This is a quick tutorial I want to write up based on a recent experience I've had recently with my micro sd-card. (More info on that below)
This how to shows how to switch between the internal sd card and the external sd cards mounting points (so the external is accessed via /sdcard, and the internal is accessed through /eemc)
The nuts and bolts how to:
0. Perform backups on System, i am not responsible for any damages or boot loops.
1. Download root explorer (or any other file explorer with root privileges)
2. Go to /system/etc, and mount R/W
3. Long press on vold.fstab and select Open With... , select Text Editor
4. You will find a line with sdcard in it a few times, change this section:
dev_mount sdcard /mnt/sdcard
Click to expand...
Click to collapse
To:
dev_mount emmc /mnt/emmc
Click to expand...
Click to collapse
5. Do the same thing with the emmc section:
dev_mount emmc /mnt/emmc
Click to expand...
Click to collapse
To:
dev_mount sdcard /mnt/sdcard
Click to expand...
Click to collapse
6. But you just flipped the first section around? Yes I did, this changes the mounting points. But not the original location of where it is being mounted......
7. Please don't change anything else in this file....
8. Reboot, enjoy!
I had to do this hax because the current nightly of CM9 doesn't support there being no external sd card, and mine got corrupt (eep!), it then continued to mount the internal sd card location to emmc instead (wtf?). So i did this quick hax so i could take pictures with the stock camera and use several applications which just default to the internal sdcard (and doesn't allow changing that).
Hope that helps some random Googlers......
Note: This has only been tested on CM9 Nightly apr-9th on SGSII, but i see no reason for this not work across all ROMs and devices( with ICS, the emmc thing wasn't on GB and below i don't think) as long as you don't do anything as foolish as change more than the lines specified above.
An example of a swapped file is (DO NOT COPY AND PASTE THIS, YOU PROBABLY WONT BE ABLE TO BOOT):
# internal sdcard
dev_mount emmc /mnt/emmc 11 /devices/platform/dw_mmc/mmc_host/mmc0/mmc0 encryptable_
# external sdcard
dev_mount sdcard /mnt/sdcard auto /devices/platform/s3c-sdhci.2/mmc_host/mmc1
Click to expand...
Click to collapse
Please note that the latest CM9 nightlies lets you do this from the system menu! This was written pre that advancement. This is for the curious and other ROMs/phones.
Is it possible to use something in the lines of:
dev_mount emmc /mnt/external_sd ? To just bind the external sd to the stock location?
If I understood your question right, that's the default behavior in CM7/9 so you don't need to change anything.
(internal gets mounted as /sdcard and external as /emmc. At least that's how it always behaved on my device -takes a bit of getting used to but it's manageable once you know the trick)
edit : aw sawry, mistook /mnt/external_sd for /mnt/sdcard. But it changes nothing besides the name of the mountpoint, easily adjustable.. Although why you would want to have it named like that is beyond me, it makes for more keys to hit when typing it... xD
Zewsan said:
Is it possible to use something in the lines of:
dev_mount emmc /mnt/external_sd ? To just bind the external sd to the stock location?
Click to expand...
Click to collapse
same doubt raised here ...is it possible to mount external sdcard to /mnt/external_sd instead of mnt/emmc...???
please need solution
Zewsan said:
Is it possible to use something in the lines of:
dev_mount emmc /mnt/external_sd ? To just bind the external sd to the stock location?
Click to expand...
Click to collapse
Its the same technique....
So remember this:
Format: dev_mount <label> <mount_point> <part> <sysfs_path1...>
Click to expand...
Click to collapse
So <label> doesn't really matter, but we may as well keep it sane (and have it the same name as the mount point)! And <mount_point> is where its mounted. Make sure the folder exists first though! leave <part> and <sysfs_path*> alone and it will work correctly.
So if you were to create a folder /mnt/hammertime , then make a line look something like this (taken from my example in first post)
dev_mount hammertime /mnt/hammertime auto /devices/platform/s3c-sdhci.2/mmc_host/mmc1
Click to expand...
