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?
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.
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.
It could be ".android_secure"folder. Is it where apps were "moved to SD card"? It's Wierd because some apps don't find this folder, I only figures it out using root apps.
Old question, but here is new solution:
Just dial *#9900# on the phone and then select from
This method worked for me. This started to happen on my new 128gb sd card.
It is a cheap Chinese one, so that might be a reason.
But every time I delete bigger files, I have to wait a bit, issue this command, and that gives me back my space. Retro feel, but it works, and it was 1/4th the price of a Kingston card, so could not care less.
Thanks for downvoting a method that actually works. Just StackExchange things, I guess.
This looks like this problem. https://androidforums.com/threads/low-on-space-system-data-huge.278837/
The *#9900# solution works for many people, but not all.
If you can root I think you can delete the log files. Otherwise, you could try a factory reset.