How to Fix ‘Former Volume Not Mounted’ Error In Windows 10/8/7 [Tutorial]

How to Fix ‘Former Volume Not Mounted’ Error In Windows 10/8/7 [Tutorial] Some Windows users are reporting that they randomly see the ‘Former volume not mounted‘ error. Upon expanding the error, the message says that access to the disc where the files are stored is not available. This tutorial will apply for computers, laptops, desktops, and tablets running the Windows 10, Windows 8/8.1, Windows 7 operating systems. Works for all major computer manufactures (Dell, HP, Acer, Asus, Toshiba, Lenovo, Samsung).