Start YOCTO Intel x86_64 image on QEMU failure

Issue

I create Yocto image for architecture x86_64 and run on the QEMU virtual machine by the below qemu command:

qemu-system-x86_64.exe -m 1024 -hda "rootfs.img" -cpu q35 -kernel "vmlinuz" -initrd "initrd" -append "root=/dev/ram0"

But the booting process was failed. How to indicate the rootfs.img to correct path? What is the problem with QEMU, I tested OK with VirtualBox.

Solution

I have to select the correct cpu (i7) and use correct virtual device to mount rootfs.img.

qemu-system-x86_64.exe -m 1024 -drive file=rootfs.img,format=raw,if=virtio -cpu Nehalem -initrd "initrd" -kernel "vmlinuz" -append "root=/dev/vda"

As the result, the image can boot successfully.

(Refer: https://wiki.qemu.org/Documentation/9psetup)

Answered By - Thảo M. Hoàng