No Bootable Medium Found when mounting .vdi

[grahambo_j]

In addition to Mpack's thoughts above, this is the desired location for the .vdi in the attached obfuscated .vbox file above:

<HardDisk uuid="{35188a47-7ba5-4517-84a4-26df8b89594b}" location="Windows 10.vdi" format="VDI" type="Normal">

Note that the location contains no path. This means the .vdi is expected to be in the same folder as the .vbox file. If you have moved the .vdi elsewhere, that could be the reason why your first attempts to run the VM did not work.

Also, the .vbox file does not show any snapshots being used, which eases the fix.

Here is my recommendation:

1. Back up the original unobfuscated .vbox file and the original .vdi file. You're going to delete all references to these files in Virtualbox, which if done wrongly will permanently delete the files too.
2. Reboot the host so no Virtualbox processes are running.
3. Make a brand-new folder on a drive that you want the .vdi to be on. This will be the VM's folder. Move the .vdi and .vbox files to this new folder.
4. Start Virtualbox. The VM should read 'inaccessible'.
5. Right-click the inaccessible VM and delete it. If you get a pop-up box asking you to keep or delete the files, click to keep them, though you should have moved them already to a folder Virtualbox does not know about.
6. In the main Virtualbox window's File menu, Virtual Media Manager, check that there is no reference to the .vdi file. If it is listed, click Release and Remove. If you get a pop-up box asking you to keep or delete the vdi, click to keep it, though you should have moved it already to a folder Virtualbox does not know about.
7. In the Machine menu, Add command, browse to the new VM folder, and select the .vbox file.
8. The VM should now register and run, and ask you for the password.
9. If all does not go well, report what happened.

Thank you, that seems to have worked. The VM says "Invalid settings detected" but I'll try to figure that out on my own, if anything I'll make another thread. Thanks again.

The issue must've been me selecting "Machine -> New" and not "Machine -> Add"

[mpack]

The VM says "Invalid settings detected"

If you hover with the mouse over the exclamation symbol then you'll be told what the problem is.

[grahambo_j]

The VM says "Invalid settings detected"

If you hover with the mouse over the exclamation symbol then you'll be told what the problem is.

Thank you for all your help!