[Q] Getting past the "Read-only file system"
Ultimately... All I'm trying to do is put my custom ringtone on the internal memory so that it still plays correctly when the sd card is connected to my computer. (Though I certainly wouldn't mind removing the obnoxious "boot_att.ogg" file as well.) But I keep getting thwarted. First by the discovery that there's no /home directory (which kind of weirds me out, but that's a whole 'nother story).
Anyway, my phone is rooted with z4root, and I'm trying to do this by two different methods. [Correction: It would be better to say that I've tried this using two different programs
] I've tried using "adb shell," and I've tried using "Android Terminal Emulator"
. I can successfully use su in both of them (but if I can't rewrite anything, then I don't see what the difference is). Then I go to the directory on my sd card where the cell ring is and I type
cp cell\ ring.mp3 /system/media/audio/ringtones/
And it replies
cp: /system/media/audio/ringtones/cell ring.mp3: Read-only file system
So, I found these instructions
that say to use "mount -o rw,remount -t yaffs2 /dev/block/mtdblock3" (though I think it needs to be "mtdblock7" for mine) or "mount -o rw,remount -t rootfs /" But when I do either of those, it returns
Usage: mount [-r] [-w] [-o options] [-t type] device directory
Which I take to mean that the "mount" command isn't being used correctly (and my experience with the mount command on desktop bash is limited, so I don't have any clue how to correct it).
It's worth noting that I have the exact same results in both adb shell and Android Terminal Emulator.
So, I found another thread (I think one on XDA) that said that I need to be in recovery mode to write to /system, which kind of makes sense. But I have no clue how to do that. And Google is not helping. The only instructions I could find said to turn the phone off and hold down the camera and volume up button. Which did nothing. And it's a good thing nobody was watching because I'm sure I looked like an idiot.
So... I guess I'll have to ask, how do I get into recovery mode? But at this point, I keep coming across so many absurd things keeping me from this that I wouldn't be surprised if next I get an error.
Therefore, my question is this: Is there a way to get into recovery mode, or, alternatively, is there a way to keep my ringtone working even while my sd card is connected to my computer?