Related
Now.. coming from linux shouldn't this work now that we have root?
In theory this SHOULD work no?
ln -s /sdcard/app /data/app
I've tried to but with no avail. The phone refuses to boot.
Does it need a special rom to? I'm guessing the SDCard doesn't get mounted till its fully in? theres no /etc/fstab is there another mounting script I'm missing?
Thanks
xxsashixx said:
Now.. coming from linux shouldn't this work now that we have root?
In theory this SHOULD work no?
ln -s /sdcard/app /data/app
I've tried to but with no avail. The phone refuses to boot.
Does it need a special rom to? I'm guessing the SDCard doesn't get mounted till its fully in? theres no /etc/fstab is there another mounting script I'm missing?
Thanks
Click to expand...
Click to collapse
The mount of the partitions of the sd is managed by vold; the configuration file is /etc/vold.conf.
Ciao Angelo
Ok so how would I modify this so it will work for Apps to the SD?
xxsashixx said:
Ok so how would I modify this so it will work for Apps to the SD?
Click to expand...
Click to collapse
I think you can add an entry in vold.conf as the examples in the file.
An other solution could be to mount the partition in /init.rc
Ciao Angelo
Does the partition in the SDCard have to put Ext2 for the apps?
Yes. You have to partition the SD
Hmm the phone still refuses to boot..
has anyone gotten this to work?
i agree with this
so anyone got this working? I assume no
Can I have external card mounted as ext2? I have files names not supported by fat and sync'ed with dropbox
Yes, you can but afaik there is no easy way to do this.
I formatted my sdcard to ext2 (because I wanted to put large file (image for wikipedia offline) on my sdcard).
I formatted the beginning (~30MB) of my sdcard to fat32 so that the Nook detect the sdcard and does not trigger an error and the remaining part to ext2.
Then I used a script that mount manually the ext2 partition to /sdcard on boot.
This generally works but I have sometimes a few bug in some applications, especially when I connect and disconnect my Nook to my computer...
The best solution would be to find a way so that Android can automount a ext2 partition by itself but I don't know how to do it.
Instead of using the whole card I partitioned the first 4gb as fat16 (msdos) and then set the rest to ext3. When the fat16 space runs out I'll look into making some sort of script to try to mount the second partition. At the moment with the card acts like a normal 4gb card.
is it possible to repartition the nook to be able to use the space that b&n reserves for its contents? I heard that the space for our files is just 250 mb.
user4242 said:
is it possible to repartition the nook to be able to use the space that b&n reserves for its contents? I heard that the space for our files is just 250 mb.
Click to expand...
Click to collapse
yes of course. If you're used to linux repartitioning and the dd command then it's a breeze. If you're a Windows user who've never done partitioning or disk imaging then you can easily mess up.
I'll assume the former.
It's just a case of:
boot with a noogie.img that you've written to a sdcard (root of card, not partition 1)
then plug it in
now you can see all the nook partitions like it's an external USB drive and fdisk, cfdisk, partitionmagic or whatever you want
Obviously you're gonna want to backup first because if you mess up the only way to restore would be asking one of us off this forum to break the distribution laws and send you a 2gb (or whatever it is) image.
All the details on this forum
Has someone tried editing /system/etc/vold.conf to get a ext-formated SD-Card mounted?
mali100 said:
Has someone tried editing /system/etc/vold.conf to get a ext-formated SD-Card mounted?
Click to expand...
Click to collapse
I checked, I had modified it adding a line "partition 2" in the section "volume_sdcard2" so that Android does not show the message "SD card blank or has unsupported filesystem".
But I couldn't make it mount a ext2 sdcard itself. (if you know how to do it without using another script, I'm interested)
Time to resurrect this thread.
FAT is ugly. File timestamps are in local time (whatever that means, summer? winter?).
The Nook vfat implementation has problems with caching in and out directory info on vfat
and intermittently changes all the modify timestamps by 1, 4 or 5 hours.
This can play havoc if you are trying to keep things synchronized by filetime.
I've decided to have my SD card be ext3
Our volume demon, /system/bin/vold (which is ancient) uses /system/etc/vold.conf to configure automounting.
