If you own a Samsung Focus and have tried to use external microSD cards (other than the one provided by the manufacturer), then you are likely running into compatibility issues, or even data completely evaporating after a reboot. XDA member wm.andrew.wilson and a few other members are currently testing a few registry tweaks that deal mainly with power control to the SD card. According to the dev, these tweaks seem to be stabilizing things quite nicely and adding a few extra goodies as side effects: faster device response and better battery life. It seems that so far, the issues are gone (for the most part), but they would like to get more feedback from other Focus owners.
The dev also claims that if this proves to be a solid fix, that this will be sent over to Microsoft for evaluation on their end. So, if you happen to have a Focus, please drop by the thread and leave your experience after applying the mod. Keep in mind that your device needs to be unlocked before doing any of this.
A few of us on the SD card list thread have tried this and it seems to be stablizing things….the theory as we are working with now is that the problem is due to a power control issue in the Samsung drivers for the phone, not especially in the card itself.
No ill effects have been reported as of yet, and the battery life seems to be on par with before the switch was made. It is a simple fix, and can be reversed easily.
You can find more information in the fix thread.
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