Originally Posted by gtso
When you say stock do you mean the unrooted one?
Sent from my SGH-T999 using xda app-developers app
When you first install safestrap recovery, and boot into it, it will stay very clearly that you're dealing with STOCK ROM (and recovery robot at the boot menu will be RED, not green). That means you're MUCKING WITH STOCK ROM, not a "copy" of a ROM (i.e. safestrap).
In order NOT to muck with stock ROM (i.e. live your life on the edge), you "backup" the stock ROM, create a ROM slot (probably 1, name it "mod test1 or whatever) restore your backup into it, and activate that so you from now on boot into the COPY of your ROM. Then you can flash, edit, distort, or multilate your ROM... and as long as you can get into safestrap recovery, you can simply reset the ROM slot by loading a backup, and you're back in 5 minutes. And your "stock ROM" (rooted, but unmodified) will stay UNTOUCHED.