It presumes that all volumes are vfat.
It seems from a brief look inside that it does handle ext2 and ext3 somehow.
There is also the question of getting it to automount USB drives.
The easiest solution to ext3 on the SD card is to make it non-removable.
First, delete the second section out of vold.conf that relates to the SD card.
Then edit init.rc:
Code:
mkdir /sdcard 0777 system system
...
mount ext3 /dev/block/mmcblk1p1 /sdcard nosuid nodev noatime nodiratime uid=1000,gid=1015,fmask=117,dmask=007
chown system sdcard_rw /sdcard
chmod 0770 /sdcard
If you feel like having 12 partitions on your SD card you can.
That leaves vold only handling the mounting of /media
This exists so that you can serve /media as USB Mass Storage.
You could have /media be a fixed mount by doing what you just did to the SD card.
The only hiccup there would be the Adobe Digital Editions wants to see /media as UMS.
Note: To edit init.rc, download bootutil from the signature, extract, edit and replace init.rc in uRamdisk.
Make sure that you have a backup and a recovery!
Note: All of the above changes to init.rc are wrong.
I can get it to mount in a shell, but not in init.rc
Whoops.
Oops, this thread has been forgotten.
Yes, auto-mounting ext3 SDcards has been solved.
See: http://forum.xda-developers.com/showthread.php?t=2184495
I am a big fan of books. This is why I have a nook simple tablet. But after being introduced to Overdrive, which I am sure at least one of you has heard of (Googie), I want to be able to download ebooks from overdrive. The only problem is, I would need an external storage device to save these from opera mobile. This is a bit unsettling, seeing as I don't have a micro sd card. (don't ask.)
So, my question is, is there a way to fool the nook into thinking an sd card is inserted?
Thanks in advance!
Since sdcard is mounted under /sdcard directory, I believe mounting (binding) a directory under writeable partition (e.g. /data/sdcard) to /sdcard might be enough.
May need to also link to /data/sdcard as well as the /sdcard. This can be done with symlinks or mounting. Ie mount said partition to /data/sdcard then symlink from /data/sdcard to /sdcard. Though the /sdcard symlink may already be there
Sent from my ADR6300 using Tapatalk
How would one do this? I just recently adopted android and I do not know much.
it might require modifications to the ram disk within the boot.img. or possibly using ln -s /data/sdcard /sdcard after boot is completed in a terminal. You may need to delete the /sdcard dir first and set proper permissions
Looking in a terminal you will need to symlink the emmc(internal memory) to /data/sdcard. ln -s <emmc dir> /data/sdcard. You may need to delete the /data/sdcard dir first.
Sent from my ADR6300 using Tapatalk
Hmm...
I'm just going to get an sd card. Thanks anyway, it's interesting to know you can do that.
Hi all,
i formatted my sdcard with ext3, but CM7 doesn't mount it. I changed the 'vfat' in the fstab to 'ext3', but it still dosn't mount the card. I can manually mount it with 'mount /dev/block/mmcblk0p1 /sdcard', but then I can only access /sdcard via Terminal Emulator or the adb shell. Root explorer says that it is not mounted although it is mounted. Does anybody know how to fix that?
Mister Ypsilon said:
Hi all,
i formatted my sdcard with ext3, but CM7 doesn't mount it. I changed the 'vfat' in the fstab to 'ext3', but it still dosn't mount the card. I can manually mount it with 'mount /dev/block/mmcblk0p1 /sdcard', but then I can only access /sdcard via Terminal Emulator or the adb shell. Root explorer says that it is not mounted although it is mounted. Does anybody know how to fix that?
Click to expand...
Click to collapse
Hey dude, I feel ya. I wanted to ext3 all the way, but google thought Android users would rather use fat for their sdcards so we're bound to trying to work around it. You might want to look at your sdcard permissions, check that you have "X" permissions for user, group and other, or just go crazy and do "chmod -R 777 /sdcard".
You could look into what this guy did: http://android.modaco.com/topic/308568-how-can-i-bind-mount-eg-systemsdxxx-sdcardxxx/#entry1511967
but I backed out mainly because it looks too much like more trouble than its worth.
Good luck!
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.