Ticket #838 (closed defect: fixed)
Mounting CD inside VM fails first time after changing image
|Reported by:||fjp||Owned by:|
|Version:||VirtualBox 1.5.2||Keywords:||Linux CD|
I boot the installer using with the VM's CD pointing to an ISO CD image (CD1). During the installation I need to switch to a different image (CD2). Even if I do that procedure completely manually, the first mount command will always fail.
# umount /cdrom /* use virtual disk manager to change CD ISO image */ # mount /dev/hdc /cdrom mount: you must specify the filesystem type # mount /dev/hdc /cdrom mount: block device /dev/hdc is write-protected, mounting read-only /* use virtual disk manager to change CD ISO image */ # mount /cdrom mount: no medium found # mount /cdrom mount: block device /dev/hdc is write-protected, mounting read-only # umount /cdrom
There is one strange thing: I can only reproduce this when using the Debian kernel compiled for a 486 processor (which is the one used in the Installer), not with the one compiled for a 686 processor. I can provide the kernel configs if needed.
I first experienced the problem during installation, but also reproduced it in an installed Debian system after booting it with the 486 kernel.
As this problem does not occur in vmware, I think it must be an issue in VirtualBox.
Context: Using a Debian Installer CD image to install a new system
Host system: Pentium D SMP x86_64 system running Linux 2.6.23
VM: VirtualBox 1.5.2 running 2.6.22 kernel
This report is based on my mail to the user list: