Lost drive letters

[Angster]

What would cause Windows ten to remove drive letters from my WD Black, 1tb Drives? I can still go to my bios and boot from them, but Macrium Reflect will not clone to them. My C: drive is an SSD. I use the WDs as part of my backup system. Thank you, Angster

 

[Trouble]

Check Disk Management and see how it is reporting the drives.
Right click the Start Button and choose Disk Management from the context menu.
Can you assign a drive letter to the drives from within Disk Management?

 

[Angster]

Check Disk Management and see how it is reporting the drives.
Right click the Start Button and choose Disk Management from the context menu.
Can you assign a drive letter to the drives from within Disk Management?

 

[Angster]

Thanks for responding Trouble.
The drives show in disk Management as healthy drives with no drive letters. I can find no way to add drive letters. There is "Change drive letters" . That doesn't work. I have googled it and there are no posts on adding a drive letter. I assume that formatting them will cause new drive letters but I am not ready to lose the information on them.

 

[Trouble]

Is there a chance that either or both of these two drives have ever been attached to a MAC?

 

[yodap]

Try right clicking the partition in DM and see if the option is in bold.