> Hello Vitko > Last october you posted a problem with a USB flash disk (apacer). > Did you find a solution?
I guess I did, I'm usings two of these critters on daily basis, even if I'm not sure what was the exact problem back then. > celery:/dev # tail /var/log/messages > Feb 24 18:17:26 celery kernel: Device busy for revalidation (usage=1) > Feb 24 18:17:26 celery kernel: I/O error: dev 08:00, sector 0 > Feb 24 18:17:26 celery kernel: FAT: unable to read boot sector > Feb 24 18:17:26 celery kernel: SCSI device (ioctl) reports Well, these looks familiar. I'm using this checklist: 1) try reloading module usb-storage modprobe -r usb-storage insmod usb-storage It helps in 99 % cases. If you have usb storage support compiled staticaly in kernel, change it to module and recompile. It is worth having this as module, as I'm reloading it quite often. Sorry, I do not use any hotplugging scripts, as I simply do not trust them. Maybe I'll read some reassuring HOWTO sometime :-) 2) if reloading usb-storage doesn't work, but kernel at least detects some device, try unplug the disk, reload again, plug in a watch /var/log/messages. 3) if reloading usb-storage doesn't help, try to reload all usb subsystem, I do not have module names at hand. If you have the rest of usb compiled statically (as I have), reboot. This is really desperate. 4) now when you have used up all solutions on the system side it is time to assume the device is wrong - use cfdisk -z to start cfdisk with empty partition table and create partition. Use your distro tools to reformat is using FAT (if this is what you need, I using it for my part), in Debian. Unplug device, repeat step 1. Alternatively you can use Win 2000/XP (if available) to format filesystem. NOTE: Initially I had problems with my current Apacer HandySteno TN202, fdisk showed very strange partition table, which I corrected using cfdisk -z. No problems since then, I'm using it for some months alternately on Win 2000/XP and Linux. All this has worked with kernels > 2.4.22, right now I have here 2.4.25 and this checklist still helps. At home I have 2.6.3 with no problems with USB (even 2.0, chipset is VIA KT600 on Asus A7V600-X), but I haven't use flash disks so frequently at home so far. Most of the times swapping different kinds of flash disks makes trouble, reloading usb-storage resolves them in 99.9 %. Yesterday I didn't get any interrupts upon plugging-in the device, I had to reboot. I also destroyed thee QDI U2Store 256 MB 's or something like that. User in our company reported problems while copying > 100 MB files on Win 2000 box, so I investigated them a bit on Linux. Partition table looked quite strange, first sector was on position 100 or more. I corrected using cfdisk -z, reformatted. After unplug/plug-in I tried to copy some files back, but got some quite disturbing I/O errors. Win 2000 even didn't recognize the partition table at all! Now talk to me about compatibility. Good luck and please keep me informed. Vitezslav Kotrla ------------------------------------------------------- SF.Net is sponsored by: Speed Start Your Linux Apps Now. Build and deploy apps & Web services for Linux with a free DVD software kit from IBM. Click Now! http://ads.osdn.com/?ad_id56&alloc_id438&op=click _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
