On Mon, May 8, 2017 at 3:51 AM, Markus Armbruster <arm...@redhat.com> wrote:
> Carl Karsten <c...@personnelware.com> writes: > > > juser@gator:~/temp$ qemu-system-x86_64 -m 256 -display curses -drive > > file=disk.cow -drive file=boot.img > > WARNING: Image format was not specified for 'boot.img' and probing > guessed > > raw. > > Automatically detecting the format is dangerous for raw images, > > write operations on block 0 will be restricted. > > Specify the 'raw' format explicitly to remove the restrictions. > > > > This is OK, as I don't want anything writing to that thing anyway. So to > > get rid of the waring: > > > > juser@gator:~/temp$ qemu-system-x86_64 -drive > > file=boot.img,format=raw,readonly qemu-system-x86_64: Can't use a > read-only > > drive > > qemu-system-x86_64: Initialization of device ide-hd failed: Device > > initialization failed. > > -drive without if=... creates an IDE disk[*]. IDE disks can't do > read-only. Have you tried omitting ",readonly"? > omitting works, but my goal was for the drive to be read only. > > > hmm... one more try: > > > > juser@gator:~/temp$ qemu-system-x86_64 -m 256 -display curses -drive > > file=disk.cow,readonly > > qemu-system-x86_64: Can't use a read-only drive > > qemu-system-x86_64: Initialization of device ide-hd failed: Device > > initialization failed. > > > [*] It actually depends on the machine, but I figure that's of no > interest to you. > -- Carl K
