On 02/02/2011 04:48:40 PM, Paul Hartman wrote: > On Mon, Jan 31, 2011 at 3:43 AM, Helmut Jarausch > <jarau...@igpm.rwth-aachen.de> wrote: > > Hi, > > > > since a few weeks I have a strange effect with my USB stick. > > > > According to fdisk there is one partition on it > > /dev/sde1 38 7839719 3919841 b W95 FAT32 > > > > which I haven't changed for a long time. > > > > Whenever I insert this stick, the kernel log shows > > /dev/sde but not /dev/sde1 (and there is no file /dev/sde1) > > > > After Invoking fdisk /dev/sde with a simple 'p' command but nothing > > else, this device shows up. > > > > Has anybody an idea what's going on here? > > I have a USB SD-card reader which cannot read the partition table > when > first inserted into the PC. But, if I issue "hdparm -z /dev/sdg" then > the kernel re-reads the partition table and everything works fine > after that. You can try it, maybe it'll work for you, too.
Thanks Paul and all other who tried to help. Sorry for my late reply, I have been too busy. My situation seems special. - the card reader is 2 years old (builtin) - the stick is about 1 year old 2 of my 3 USB stick work just fine up to kernel 2.6.36-? the stick in question has worked definitely. Probably since kernel 2.6.37 this one shows the mentioned problems. Paul's advice above works just fine! So, I think it's a timing problem as Paul has suggested in a later mail. Where can I set the delay_use option of usb-storage to a higher value? Many thanks again, Helmut.
