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I am running out of space in my SD card on Android ICS and I noticed that a huge file "System data" is taking up to 500MB. Is this normal? How can I reduce its size?

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Could you quote the exact error message? And no, I wouldn't consider it normal, be it just for the question "What do system data have do do on the SD card?" In case "System data" doesn't stand for a file name: Did you possibly install some "big app" on your SD card? (Could be meaning App2SD-related stuff then) –  Izzy Aug 3 '12 at 8:03
    
Furthermore, what is the precise file path to that file? Odds are, you can just delete it, since no real system data is actually saved in /sdcard/ -- Its probably just a poor translation.... –  rm-vanda Aug 15 '12 at 21:52
    
is the folder "/sdcard/android/"? That is the folder that is the recommended path for applications to store additional data to the sdcard. –  Ryan Conrad Jan 7 '13 at 2:38

2 Answers 2

I have never seen such a file on ICS.

You could simply try to move the file to your PC and see if everything works. I think it's pretty safe to do so, because critical system files are usually not placed on the SD card.

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I don't think it's normal> I had a similar issue on my Samsung S2. Some people have reported that this was created by the generation of log files (alog_*) ; others from anr_history.txt.

If you can root your device, you can safely delete these files. If you cannot root your device, then you need to factory restet the phone in order to wipe all the data.

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