ThinkVantage Rescue and Recovery

[ojeda]

I am trying to delete 1 of 2 backups I have in ThinkVantage HD 2, and it is telling me there is no hard drive space to do it.l
My C Drive has 150GB with 53GB free. The second HD, the one I am using for backup, has 320GB, with 93GB free.
The RRBackup Folder in HD 2, has 53GB. Can I resolve this situation so I can delete an old backup? I would need space for a backup, and I dono tknow if I should delete the RRBackup folder, it might complicate things. I need some suggestions.
What I have is a ThinkPad T500, with 3GB memory.
Thanks and regards, Eugenio