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Description of problem: Boot win8_64 guest with only one floppy with isa-fdc.driveB, guest can not use this floppy. when access this floppy, it will show error message :"A:\ is not accessible. The floppy disk controller returned inconsistent results in its registers.". Version-Release number of selected component (if applicable): 3.10.0-11.el7.x86_64 qemu-kvm-1.5.2-4.el7.x86_64 How reproducible: 100% Steps to Reproduce: 1.Boot win8_64 guest with only one floppy with isa-fdc.driveB. #<qemu-kvm cli> ... -drive file=/home/floppy2.vfd,if=none,id=drive-fdc0-0-0,format=raw -global isa-fdc.driveB=drive-fdc0-0-0 ... 2.open floppy inside guest. 3.Check the error message. Actual results: When access the floppy, it will get a error message as attachment picture. Expected results: Can access floppy as normal with no error. Additional info: I also test linux guest, it could access this floppy correctly. For win7_64 guest, it hits the same error. When boot win8_64 guest with only one floppy with isa-fdc.driveA, guest could access this floppy correctly as normal.
Created attachment 795489 [details] screen shot : error message when access floppy
Jun Li, I assume that this is not a regression, and if indeed it is not a regression, then I prefer not to fix it. Practically speaking, this is a rare situation that as you said can be easily be worked around by using disk-A, or better using an ISO (floppy is really needed only for XP boot-time driver's installation). Can you check if the problem existed also for RHEL6.4 with Win7 guests. Thanks.
(In reply to Ronen Hod from comment #3) > Jun Li, > > I assume that this is not a regression, and if indeed it is not a > regression, then I prefer not to fix it. > Practically speaking, this is a rare situation that as you said can be easily > be worked around by using disk-A, or better using an ISO (floppy is really > needed only for XP boot-time driver's installation). > Can you check if the problem existed also for RHEL6.4 with Win7 guests. > > Thanks. On RHEL7 with qemu-kvm-1.4.0-4.el7.x86_64 with Win7 guests Hit the same issue. kernel version:3.10.0-18.el7.x86_64 On RHEL6.5 with Win7 guests Hit this issue, too. kernel and qemu-kvm version: 2.6.32-416.el6.x86_64 qemu-kvm-0.12.1.2-2.394.el6.x86_64 On released RHEL-6.4 with Win7 guests Hit the same issue. kernel and qemu-kvm version: 2.6.32-358.el6.x86_64 qemu-kvm-0.12.1.2-2.355.el6.x86_64 In my original thoughts, I thought I have hit this issue, so filed this bug. Now, I know this is not a regression. So I think whether fix this issue or not is ok. Thank you for your detailed explanations.