Originally Posted by danifunker

I experience the same problem, but it's really strange because this never happened on my Blackberry Torch before. I didn't have any instances of data corruption. I also think it's got something to do with reading the files, since I'm really not doing any writes to the disk.

I had the same problem with a cheap Class 10 Card.

Can anyone recommend a Class10 Card for the Droid 3 ??

I replaced my crappy Lexar 32gig Class 10 with a Kingston 32gig Class 10. Much better, no corruption at all! Ive had it for 3 weeks now.


Sent from my XT860 using XDA App

Did Droid3 support UHS-1 Card?

I read in a couple of different forums to change the format type.
I have a Lexar 32GB MicroSD.

Again, I had no corruption when I was on blackberry, only when I switched to Android (3 months no corruption beforehand).

1 forum recommended to download the SD Card formatting tool and reformat the disk using a Windows / Mac machine. The tool can be downloaded here:

https://www.sdcard.org/downloads/formatter_3/

The original thread is here:
http://www.xoomforums.com/forum/moto...sdhc-card.html

On the other hand, someone from XDA developers posted a solution in which the card is formatted without LBA mode, as a FAT32 file system and using 32K clusters.

You can read the XDA-developers post here:

http://forum.xda-developers.com/show....php?t=1010228

I just tried the sd card format utility and will come back with results after a couple of days.

Looks like it's working. After a few reboots, a few unmounts and a few days I can easily say the microwd format fix resolved my issue! Plus the speeds on this thing are a lot faster... who would have thought...

Sent from my XT860 using xda premium

Originally Posted by danifunker

Looks like it's working. After a few reboots, a few unmounts and a few days I can easily say the microwd format fix resolved my issue! Plus the speeds on this thing are a lot faster... who would have thought...

Sent from my XT860 using xda premium

Thanks for the heads up! I also used the sd format tool and things are much better now.


Sent from my XT862 using XDA App

Originally Posted by jweber228

Thanks for the heads up! I also used the sd format tool and things are much better now.


Sent from my XT862 using XDA App

Spoke too soon, still seeing corruption and losing files. Was fine til I started putting music on it, started out tranferring fast but slowed to a crawl after a bit. I guess the card I have either sucks or I got a lemon.


Sent from my DROID3 using XDA App

Droid 3 SD results

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This post re-lit my hatred for a Patriot Class 10 I bought on eBay so i decided to do some investigation. I want to determine if the D3 performs differently with manufacturer's advertised SD card speeds

I mounted my DROID3's microSD card directly to my PC (Win7) via Clockwork Recovery (so no overhead from android OS), tested with CrystalDiskMark and came up with these results...

SanDisk 16GB Class 2 (Came with my Droid 1)


SanDisk 8GB Class 4 (Found it somewhere)


Patriot 8GB Class 10 (bought on stupid eBay)


Every card is showing the same results. I will test these cards again on my Work PC to see if I get different results and post them tomorrow.

Don't forget that the classes indicate the minimum transfer speed of the card. For class 2, the manufacturer guarantees a minimum speed of 2mB/s.
The classes are probably a 90% marketing trick, since a class 10 card could also be called a class 2 card vice versa.

the results are in

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I tested 3 different microSD cards three different ways.

In Green: Mounted the SD card to my Win7 PC at home via Clockwork Recovery.
In Blue: Mounted the SD card to a WinVista PC at work via SD reader on the PC.
In Red: Mounted the SD card to my WinVista PC at work via Clockwork Recovery.

SanDisk 16GB Class 2


SanDisk 4GB Class 4


Patriot 8GB Class 10


Conclusion:
- My boss is wrong saying our computers are fast
- My work PC actually is slow as balls.
- Purchasing an SD card based on an advertised Class Rating is pointless.
- You should buy microSD cards from trusted manufacturers based on:
capacity, warranty, and of course best price!!


**edit**
Just to throw this out there... The CrystalDiskMark tool could also be bogus.

---------- Post added at 03:04 PM ---------- Previous post was at 02:53 PM ----------

i apologize for the large photos to those reading this on the XDA app. you will need to open each pic individually to see all the screenshots.