Click to collapse
That will work correctly.
Hope that helps!
mattisdada said:
Its the same technique....
So remember this:
So <label> doesn't really matter, but we may as well keep it sane (and have it the same name as the mount point)! And <mount_point> is where its mounted. Make sure the folder exists first though! leave <part> and <sysfs_path*> alone and it will work correctly.
So if you were to create a folder /mnt/hammertime , then make a line look something like this (taken from my example in first post)
That will work correctly.
Hope that helps!
Click to expand...
Click to collapse
is there no any requirement of changing build.prop file after doing this....?????
Ok I'll bite, late night tonight I'm going to flash back to AOKP....and give it a shot. It can't be that simple.....
Most certainly appreciate your effort...been looking for this for some time now.l!
HAvoktek said:
Ok I'll bite, late night tonight I'm going to flash back to AOKP....and give it a shot. It can't be that simple.....
Most certainly appreciate your effort...been looking for this for some time now.l!
Click to expand...
Click to collapse
I didn't think so either, but i had the problem, hoped it was like its Linux cousin and searched for fstab, i found it. Swapped the mounting destinations around. And voila, done.....
Swapped but CWM Recovery still the same
Hi, first of all nice guide you did here.
Here's the thing: somehow somewhere by flashing nightlies i ended up
with /sdcard being treated as my external SD while /emmc was for internal.
So I wanted to fix that and using your guide although the other way around
I was able to make it as such: /sdcard = internal storage; /emmc = external storage.
ALL IS GOOD however when i booted to CWM recovery:
CWM still mounts my internal storage as /emmc.
SO in recovery internal storage = /emmc while when in CM9 internal storage = /sdcard
Is there anyway i can change CWM so that internal storage = /sdcard? to be more uniform and not confusing
jeromepaez said:
Hi, first of all nice guide you did here.
Here's the thing: somehow somewhere by flashing nightlies i ended up
with /sdcard being treated as my external SD while /emmc was for internal.
So I wanted to fix that and using your guide although the other way around
I was able to make it as such: /sdcard = internal storage; /emmc = external storage.
ALL IS GOOD however when i booted to CWM recovery:
CWM still mounts my internal storage as /emmc.
SO in recovery internal storage = /emmc while when in CM9 internal storage = /sdcard
Is there anyway i can change CWM so that internal storage = /sdcard? to be more uniform and not confusing
Click to expand...
Click to collapse
Yeah CWM doesn't read the /system stuff, it has its own partition....
I've got no idea sorry, but its just a little inconvenient in CWM thats all.... But im sure you can check it out... Just search for fstab when you figure out how to explore the recovery partition (I've got no idea , short of modifying a flashable zip first and rekeying it.)
Forgot to post back with my results, Got HFS & AOKP to see the changes, however something broke when I did a PC mount. After playing with the lines "Experimentation" if you will, I ended up needing to rebuild my partitions! No fault of yours, I just wanted to see if I can have that functionality through the whole phones usage and features eg. mounting to the PC.
Thanks for the guide though, I'm seeing now that some devs are including the option to use the internal memory via a menu select, I wonder how there implementing that.
Probably something very similar but programmatically instead of the haxy file editing method I'm noting to use .
PC mounting is working as per normal for me here though...... (I don't have an external card right now so that may be a variable)
mattisdada said:
Probably something very similar but programmatically instead of the haxy file editing method I'm noting to use .
PC mounting is working as per normal for me here though...... (I don't have an external card right now so that may be a variable)
Click to expand...
Click to collapse
That it is, cause I can see my internal, but it doesn't mount the external.
Purpose
What is the purpose of this? Does it mount the EMMC so that the system thinks EMMC is actually an external sd card?
I am trying to figure out if there is a way to make the above mentioned happen. Or is there a way to re-partition it so that EMMC is used as system memory... or maybe even both? It seems that since ICS better integrates with on board memory, there would be a way to better integrate the internal memory of older devices with the system.
hfj00788 said:
What is the purpose of this? Does it mount the EMMC so that the system thinks EMMC is actually an external sd card?
