Inconsistent trouble with SD card writing

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By tomtor, Junior Member on 24th July 2010, 07:34 PM
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I bought a SanDisk 8GB class 2 micro SDHC card and I noticed that
it behaves strangely in the SG.

When writing larger amounts of data (100s of MBs) I get write errors.

When eg copying from internal SD (/sdcard) to external (/sdcard/sd) with
a filemanager or a backup program.

When connected with USB to a Win7 computer I can verify the disk or do a low level format, no problems. When I copy large amounts of data however, the SG hangs and I must reboot it.

When I put the card in an adapter and mount it on a Win7 or Linux system then I can hammer it with data transfers and all goes well.

So it is SG related and I'm using the stock firmware.

Bad contacts in the SG are unlikely, because once the data is written in the adapter it can be read without issues in the SG and the same contacts are used for writing and reading.

Looks like a driver problem to me.

Anyone else had these kinds of problems?
Last edited by tomtor; 24th July 2010 at 07:58 PM. Reason: typo
7th August 2010, 09:32 PM |#2  
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I have exactly the same problem with a sandisk 4gb class 2. I did not find a solution yet
8th August 2010, 03:32 AM |#3  
ickyboo's Avatar
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I have that problem. I believe its got to do with how much power the sgs drains from usb port. I fixed my problem with a powered usb hub. So try that, it fixed alot of usb connection porblems too.

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21st February 2014, 09:49 AM |#4  
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I have the same problems on SG 3
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sd card write error

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