how do I delete files from my backup disk ?

[mmeieio]

After downloading the latest updates for Google Earth, I began getting a msg saying that "there is not enough disk space on your backup disk."
When I attempted to clean it up, I was unable to free up any space.
I have a LENOVO 570; the backup disk is labeled: Lenovo: D
It says I have @ 10.6MB free out of 29GB
Can I delete all the drivers and the applications from the D drive ?
And then do a complete restore once the D drive is emptied ?
Any other suggestions ?

 

[ignatzatsonic]

Post a screen shot of your Windows Disk Management so we can see what is going on.

Do you knowingly install applications to D, rather than C?