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Warning!! connect one X to pc copy files may cause SD space lost

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By mmx6688, Senior Member on 3rd May 2012, 11:57 AM
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3rd May 2012, 02:47 PM |#21  
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Heres a shot of Mine using Disk Usage App. about 6gb in System Data lol...

 
 
3rd May 2012, 02:56 PM |#22  
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Quote:
Originally Posted by Birdskenburg

Yeah I think you're right. Still, it's strange that seedoubleu is reporting to have more than 14GB of 'bad sectors', what would be hidden there?

I still think this has something to do with the device's memory controller, because the 3+ GB really isn't accessible.

As Paul from MoDaCo said, HTC's not using the standard ICS MTP protocol. They've created a hybrid so the phone can support mass storage. Rather than letting the OS manage storage as a single disk, they're manipulating storage behind the scenes to create the illusion of two separate disks. It would make sense (to me) that what CHKDSK is viewing as bad sectors could be a virtual drive expanding and contracting. Just a guess.

P.S. - To further support this, something strange happened when I had the phone charging via USB. I was using Astro to move some files around and I got "disk full" errors. When connected via USB, even for charging, phone storage is locked on the device and isn't reopened until it's disconnected and the phone does a media scan. So HTC's obviously doing some voodoo in the background.
Last edited by BarryH_GEG; 3rd May 2012 at 03:02 PM.
3rd May 2012, 03:02 PM |#23  
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Attached mine,

Funnily enough the System data has once again increased in size since I disconnected my phone (which I didn't do safely ). Coincidence?
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3rd May 2012, 03:05 PM |#24  
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Try moving some apps from phone storage to SD (and vice versa) to see if that effects the size of the system file. If it does, that supports the virtual drive theory.
3rd May 2012, 03:18 PM |#25  
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I moved a few things backwards and forwards and System data went down from 15234 to 14855...
3rd May 2012, 03:26 PM |#26  
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Hmm nice work HTC Not very neat

So I guess we might get in to problems when using a large amount of the supposedly available capacity
3rd May 2012, 03:35 PM |#27  
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Quote:
Originally Posted by Birdskenburg

Hmm nice work HTC Not very neat

So I guess we might get in to problems when using a large amount of the supposedly available capacity

It really shouldn't be an issue. If there's 10GB of crap on your phone and 25GB of available storage it doesn't matter which virtual drive it lives on. Using an interface like Astro you can see which virtual drive things are on and move them back and forth. Things like CHKDSK and other drive tools won't work though. I kind of like the approach HTC took vs. using MTP. It's faster for transferring files and easier when accessing the phone from a (Windows) PC.
3rd May 2012, 03:45 PM |#28  
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So this is a non issue really? If I were to upload a 1GB file for instance would that just reduce the size of the 'System data' folder to accommodate for that?
3rd May 2012, 05:26 PM |#29  
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I'm also seeing the same thing, but on my phone is showing 14160 MiB taken up by system data ?

I have no music / videos on the phone, just some games and apps, which according to diskusage is taking approx 5-8 GB. I've 3.7GB free !

Something is not right here
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3rd May 2012, 05:31 PM |#30  
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your sd is eaten by system like i was.

Sent from my HTC One X
3rd May 2012, 05:46 PM |#31  
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How did you 'fix' the issue ?

Wipe SD card or factory reset or did you get to fix it at all ?

I did have loads of MP3 on my phone, but when space started to run low, I removed them all...but noticed it barely touched the free space. Must be some kind of caching going on when you use USB to copy stuff back and forth from your phone, but you would assume when you deleted the original content, that this would be removed too. Just speculation at this point...don't really know why this partition is eating so much space and what's contained within it.

I checked the SD card via FX explorer, but can't see the system data partition, so can't delete it.

I may have to wipe the SD card and see, but hate the hassle of setting up all my folders and favourite apps again

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