I have made the following registry changes and have noticed a big improvement in reliability, no more DSOD on my phone!

I added the following:

HKLM/System/StorageManager/Profiles/SDMemory/
Added FATFS Key
HKLM/System/StorageManager/Profiles/SDMemory/FATFS
Added:

DWORD DataCacheSize:0
EnableWriteBack:1
FatCacheSize:0
Flags:68

Adding the Flags removed the backup fat table write, use at your own riskl.

I have noted a faster SDCard access as well.

Sonny486

well I made the changes and my ppc still came up after a soft reset...we'll see how it goes

Very interesting. Does anyone know what this stuff does? Where did you find out about these entries? When I see something that sets a cache size to zero I have to wonder what it does to performance.

Does this fix the DSOD issue even if you do not disable the backup backup FAT table write?

This would be a heck of a find if it does fix the DSOD issues - including all of the hassles with the Today plug-ins accessing the SDcard!

I was looking at the MSDN website dealing specifically with WM5. There are several sections that relate to keys and registry entries. I was experimenting with mine b/c it seemed my phone would DSOD when in standby.

I also found some bad files on my SD card which lead me to start looking at default SD Storage key in the registry. The Cache numbers set to 0 tells the system to make the cache size decision. Same for the FatCache key.

-Sonny

http://msdn.microsoft.com/library/de...rysettings.asp

Check it out.

-Sonny

Can anyone else confirm that this works??

Nice find. I notice about a 30% - 40% increase in performance. I have Directory Assistance on the SD Card (longest program to start up on my SD Card) and it now loads in approx. 7 seconds rather than 10. I also have Ultimatebet.com loaded on there and it loads in about 2 seconds rather than 4.

Those have been the only 2 I've tried thus far, but it seems to work a little better.

__________________
Bryan

"I'm not going anywhere NEAR that sabertooth snatch of yours." - Dr. Christian Troy

I made the following changes to:
HKLM/Drivers/SDCARD/ClientDrivers/Class/SDMemory_Class/

BlockTransferSize : 64

I think it was 16 before.

It was 16 and I have also made the change and have noticed a little increase. DA now loads in 5-6 seconds and ultimatebet.com loads almost immediately.

__________________
Bryan

"I'm not going anywhere NEAR that sabertooth snatch of yours." - Dr. Christian Troy

I have made the changes on my XV6700. It is noticibly faster.

Good Work!

Thanks

Drewidian

My BlockTransferSize says 256 and I have never edited it before. Should I leave it as is or change it to 64?

In Regedit by PHM you select HKLM/System/StorageManager/Profiles/SDMemory/FATFS

Then Edit
Then New DWORD Value
Value Name: DataCacheSize
Value Data: 0
The same for the rest of the entries.

If you don't feel comfortable using regedit, then you should not attempt this, you could screw up your phone.

-Sonny

Here's an explanation, but the distinctions are really only meaningful to programmers.

http://www.windowsnetworking.com/kba...datatypes.html

Has anyone else tried this mod? My phone does not lock up when charging at night anymore.

-Sonny486

This working for people to get rid of DSOD if we have made sure we dont use shortcuts and the typical fixes for the sd cards as well ?

I haven't had the charge/lock-up problem but I have had DSOD issues. Since I have done your mod I haven't had one (yet!). Thanks!


Had two DSODs yesterday (09/21) for no apparent reason. These have been the only occurrences from my earlier post.

Hmmm, changing the registry is the one mod I haven't done to my phone it seems. I'll have to think about this one.

This sounds great, though. I hope to hear more success stories - especially wrt the DSOD.

Ok i added the
Datacachesize: DWORD 0
EnableWriteBack: Dword 1
FatCacheSize DWORD 0

I didnt add the Flags, Is that a must? You said it can screw up the phone?
Will a hard Reset Recover from this if it does screw it up?
Thanks In Advance

I'd advise against this one. This reg edit made my WMP skip like a little school girl playing hop-scotch! I can confirm that it was just this reg edit as I soft-reset after each registry modification (both adding and removing) and the problem only showed when the transfer size was set to 64.

Didn't your mother ever tell you not to play with WMP

I will have to check that out though.

__________________
Bryan

"I'm not going anywhere NEAR that sabertooth snatch of yours." - Dr. Christian Troy