A closer look at the attached information reveals that the ISO file is not just attached to a virtual machine but also to a snapshot. The first solution that comes to mind is to simply remove the disk from the virtual drive. The ISO file is attached to a virtual machine, and VirtualBox therefore disapproves meddling with the file. You can see the reason in the Attached to field of the screenshot above. Thus, I can’t tell Virtual Media Manager the new location of the file or that the file is no longer required. As you can see in the screenshot, all options to manage the ISO file are grayed out. If you deleted the file or want to move the file to a new location, things can get tricky.

If you restore the file, the warning will disappear. You’ll see the file name and the original location. In my case, it was a Windows 10 ISO file. The tab with the exclamation mark contains information about the missing file. This will open the Virtual Media Manager, which you can also access through the VirtualBox File menu. However, these warnings sometimes point to a real problem and it therefore makes sense to click the Check button. VirtualBox Warning - One or more virtual hard disks, CD/DVD or floppy disk image files are not currently accessible.įirst of all, you can, of course, get rid of the prompt by checking Do not show this message again.

Virtual box windows 10 image