I am trying to figure out if there is a way to make the above mentioned happen. Or is there a way to re-partition it so that EMMC is used as system memory... or maybe even both? It seems that since ICS better integrates with on board memory, there would be a way to better integrate the internal memory of older devices with the system.
Click to expand...
Click to collapse
This guide shows you how to "flip" the points. Several ROMs have it differently preconfigured. But if this is your current situation:
Code:
Emmc: External SD Card
SDcard: Internal SD Card
It will make it:
Code:
Emmc: Internal SD Card
SDcard: External SD Card
And vice versa obviously (its a flip).
This guide will do what your wishing it to do.
The folders sdcard and emmc (or there /mnt varient more closely) are just soft links, meaning they don't really exist, but just point to another location. We can modify which folder they are linked to in the fstab.void file.
so to make emmc to external_sd i change "dev_mount emmc /mnt/external_sd"?
Worked great on a Captivate running AOKP-36 right after a wipe data/factory.
lol you need no guide on cm9
you can switch them in storage settings by a simple checkbox
its mentioned in team hacksung's FAQ
Im on CM9. Can someone post the code so i can just do a simple copy and paste? I wanna switch emmc to external_sd
(there is no storage settings simple checkbox for me)
Sent from my SGH-I997 using xda premium
bradman117 said:
Im on CM9. Can someone post the code so i can just do a simple copy and paste? I wanna switch emmc to external_sd
(there is no storage settings simple checkbox for me)
Sent from my SGH-I997 using xda premium
Click to expand...
Click to collapse
Never use a copy and paste for the file in this operation. You only need to modify partially two lines (which you can copy and paste from the OP).
Your just swapping two words around really. Its fairly easy, just follow the steps and it will work, it looks daunting at first if your not used to doing this sort of thing, but its fairly easy.
Hello,
So after I flashed XXUFME3 I noticed that non of my files on my internal memory are showing any more.
When checking the storage, I can see that there was 5 GB worth of files un-accounted for, IE they still exist they just don't show any more.
After further digging up, here is what I have found:
The mount point for internal memory is no longer /sdcard/ it is now /sdcard/0/ and to my knowledge, I couldn't find a way to actually see /sdcard/ since it was not mounted to begin with.
Here is what I did to circumvate this:
1 - I rebooted to CWM recovery
2 - From there, I went to mounts & storage and mounted /data, /sdcard and /external_sd
3 - I opened an adb shell and from there browsing to /sdcard/ showed me all my precious files again.
From here on out, the solution was simple.
You can either:
Move all contents from /sdcard/ to /sdcard/0/ this can be done by running the following:
Code:
mv -r !(0) /sdcard/0/
OR
Copy all of your contents to your external SD by running the following:
Code:
cp -r !(0) /external_sd/
Both the above commands will exclude the directory "0" and all of its contents since you do not need to move them.
Hope this helps anyone who had the same problem.
Or you can go to /storage/emulated/0/0 folder and find all your old files in there.
bcostea said:
Or you can go to /storage/emulated/0/0 folder and find all your old files in there.
Click to expand...
Click to collapse
I looked and they weren't showing there. I had a similar issue when I moved to AOKP and I was able to restore them as you said, however this time they simply weren't there.
The mount point is actually /data/media normally but here it's /data/media/0 so you can just copy everything from /data/media to /data/media/0 with a root explorer (i use es)
/sdcard and /storage/emulated essentially just redirect you to be media folder.
Sent from my GT-I9300 using Tapatalk 2
delsus said:
The mount point is actually /data/media normally but here it's /data/media/0 so you can just copy everything from /data/media to /data/media/0 with a root explorer (i use es)
Sent from my GT-I9300 using Tapatalk 2
Click to expand...
