I have installed Virtualbox 4.3.16 on Ubuntu 14.04 host system. The guest operating system is Win XP. I have installed Guest Addition CD and added a shared folder through settings. For sometime it shown the folder on Network Places and there after, on clicking the icon of the same, it shows an error.

Sometimes i got access just by installing guest Addition CD again, but later on restarting the guest system it gives the same error as "Disk is not accessible. The parameter is incorrect."

  • I had that error because my shared partition wasn't mounted on the host. :( – peter Aug 5 '18 at 14:52

I encountered this with a Windows 7 guest on Linux Mint Cinnamon 17, possibly due to a Windows upgrade. If you manually disconnect the disk volumes in the Windows File Explorer (right-click, then Disconnect) and then power off the guest OS and restart, it may fix the problem.

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