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Can not install windows7 when use /dev/sda3 and raw format

DISCUSSION John Wong 2 participants 4 messages Dec 27, 2009 – Dec 30, 2009 KVM

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John Wong

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#0 lore raw

I can not install windows 7 x86, when i use /dev/sda3 and raw disk format. the windows7 installer can not find the harddisk, no matter what drive i use (ide/scsi/virtio).

I can install, when i use qcow2.img.

my host system is debian/64bit/sid
uname -a: Linux retro 2.6.32-trunk-amd64 #1 SMP Thu Dec 17 06:29:18 UTC 2009 x86_64 GNU/Linux
qemu-kvm-0.12.1.1
kvm modules come from debian modules package (it shall be 2.6.32)

kvm command like this:

${KVM} -drive if=ide,cache=none,file=${IMG} \
-net nic,vlan=${NUM},model=virtio,macaddr=00:AA:BB:CC:DD:0${NUM} \
-net tap,vlan=${NUM},ifname="${iface}",script=/etc/kvm/kvm-ifup,downscript=/etc/kvm/kvm-ifdown \
-localtime -smp 1 \
-usb -usbdevice tablet \
-soundhw all \
-k en-us -monitor stdio \
-mem-path /hugepages \
-cdrom ${CDROM} \
-m 2048 -vga std -boot order=d,menu=off

when i change ${IMG} to ./qcow2.img, then it work. when i change ${IMG} to /dev/sda3, then it NOT work. (I'm sure i have read/write permission to /dev/sda3)

please help, and thank you.

#1 lore raw
Quoted 28 lines · John Wong

I can not install windows 7 x86, when i use /dev/sda3 and raw disk format. the windows7 installer can not find the harddisk, no matter what drive i use (ide/scsi/virtio).

I can install, when i use qcow2.img.

my host system is debian/64bit/sid
uname -a: Linux retro 2.6.32-trunk-amd64 #1 SMP Thu Dec 17 06:29:18 UTC 2009 x86_64 GNU/Linux
qemu-kvm-0.12.1.1
kvm modules come from debian modules package (it shall be 2.6.32)

kvm command like this:

${KVM} -drive if=ide,cache=none,file=${IMG} \

(quoted diff) +0 -2
-net nic,vlan=${NUM},model=virtio,macaddr=00:AA:BB:CC:DD:0${NUM} \
-net

tap,vlan=${NUM},ifname="${iface}",script=/etc/kvm/kvm-ifup,downscript=/etc/kvm/kvm-ifdown \

(quoted diff) +0 -7
-localtime -smp 1 \
-usb -usbdevice tablet \
-soundhw all \
-k en-us -monitor stdio \
-mem-path /hugepages \
-cdrom ${CDROM} \
-m 2048 -vga std -boot order=d,menu=off
Quoted 5 lines

when i change ${IMG} to ./qcow2.img, then it work. when i change ${IMG} to /dev/sda3, then it NOT work. (I'm sure i have read/write permission to /dev/sda3)

please help, and thank you.

What happens if you add format=raw to the -drive parameter?

--
Gleb.

author
#2 lore raw

Gleb Natapov 提到:

Quoted 5 lines

What happens if you add format=raw to the -drive parameter? --
Gleb.
--

The result is the same (still not work), i tried it before.

Thank you.