Unable to attach ISO file

[HuaMin]

Hi,
I have got an error below when attaching iso file to the Vbox. Please help.

Cannot attach medium 'D:\ed\en_windows_server_2008_r2_with_sp1_x64_dvd_617601.iso' {7e10fd1e-7fb6-4d6a-8445-caf0b1a64421}: medium is already associated with the current state of machine uuid {a2793aeb-c4dd-4728-b853-e17084e009da}!.

Result Code: VBOX_E_OBJECT_IN_USE (0x80BB000C)
Component: Medium
Interface: IMedium {29989373-b111-4654-8493-2e1176cba890}
Callee: IMachine {22781af3-1c96-4126-9edf-67a020e0e858}

[stefan.becker]

Tell your approach to do this.

[Justimancer]

attach the whole log,,
tnx

[HuaMin]

Stefan,
I am to attach the relevant ISO file to the VM for starting it and have then got the above error.

[stefan.becker]

Why not trying when the guest is running?

In the menu of the VBOX guest window, look at removeable devices, there you can unmount actual iso-image and mount the new one.