Hello, all!
I'm trying edit a file in /etc/ and adb says 'Failed to copy: Read-only filesystem'
Now, is this actually true? Or is this simply a permissions issue? I'm doing this on a non-rooted phone, so I can't 'touch' anything without permission errors, but is it a futile task if the filesystem is read only anyway?
I'm trying to do this from a non-rooted environment as I had intended on making this into an application, but I imagine that if I can't touch or push these files from an adb shell then I won't be able to from the application space either.
It's frustrating not to be able to edit the filesystem of my own phone, I'll be rooting if this is just a permissions problem and not an issue of a non-writable filesystem. Perhaps I could still make an application for rooted-only phones.. hrm..
Any thoughts on this?
/etc is an alias for /system/etc, and /system is a partition mounted as ro (you can confirm this yourself by running mount)
Ah, bugger. So this is hopeless (without modifying and then reflashing)?
Thanks very much.
you need to mount it read write,
mount -oremount,rw /dev/block/mtdblock3 /system
then it will be read/write
try adb remount. if it failes you need root sorry.
Hello, i have the same error and I have root. i have tried adb remount and the mount -oremount,rw /dev/block/mtdblock3 /system
still dotn work. I want to move a script to /
so i only have to type sh debian.sh
nvm I figured it out. i just put it on system and then just type sh debian.sh on the terminal and it works
Rafase282 said:
Hello, i have the same error and I have root. i have tried adb remount and the mount -oremount,rw /dev/block/mtdblock3 /system
still dotn work. I want to move a script to /
so i only have to type sh debian.sh
Click to expand...
Click to collapse
what is the error message? saying it dont work doesnt provide enough info for us to help....
it says sh: cant open aw.sh
so i still have to put the path or cd to where the file is. Is there a way to make /system my home?
no you cant make system your home, system is system, home is home. you can make a symlink if you are familiar with linux - might want to read up about shell commands
korndub said:
you need to mount it read write,
mount -oremount,rw /dev/block/mtdblock3 /system
then it will be read/write
Click to expand...
Click to collapse
Thanks it really worked!! for me i had the same problem as the other guy.
Rafase282 said:
Hello, i have the same error and I have root. i have tried adb remount and the mount -oremount,rw /dev/block/mtdblock3 /system
still dotn work. I want to move a script to /
so i only have to type sh debian.sh
nvm I figured it out. i just put it on system and then just type sh debian.sh on the terminal and it works
Click to expand...
Click to collapse
You *CAN'T* modify the / filesystem. It is part of your BOOT partition, which CANNOT be remounted rw. You would have to read, modify, and write the boot partition.
Rafase282 said:
Hello, i have the same error and I have root. i have tried adb remount and the mount -oremount,rw /dev/block/mtdblock3 /system
still dotn work. I want to move a script to /
so i only have to type sh debian.sh
nvm I figured it out. i just put it on system and then just type sh debian.sh on the terminal and it works
Click to expand...
Click to collapse
Maybe you're typing it in too literally. It should actually read like this:
mount -o remount,rw /dev/block/mtdblock3 /system
There was a typo with -oremount, there should be a space after -o.
Hope that helps.
PS. That command worked for me on a device where everything else failed.
dhkr123 said:
You *CAN'T* modify the / filesystem. It is part of your BOOT partition, which CANNOT be remounted rw. You would have to read, modify, and write the boot partition.
Click to expand...
Click to collapse
actually, / can be mounted rw, but changes are lost on reboot
new user
Firerat said:
actually, / can be mounted rw, but changes are lost on reboot
Click to expand...
Click to collapse
Hi I have my Asus Prime rooted and installed a virtuous Rom and I tried to put a fonts on the System/ fonts folder using root explorer using a instructions to fix some error on some games that need that tis fonts exist on the tablet but it said it cant because file system is read only I'm new and I don't know how to do this commands any help on how to do in a easy (explained) form.
egalpr said:
Hi I have my Asus Prime rooted and installed a virtuous Rom and I tried to put a fonts on the System/ fonts folder using root explorer using a instructions to fix some error on some games that need that tis fonts exist on the tablet but it said it cant because file system is read only I'm new and I don't know how to do this commands any help on how to do in a easy (explained) form.
Click to expand...
