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QEMU Setup in Linux

Compile kernel: cd /usr/src/linux-3.12.1 $ ls arch/x86/config $ make i386_defconfig $ make menuconfig satkg@satkg:~$make write program : init.c #include <stdio.h> #include <unistd.h> int main(void) { while(1) { printf(“Hello World \n”); usleep(1000000); } return 0; } $ gcc -static -o init init.c $ dd if=/dev/zero of = ramdisk.img bs=1M count =4 $ mkfs.ext2 ramdisk.img $ sudo mount -o loop ramdisk.img rootfs $ sudo cp init rootfs $ sudo mkdir rootfs/dev $ sudo mknod rootfs/dev/console c 5 1 $ sudo mknod rootfs/dev/ram b 1 0 $ sudo umount rootfs qemu -kernel /usr/src/linux-3.12.1/arch/x86/boot/bzImage -initrd ./ramdisk.img -append “root=/dev/ram init=/init” Creation of new virtual machine: $ qemu-img create ubuntu.img 10G $ ls -l ubuntu.img Install Ubuntu: $ qemu -hda ubuntu.img -boot d -cdrom /ubuntu-13.10.iso -m 512 Booting: $ quemu -m 512 -hda ubuntu.img

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