On 06.09.2011 23:22, Nikola Ciprich wrote: > Hello guys, > > thanks to both of You for Your replies. The problem is solved, > exactly as Avi said, the DMA in windows got somehow disabled. > So this certainly was not related to adding the memory... > > anyways, note for further generations: > in windows XP, the DMA usage can be checked in > Device Manager->IDE ATA/ATAPI Controllers -> Properties->Advanced Settings > Current Transfer Mode must be Multi-Word DMA2 or something similar, > NOT PIO! > > The way I enabled this, was to uninstall both primary and secondary controller > in device controller, then also uninstall Intel controller, and THEN rebooting (NOT sooner!) > after reboot, controllers got detected and installed again, with DMA properly enabled. > Note that when controller is in PIO mode, this is really a patience test, switching to DMA took > me like half an hour to complete, so slow the system was :-/ You can open regedit and search for "NoIDE" - it should find one key with that name, with value "1" or "yes" - just delete it, there's no need to go that route with removing/reinstalling device drivers. The reason why it has been disabled is - most likely - due to some timeout while handling i/o -- eg, when your host was loaded too much or were swapping - you should be able to find something about that in windows event log. /mjt -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
