On Sun, May 22, 2005 at 10:08:21PM +0200, René van Paassen wrote: > Inserted a usb 2.0 disk, and the thing duly shows up on /media/usbdisk > However, writing was painfully slow, order of 100 kB/s That is most likely because hal is mounting removable USB devices with 'sync' option. Personally I think that this is insane and will cause numerous complaints and claims that Linux is extremely slow but this is supposed to be "idiot-proof". Mounting sync is really bad for a writing speed, and likely quite bad for "USB sticks" even if they do "wear levelling" in a reasonable way, but gives you a fighting chance that you did not screwed up your data and/or a file system on that device if you pulled it out without unmounting first. Mind you - only a chance and very far from guarantees. Of course if you will kill your USB memory stick in the process this is not much of a gain. There is some possibility that you can change that policy on your machine if you will be able to figure out how - which is hard to call "documented". > Tried a second disk, this one would not automount. After manually > mounting it (/dev/sde1) it ran well, with normal writing speed. A default for mount is 'async' so you will see what you see unless you asked otherwise. > Inserted the original disk again, and would not automount. After manual > mount (/dev/sde this time) it also ran well. See https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=158482 I guess that this is the same issue. Maybe even the same as 156167 but I really do not know. Michal