size
CM 10.1 as 2nd ROM:
Reboot into recovery
Flash blackhawk's NEXT tool, create system.img for CM/CM based ROM and then close it
Reboot into secondary recovery, make sure you choose "Secondary Recovery"! Make sure you really choose "Secondary Recovery"!!
Restore CM 10.1 nandroid backup
Format /cache, clean dalvik-cache
Reflash blackhawk's NEXT kernel
Reboot into secondary ROM - CyanogenMod!
Samsung 4.1.2 as 1st ROM:
Reboot into primary recovery, make sure you choose "Primary Recovery"! Make sure you really choose "Primary Recovery"!!
Restore Samsung stock 4.1.2 nandroid backup
Format /cache, clean dalvik-cache
Reflash blackhawk's NEXT kernel
Reboot into primary ROM - Samsung!