On Fri, Jun 06, 2008 at 08:18:09AM -0400, Torsten Hoefler wrote: > On Fri, Jun 06, 2008 at 02:24:07PM +0300, Marius Gedminas wrote: > > My N810 completely trashes the contents of the internal 2gb "memory > > card" every couple of weeks or so. I don't trust it *at all* any more. > did you try to reformat? That's what I do: reformat the card with the File Manager on the N810, create a new swap file, then don't touch the card. Later I will notice that after a reboot my card is showing complete garbage: http://mg.pov.lt/n810-fs-corruption.png This has happened three or four times since I got my N810. Initially I also had the problem with the FAT partition being a bit larger than the device, but reformatting it with the file manager also recreates the partition table, and it does that correctly. Then I used the internal card to keep my valuable data. Once I started getting filesystem errors, rebooted and discovered that the partition table was overwritten by the contents of a text file. Since then I no longer keep valuable data on the card. > I'm kind of worried to do this because another > filesystem might lower the lifetime of the flash-stuff by exhibiting > different write patterns (and since it's soldered in, I don't want to > destroy it faster than necessary). I'm actually even wondering if Nokia > changed something in the vfat implementation or if this is standard vfat > with the superblock in the first device blocks (seems to be very bad for > flash-based memory). I believe there's some balancing going on under the hood. You use JFFS2 on a MTD device on raw flash; SD cards pretend to be a regular block device that does write balancing in the hardware. I believe the N810 has the internals of a SD card soldered on the mainboard. Marius Gedminas -- A witty saying proves nothing. -- Voltaire
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