On Monday 18 July 2005 04:26, Carl Fink wrote: > I have a card reader built into my new PC that detects SD cards as > /dev/sda. Normally my fstab entry lets me mount them as a normal user. > That's: > > > /dev/sda1 /media/sd vfat rw,user 0 0 > > > Sometimes (like just now), though, instead mount reports: > > > mount: special device /dev/sda1 does not exist > > > The interesting thing is, if as root I "fdisk /dev/sda" and the hit "p", > and "q", mounting works again. > > Is this a bug in mount? In the SCSI subsystem? I'm ignorant here, it's > quite possible it's some subtle mistake I'm making. > > Any suggestions appreciated. It sounds more like either a corrupted filesystem on the memory card, or some non-conformant FAT-implementation in the mobile device. I have great faith in Linux's FAT-implementation. I would try zeroing the card and remaking the filesystem (check which version of FAT, before zeroing: I've seen both FAT16 and FAT32 on such partitions) using mkfs.vfat. Then check if the problem persists. (As a sidenote, this would be exactly what your signature warns about). It isn't a perfect way of determining a bad implementation, but luck also seems to play a role. Regards, Anders Breindahl.
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