• After 15+ years, we've made a big change: Android Forums is now Early Bird Club. Learn more here.

help dual boot siyah s2

hi, i have an s2 (rooted), siyah, stock rom,
in stweaks i have options for two roms (i take it im currently taking one of those slots)
1.if i install a second rom does the one im currently using stay exactly the same(apps,settings etc.)
2.how do you install the second rom into the second rom slot(im thinking about cyangemod(if thats how its spelt)
edit-how much gb/mb would this take up and would it slow my phone having two ?
also whats the difference between stock and cm ? *how do you transfer apps and save data from 1st rom to 2nd rom
 
Back
Top Bottom