I have been using Eraser software which overwrites the file with random
data several times to make it unrecoverable. Recently, I have attended
the Forensics class offered by SANS. When it came to the topic of
metadata, some of the classmates mentioned that Eraser works only at the
application level. This confused me a bit.

My question now is, does Eraser delete the data and metadata as well?
If not, then how do you delete metadata? How do you cleanup the
metadata at the file system level? I use Eraser on Vista and Linux.

Thank you in advance.

NJ