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ClockworkMod (CWM) Recovery easy install for RK3066 and RK3188 -- TWRP/CWM Flash-Tool and root for RK3288

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SDcards and permissions
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robinandroid
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Forum Posts: 11
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2013/02/15
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1
2013/02/15 - 16:53
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Hello, this not a V972-specific question but here it is ...

I have a rooted V972 and with a 32Gb sdcard. The sdcard is mounted but I cant write on it (I tried mkdir from the terminal app). My question is how do I change the permissions such that any app can read/write on the card ?

I tried chmod 777 /mnt/extsd

but I get d---rwxr-x permissions and I still cannot write on the sdcard. That seems different from linux permissions.

Can anyone help ?

 

Onda V972 -> rooted with Onda_Allwinner_A31_root_v1_0.zip -> factory reset -> stock V1.33

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tonigo
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Forum Posts: 2
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2013/02/16
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2013/02/16 - 03:05
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Hi robin, even with stock file manager?

 

At Htcmania (http://www.htcmania.com/showpost.php?p=7603637&postcount=149) predabcn have solved the mistery of readonly external sd (not sure if yours the same case).

Solution is simple:

- edit \system\etc\permissions\platform.xml

- somwhere in the file you'll find this:

<permission name="android.permission.WRITE_EXTERNAL_STORAGE" >
<group gid="sdcard_rw" />
</permission>

- just add a second line leaving it like this:

<permission name="android.permission.WRITE_EXTERNAL_STORAGE" >
<group gid="sdcard_rw" />
<group gid="media_rw" />
</permission>

- save and, don't miss it, reboot to take efect.

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robinandroid
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Forum Posts: 11
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2013/02/15
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2013/02/16 - 15:45
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Hello tonigo,

I have not solved this problem yet. But I did a *lot* of reading on several forums/blogs and I found the information you are referring to. "Chainfire" describes the issue in details (http://www.chainfire.eu/articles/113/Is_Google_blocking_apps_writing_to_SD_cards_/)

 

Although I have root access on my V972, I don't know how to edit this file (platform.xml). I need an editor that runs with root permissions. I am not sure this is enough because I tried to chmod 666 the file and the directory without success (says the file system is read only).

So, I first thought that the issue was not V972 related and that my post was off topic but it turns out that the possible fix may specific to the tablet.  I'll continue on the root firmware thread.

Onda V972 -> rooted with Onda_Allwinner_A31_root_v1_0.zip -> factory reset -> stock V1.33

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kanning
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Forum Posts: 1
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2013/02/27
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2013/06/28 - 18:54
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Hi!

 

I did exactly as mentioned in the post and it worked! Here is an easy way to do this. I installed TotalCommander and it needs to be granted root access when you use it. Go to system and then long press on the file you want to edit i.e. \system\etc\permissions\platform.xml and it will ask you if you want to edit it using TotalCommander editer. You can use that to add in the line and save. Hope you have resolved the problem already but if not, hope this helps.

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