OK. On Thu, Nov 3, 2011 at 4:04 PM, Stefan Hajnoczi <stefa...@gmail.com> wrote: > On Wed, Nov 2, 2011 at 8:35 AM, Zhi Yong Wu <zwu.ker...@gmail.com> wrote: >> HI, guys, >> >> I managed to change one cdrom on guest from DMA mode to PIO mode, but >> failed. Did anyone also met this same issue before? If you have some >> experience to solve this, Can you share with me? > > Since no one knows the answer off-hand you can find out the reason for > yourself by looking at the hdparm and Linux driver code to see how it > switches modes. Then look at QEMU's emulation to see why it's not > working. > > Stefan >
-- Regards, Zhi Yong Wu
