Am Mittwoch, den 25.03.2009, 08:38 -0400 schrieb Jim Donelson: > I didn't say the driver HAD to do wear leveling, but if wear level is > to be done, the driver must do it, as SD cards don't do it > themselves. > Quoting from the SanDisk Spec: > > "The SD Card’s Wear Level command is supported as a NOP operation to > maintain backward compatibility with existing software utilities." this just says that there isn't an explicit command for wear leveling, but it doesn't say that the card doesn't do internal wear leveling.
the sentence just before that: "Wear-leveling is an intrinsic part of the Erase Pooling functionality of SD using NAND memory." It doesn't specify HOW it is done, however. If there would be no wear leveling at all, that would mean that the card would die pretty fast with filesystems like FAT where the first sectors are written frequently. -Erwin _______________________________________________ uClinux-dev mailing list [email protected] http://mailman.uclinux.org/mailman/listinfo/uclinux-dev This message was resent by [email protected] To unsubscribe see: http://mailman.uclinux.org/mailman/options/uclinux-dev
