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# 1  
VirtualBox

I want to change my virtual box disk to immutable. When I try to do that I get the following error.

Error changing medium type from Normal to Immutable.
Cannot change the type of medium '/root/VirtualBox VMs/fedora13/fedora13.vmdk' because it is attached to 1 virtual machines
Please help me how to resolve this. My host system is RHEL 5.6

Last edited by fpmurphy; 09-02-2014 at 11:54 PM..
# 2  
Open the Virtual Media Manager, "release" the affected image and try again.
Code:
The Virtual Media Manager allows you to

    remove an image from the registry (and optionally delete the image file when doing so);

    "release" an image, that is, detach it from a virtual machine if it is currently attached to one as a virtual hard disk.

Source: https://www.virtualbox.org/manual/ch05.html#vdis
# 3  
Thanks a lot.....Issue resolved
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