Click to collapse
I would recommended not posting in the g1 section. The Asus forums would be a lot more helpful.
egalpr said:
Hi I have my Asus Prime rooted and installed a virtuous Rom and I tried to put a fonts on the System/ fonts folder using root explorer using a instructions to fix some error on some games that need that tis fonts exist on the tablet but it said it cant because file system is read only I'm new and I don't know how to do this commands any help on how to do in a easy (explained) form.
Click to expand...
Click to collapse
Download EStrong File Manager and within the settings of it, enable mounting of the system as read/write.
Or, download Terminal Emulator and type this in:
Code:
mount -o remount,rw /dev/block/mtdblock3 /system
Or, try typing this in terminal/cmd:
Code:
adb remount
Or, if you plan on doing it all from recovery you could do:
Code:
adb shell "mount system"
and then you could do it all from there.
Next time, please post in the proper forum.
Read-Only /system... i just deleted the file, tich push should update/replace and then it worked... only had this bug when i was trying to modify Trebuchet.apk (homescreen)
Hi guys
Not being a linux expert, i'm stuck with the following problem..
i'm using a program who uses low level adb commands to write on the phone extSdCard...
problem: this extSdcard is seen as a readonly filesystem.
What has to be done to make this FS RW instaed of RO ?
This does not happen under windows where I can write to the extSd without problems
thks in advance for the tip
Related
I would like to set my phone to europe.pool.ntp.org becouse it's default northamerica.pool.ntp.org
How can I edit this file ? When I try to type adb shell to terminal it gives me an error message.
Thanks
Not development related moved to General
At first U must root R phone and then install Root Explorer. After that go to SYSTEM/ETC/
Here u need to edit GPS.CONF file and change NTP Server from northamerica.pool.ntp.org to europe.pool.ntp.org.
I hope that I help U m8.
Get write acces in system folder
I used the post I've quoted down here. After you have gained write acces in the system folder you can edit gps.conf!
octy said:
By default the /system is mounted in read-only mode.
With 'root' access you can change this.
First 'root' your phone with tutorial 'slumpolo' has provided at
the begining of this thread.
Then open a shell on your phone with adb
Code:
adb shell
Grant 'root' access with 'su' command and have a look of memory partitions
Code:
su
mount
In 'mount' command output, identify the partition on which /system was mounted.
In my phone it was '/dev/block/stl6'
Finally you can remount it to get read-write permissions on it.
But before be sure to be outside /system in the shell (by typing 'cd /' for example).
Code:
mount -o remount,rw /dev/block/stl6 /system
Do the modification you want..... BECAREFUL of want you do, you can damage your phone.
Set read-only mode again
Code:
mount -o remount,ro /dev/block/stl6 /system
Sorry I cannot made any snapshot for the moment, I can't use my phone.
Hope it can help you.
Click to expand...
Click to collapse
By the way, for Slovakia I think you can better change to sk.pool.ntp.org
Complete list of European NTP servers:
http://www.pool.ntp.org/zone/europe
Other area's:
http://support.ntp.org/bin/view/Servers/NTPPoolServers
LeoApollo said:
By the way, for Slovakia I think you can better change to sk.pool.ntp.org
Complete list of European NTP servers:
http://www.pool.ntp.org/zone/europe
Other area's:
http://support.ntp.org/bin/view/Servers/NTPPoolServers
Click to expand...
Click to collapse
I see, probably I can use also CZ, HU, AT, DE or SK or EU .. I've red that the best is with more sites.
"After you have gained write acces " How can I gain write access ? I have rooted - but Adb shell doesn't work, did I missed something ? Thaks
nastyba said:
"After you have gained write acces " How can I gain write access ? I have rooted - but Adb shell doesn't work, did I missed something ? Thaks
Click to expand...
Click to collapse
i think yes adb is for the PC. it is part of the android sdk tools.
i did that on my desire (it should be same) but i have problem i edit and save file and now i cant see it
i can see that backup file but how do i restore it?
i tried create new file it wont work i cant see it (it says file created sucessfuly)
aantdesign said:
At first U must root R phone and then install Root Explorer. After that go to SYSTEM/ETC/
Here u need to edit GPS.CONF file and change NTP Server from northamerica.pool.ntp.org to europe.pool.ntp.org.
I hope that I help U m8.
Click to expand...
Click to collapse
U can use adb on Win or linux or qtadb.
Give these commands on adb shell..
su
mount -o remount,rw /dev/block/stl6 /system
exit
exit
adb pull /system/etc/gps.conf
Edit the gps.conf the way u like.
Then mount again in rw mode.
adb push gps.conf /system/etc/gps.conf
adb reboot
Done.
moved
new post @sgs2
nastyba said:
I would like to set my phone to europe.pool.ntp.org becouse it's default northamerica.pool.ntp.org
How can I edit this file ? When I try to type adb shell to terminal it gives me an error message.
Thanks
Not development related moved to General
Click to expand...
Click to collapse
U can use the apo "FasterFix" from market.
arunmcops said:
U can use the apo "FasterFix" from market.
Click to expand...
Click to collapse
Thanks for the tip much easier to change with this application done in seconds
I have a few general questions for using adb, and also a related problem (which got me asking those questions).
Any help would be great.
1. when remounting which is the actual directory and which is the virtual one?
mount -o rw,remount dirA dirB
2. Is it possible to mount/remount several paths to the same virtual path? If so what happens when there are conflicts (directories or files with the same name)?
3. Is 'push' any different from just copying a file to the phone via USB?
Other than those questions I have a more specific one:
I'm trying to push a file into /system/app/ and /system/lib/ but I get a message that the directory is read-only.
I ran 'adb root' and then entered the shell, remounted this way:
'mount -o rw,remount /dev/block/mtdblock3 /system'
It seemed to work (I just got the command echoed back to me with no error messages).
But still I got read-only when trying to push.
The remount does not appear anywhere when I check mounts. Also mtdblock3 does not even appear in /dev/block/.
I can see that there is an rw mount for '/dev/block/stl9 /system' in the mounts - could it be that for SGS stl9 is the block to use instead of mtdblock3?
If so then why can't I push the file (since it's already mounted as rw).
Sorry for all the questions but I'm new to adb.
I'm using SGS GT-I9000 running 2.2.1 based rom with lag-fix (system is ext4)
yuv1 said:
3. Is 'push' any different from just copying a file to the phone via USB?
Click to expand...
Click to collapse
Adb push can push to more than just the sdcard.
It can also push to internal memory
Sent from my HTC Vision using XDA App
Hi all--in need of some help here--have been crusing the forums for three days and still hitting a brick wall...
Have a rooted (and minimally modded) Atrix 4g in serious need of a hard reset and all the pain that comes with as nearly every app force closes on startup.
Hoping to backup some of my data (contacts, SMS, etc), but unable to do so my usual way (an app, root explorer, or the like), so I'm attempting to use ADB pull to grab the .db files. I'm relatively comfortable with linux, but running into a problem with ro/rw permissions (I think).
have tried the following:
adb pull /data/...../mmssms.db (yields Permission Denied)
# cp /data/....mmssms.db (appears to copy, but no file in destination, and can't copy out of shell)
have been able to remount /system as rw, but not /data where the files are located.
Anybody have suggestions? I'd be most apprecative!
Copy the the files as superuser to your sdcard first and adb pull them from there.
Unfortunately, the whole reason I'm needing to reset is that every app (incl superuser accesses) force closes on start--no chance to move through the phone itself. Since the .db files are not in the usb-accessible file structure I'm thinking that ADB is the only way to access.
Does that make sense?
Hi, OP here--anybody else have a suggestion? Getting a little desperate here... Any thoughts would really be appreciated!
im assuming your accessing ADB via recovery?
You should be able to use su without superuser.apk's permission in that case - however, theoretically, you should not need to use su in recovery anyway.
you can try running
Code:
adb shell ls -l /data/data/*tele*/databases/mmssms.db
and see what you get permissions wise, maybe a chmod could fix it?
Otherwise you could try
Code:
adb shell mount -o remount,rw /data
Another alternative to cp and adb pull is cat
Code:
adb shell cat /path/to/mmssms.db > /path/to/destination-file.db
might copy remote mmssms.db to a local file, while
Code:
adb shell
cat /path/to/mmssms.db > /path/to/destination-file.db
exit
would copy remote to remote
Is /data mounted at all?
