[GraemeJ]

It seems we're not alone! A net search found plenty of people reporting the same sort of problem.

One person said this;

After upgrade to Jelly Bean I noticed that I wasn't able write to sd card. In ICS and GB everything was fine. After dipper digging I found it's a bug with permissions.

To fix problem you need ROOT (check another thread in this forum).

Edit file /system/etc/permissions/platform.xml

Find text


Code:
<permission name="android.permission.WRITE_EXTERNAL_STORAGE" >
<group gid="sdcard_rw" />
</permission>
And replace it with


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

Make it with caution. XMLs are very syntax sensitive. Any mistake may make your tablet inoperable.

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I found this interesting, but I don't know enough about the Android OS to understand half of it - I couldn't even find the file concerned. I assume it's hidden in some way, but I don't know how one gets to see it. If someone here does know, perhaps they would be good enough to explain how one does all this stuff?

I have a 32 GB card just pining for some data .