qemu, "Booting from DVD/CD... Boot failed: Could not read from CDROM"

[hunterlester]

Loving WSL, thank you all!

Windows Build Number: 14393.105

• I've run sudo apt-get install nasm xorriso qemu build-essential grub
• Created an .iso file
• I'm running qemu-system-x86_64 -cdrom os.iso expecting a window pop up and print "Hello, world!"

A window does pop up but the unexpected output is as follows:

Booting from Floppy...
Boot failed: could not read the boot disk

Booting from DVD/CD...
Boot failed: Could not read from CDROM (code 0004)
Booting from ROM...
iPXE (PCI 00:03.0) starting execution...ok
iPXE initializing devices...ok

iPXE 1.0.0+git-20131111.c3d1e78-2ubuntu1.1 -- Open Source Network Boot Firmware
-- http://ipxe.org
Features: HTTP HTTPS iSCSI DNS TFTP AoE bzImage ELF MBOOT PXE Menu

net0: 52:54:00:12:34:56 using 82549em on PCI00:03.0 (open)
  [Link:up, TX:0 TXE:0 RX:0 RXE:01]
Configuring (net0 52:54:00:12:34:56)...ok
net0: 10.0.2.15/255.255.255.0 gw 10.0.2.2
Nothing to boot: No such file for directory (http://ipxe.org/2d03e13b)
No more network devices

No bootable device.

I'd like to find out if this is a problem with WSL, so that I can check it off my troubleshoot list.
Please let me know any logs or other information that I can provide.
Thank you so much WSL team.

[hunterlester]

Problem solved.

On a system that uses EFI to boot, you may see an error like this:

$ qemu-system-x86_64 -cdrom os.iso
Could not read from CDROM (code 0009)

source link

In case anyone else is having the same issue be sure to sudo apt-get install grub-pc-bin

Rebuild your .iso and now run with qemu-system... and it should work.

[riyanabasu]

Thank you hunterlester!!! Super helpful :)

[majorxia]

Hi, I'm following this https://github.com/majorxia/mykernel to start from a minimal kernel.
but when run 'qemu -kernel arch/x86/boot/btImage'
I still got "no bootable device" on my laptop, which is EFI.

I've tried "sudo apt-get install grub-pc-bin", but STILL NO LUCK.
can anyone help? thannnnnnnnnks

[hunterlester]

@majorxia Looking at documentation, it doesn't seem that it's possible to only invoke the qemu command.
It looks like you also need the ISA, such as the command I was using qemu-system-x86_64.

The docs also specify that the -kernel option can be used for a bzImage, so you'd have to be sure that you are using a Big zimage.
I don't actually know, those two points just seem the best place to start for your next clues.

[tauvetech]

Thanks hunterlester, you 've saved my time... :-)

[codesparsh]

Thanks @hunterlester, very helpful !

[odinhorizontal]

I have same problem, but “install grub-pc-bin" can't help me, the output is: boot failed:could not read the boot disk......no more network devices,no bootable device.When in the real mode, the qemu works perfecyly,however, when i changed into the protected mode,the output is wrong,I can't figure out why...

[odinhorizontal]

problem solved. "chmod" to modify file's permission is useful.