Il 27/08/2013 23:37, Anthony Liguori ha scritto: > On Aug 27, 2013 4:32 PM, "Paolo Bonzini" <pbonz...@redhat.com > <mailto:pbonz...@redhat.com>> wrote: >> >> Il 27/08/2013 22:26, Erik Rull ha scritto: >> > Hi Stefan, >> > >> > which BIOS is selected by default? >> >> QEMU only ships with SeaBIOS. >> >> > It's more a guess, there must be a >> > change between 1.2.0 and 1.6.0 that prevents a simple Windows XP from >> > booting completely, if the guest HDD image is placed on a SSD. On a >> > rotating HDD (with the same commandline except the path to the image) it >> > boots successfully. The only difference is the speed of the disk access. >> >> It could be a real difference, actually. An unexpectedly fast disk >> might screw a sloppy driver. IIRC you're not the first person reporting >> it. Stefan, do you think using block throttling could fix it (with some >> trial and error)? > > Add cache=writethrough and I bet it'll work even on an SSD.
You'll also kill the SSD rather quickly though. :) Paolo > We changed the default in that timeframe. The Windows IDE drivers can > have an issue if the IRQ comes too quickly to indicate the request has > completed. This is what -win2k-hack is for. That may also work here too.
