I have a newly-rooted Droid 2, and I had intended to remove those annoying pre-installed apps that love to run in the background for no reason. I understand that doing this is not initially possible even post-root because /system is read-only. I have been googling and attempting to change this for hours with no success.
In ADB, I enter the following command: "mount -o remount,rw -t ext3 /dev/block/mmcblk1p21 /system". I have tried changing the command slightly and still get no result. For example, inputting "rm com.amazon.mp3 /system/app" after the attempted mount just returns "rm failed for com.amazon.mp3, Read-only file system".
Is the command itself wrong or am I using ADB incorrectly? Is USB debugging always required in order to input these commands with success? For whatever reason I cannot get the USB debugging to remain activated while in PC Mode, only Charge Mode. I couldn't even get SU privileges within ADB from Charge Mode initially; I had to switch to PC Mode in order to see the SU notification on my phone. Now I'm unsure which mode to leave it in.
I'm new to all of this stuff, so sorry if these questions are basic. My phone has been rooted for hours and I haven't managed to remove a single app... let alone do anything else.