This is strange, you should have read access to everything, especially in recovery.
What phone and what recovery?
Its not something as simple as geting the URIs the wrong war round ('cmd local remote' vs 'cmd remote local')?
So, still tinkering... Will give it one last try before I call it quits and just wipe the bloody thing. So, your thoughts were spot on--its probably me missing something.
Quick data dump on progress to data:
Phone: Rooted Motorola Atrix running 2.2
no trouble accessing shell or via ADB
/data is mounted, though only in Read Only mode--can't seem to change, have tried several ways in various modes (shell, su, etc)
Permissions for mmssms.db are: -rw-rw---- radio radio
chmod 777 of the file yields: "Read-only file system," which makes sense since I can't seem to change /data... to rw
Tried to remount rw:
adb shell mount -o remount,rw /data
and
mount -o remount,rw -t yaffs2 /dev/block/mmcblk0p11 /system (for systeem
but get "Operation not permitted" in both cases.... UGH!
Hadn't thought of cat--great idea. Still no real joy however.
I seem to have managed a copy to /system, but can't seem to get it off the device or onto the SD card.
Thanks much for your help so far. Any final thoughts?
SO CLOSE!!!! (and yet...)
crags said:
Hadn't thought of cat--great idea. Still no real joy however.
I seem to have managed a copy to /system, but can't seem to get it off the device or onto the SD card.
Click to expand...
Click to collapse
SO FRUSTRATING!!!! so close, but not quite there--HELP!!!
As noted at the end above, have been able to copy the mmssms.db file to /system/ after remounting as RW
Can't seem to copy or pull off the device--still getting "Permission Denied" no matter which course I try!?!?!
It sounds as if your doing this while booted into the ROM, and (maybe) without su (root)?
su-ing might help, just type su and hit return to enter a root shell
alternatively, going in through recovery ('adb shell reboot recovery') might help as most recoveries ignore permission rules - make sure to mount the partitions your using though.
It almost sounds like the sdcard has no write permissions - you can get the NAND partitions to mount rw, but cant copy to the sdcard.
On my Desire, there is (at least) two mount points: /sdcard and /mnt/sdcard - maybe on your phone only one of your mount points has write permissions?
Otherwise i suggest going in via recovery. You can still use adb (will have to manually mount - 'mount /system' 'mount /date' and 'mount /sdcard' usually work, otherwise use the menu item in recovery )
When in recovery, and after mounting partitions/card, try adb pull, cp /sdcard and cat > sdcard (and if possible cat > computer) plus anything else i forgot (quite tired )
if these dont work something is messed up somewhere in the ROM, or likely kernel and so without ideas a reflash would be the only real solution :/
I did have a bare-minimum+apps recovery script (attached) which might be worth a read to see if your forgetting something obvious - it works on my desire
Hi, this is a blatant crosspost from the android stackexchange site, questions/24081... I posted it there and figured I wouldn't get much help, so I thought I'd try here. Let me know if this is OT or in the wrong place or whatever.
I want to remount a read-only partition in read-write mode, but I want it to be writable for all users.
So far I've got this:
Code:
mount -o bind /someplace /someplace_else
mount -o remount rw /someplace_else
The first command creates a new mount point from a directory. The second one remounts the new mount point as rewritable. This all works.
Problem is, the new mount point has uid=1000,fmask=0222,dmask=0222, so the non-root user still can't write anything, and root can't give it permission.
How do I change the fmask and uid when remounting, or is there something else I can do to make the mount writable for the normal user?
Also, note that the command that worked for me is this:
Code:
mount -o remount rw /someplace_else
...with no comma between "remount" and "rw," as I've seen in almost everything my searches turned up. Does anyone know anything about this discrepancy in syntax?
I'm doing most of this in a terminal emulator on the phone, and in SL4A.
Yes, my phone is a chinese Hero H2000+.
I have managed to stick su and busybox into /system/bin using debugfs, but there's absolutely no way I could find to make /system get into read-write mode.
If I type "mount -o rw,remount /system" it seems to work for about 1 second, but then it's remounted read-only. All the changes will be reverted (files I add/remove via script). If I try to run the same command again, it will show me a message saying filesystem is read only.
Does anyone know what might be causing this?
Thanks in advance.