Hi welcome to the forum

Try reassinging a drive letter to it can you get to it then? Some time windows messes this up and then you can't get to the drive
How to change a drive letter
loadTOCNode(2, 'summary');To change an existing drive letter on a drive, on a partition, or on a volume, follow these steps: 1.Log on as Administrator or as a member of the Administrators group.2.Click
Start, click
Control Panel, and then click
Performance and Maintenance. 3.Click
Administrative Tools, double-click
Computer Management, and then click
Disk Management in the left pane.4.Right-click the drive, the partition, the logical drive, or the volume that you want to assign a drive letter to, and then click
Change Drive Letter and Paths.5.Click
Change.6.Click
Assign the following drive letter if it is not already selected, click the drive letter that you want to use, and then click
OK. 7.Click
Yes when you are prompted to confirm the drive letter change.