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Re: [Qemu-devel] format=raw,readonly errors
From: |
Markus Armbruster |
Subject: |
Re: [Qemu-devel] format=raw,readonly errors |
Date: |
Mon, 08 May 2017 10:51:50 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.1 (gnu/linux) |
Carl Karsten <address@hidden> writes:
> address@hidden:~/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:
>
> address@hidden:~/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"?
> hmm... one more try:
>
> address@hidden:~/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.
- [Qemu-devel] format=raw,readonly errors, Carl Karsten, 2017/05/08
- Re: [Qemu-devel] format=raw,readonly errors,
Markus Armbruster <=
- Re: [Qemu-devel] format=raw,readonly errors, Carl Karsten, 2017/05/08
- Re: [Qemu-devel] format=raw,readonly errors, John Snow, 2017/05/08
- Re: [Qemu-devel] format=raw,readonly errors, Carl Karsten, 2017/05/08
- Re: [Qemu-devel] format=raw,readonly errors, Eric Blake, 2017/05/08
- Re: [Qemu-devel] format=raw,readonly errors, Carl Karsten, 2017/05/08
- Re: [Qemu-devel] format=raw,readonly errors, Eric Blake, 2017/05/08
- Re: [Qemu-devel] format=raw,readonly errors, Eric Blake, 2017/05/08
- Re: [Qemu-devel] format=raw,readonly errors, Max Reitz, 2017/05/08
- Re: [Qemu-devel] format=raw,readonly errors, Daniel P. Berrange, 2017/05/08