On 06/02/2011 12:42 PM, Dmitry Shalnoff wrote: > Hello Everybody, > > I have a periodically appeared problem with SD card writing/reading > functionality. I has several cards to try and found some correlation with > size and speed type of the card. ' > > Problems are appers when I'm trying to write intensively on the card. Usually > on the next boot I found filesystem corrupted and cant' mount card anymore > till I fsck it (with predictable files damage) or reformat. > > generally it's looks like 16GB cards almost 100% cases have problems. > and as I suppose 4 class cards more prone to problem than class 6. > > Question is simple: Is my suspicions are correct (concerning class and card > size)? what is general recommendations? Who has any good/bad experience with > different types of cards? > > I know about this topic http://wiki.openmoko.org/wiki/Supported_microSD_cards > , but it's doesn't looks like relevant tutorial to buy fail-safe SD and > obviously this problem doesn't rely on brand name too. > > thank you beforehand for any help, > Dmitry > > _______________________________________________ > Openmoko community mailing list > [email protected] > http://lists.openmoko.org/mailman/listinfo/community > >
Hi Dmitry, I also had some trouble with my SD cards. For me it seems that using u-boot with 4-4-4 timing settings gives a much more reliable use of the SD cards. With the 2-4-2 timing i have a lot of file corruption, so i switched back to an old kernel and the old 2-4-2 timing and have had little or no problem with the SD cards since i switched back. I love to hear if your troubles are over too when you switch back. I got my u-boot from [1] I run my distro from the SD card, so corruption is really annoying for me. Kind regards, Ed [1] http://www.bsdmn.com/cgit/cgit/u-boot/snapshot/u-boot-gena2x.tar.bz2 _______________________________________________ Openmoko community mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/community