Click to collapse
Yeah that's definitely an easier solution never found it while browsing though ! Thanks
I wrote a thread on this. Link in my signature
Sent from my GT-I9300 using Tapatalk 2
rootSU said:
I wrote a thread on this. Link in my signature
Sent from my GT-I9300 using Tapatalk 2
Click to expand...
Click to collapse
sir how can i restore my nandroid backup 4.1.2 from this 4.2.2? is it possible. it says md5 sum mismatch thanks in advance
The thread title is wrong. The files are not "lost".
Also, anyone who's used 4.2.2 before knows the deal here.
Kryten2k35 said:
The thread title is wrong. The files are not "lost".
Also, anyone who's used 4.2.2 before knows the deal here.
Click to expand...
Click to collapse
So are these duplicate files or just in a different place? I did a full wipe and flashed 4.2.2, then put all my stuff back from the backup on my computer. Does this effect me?
s14sh3r said:
So are these duplicate files or just in a different place? I did a full wipe and flashed 4.2.2, then put all my stuff back from the backup on my computer. Does this effect me?
Click to expand...
Click to collapse
Different location. Full explanation in the thread I wrote in my signature
Sent from my GT-I9300 using Tapatalk 2
Turns out it is because of multi user support... If you create another user profile, all the files from that user will get saved to /sdcard/1. Only way out is to move all files from /sdcard to /sdcard/0.
Sent from my GT-I9300 using xda app-developers app
what is the command to bind an sd card directory to internal on the s4? i dont want to pay for foldermount or any solution, the s4 should let you move all data but it doesn't
can anyone help?
mox123 said:
what is the command to bind an sd card directory to internal on the s4? i dont want to pay for foldermount or any solution, the s4 should let you move all data but it doesn't
can anyone help?
Click to expand...
Click to collapse
It's not so simple. With the data layout on 4.2.2 you need a custom module to mount it correctly which folder Mount has. .. Don't be a tight ar*se buy the app!
Sent from my GT-I9505 using Tapatalk 2
hi,
some apps store there data on the internal sdcard without the possibility to change the folder. i'be tried the app foldermount and could mount some foldern from the external sdcard to the internal sdcard, so the apps don't know that there store there data on /storage/sdcard1. but how can i do this without an extra app? i now that i can start scripts after android start. so i've tried this in terminal emulator
Code:
mount -o bind /storage/sdcard1/folder /storage/sdcard0/folder
but it doesn't work: "mount: Operation not permitted". how can i do this?
i use stock 4.4.2 (rooted)
gene
You missed su at the beginning of your command
Sent from my Xperia Z2 using Tapatalk
yes, thanks.
but now there is the error "bad option". whats that?
gene2 said:
yes, thanks.
but now there is the error "bad option". whats that?
Click to expand...
Click to collapse
I am using GL2SD app for that purpose. all the games data is in my sd card.
Not too sure what you are up to, but would symlinking work?
Sent from my D6503 using XDA Free mobile app
Maybe, but i think the extsd is fat32 and i'm not sure android can use ext formated sdcards. Fat32 doesn't support symbolic links.
I don't understand what 'bad option' mean.
I use Folder Mount for this purpose. It can move anything (per app obb/data)to external. Try it. if you like it... buy it (3 links max in free version)
Does require root though!
At the moment i use it too. but this is an extra app i have to install. Mounting with script should be the better way - but it doesnt work.
I've got an s7 edge running 8.0.0
In file explorer my internal storage is shown as storage/emulated/0
What does this mean? Is it cause I don't have an sd card in the phone?
Thanks to anyone who can help
greggins said:
I've got an s7 edge running 8.0.0
In file explorer my internal storage is shown as storage/emulated/0
What does this mean? Is it cause I don't have an sd card in the phone?
Thanks to anyone who can help
Click to expand...
Click to collapse
Internal storage goes by different symbolic name tag, it is storage/emulated/0 as emulated/virtual filesystem, not the actual one or /sdcard as a symlink or /data/media/storage as actual path to files.
Hi thanks for replying.... So in layman's terms, that means everything is normal and it's just another way of saying internal storage?
Exactly