Hi @melmel_bk
The label command is used to write the initial header (label) on the tape for new media. It can be used to re-label a tape as well (for instance if the barcode is changed or otherwise is a mismatch with the media - note the check box to not verify any existing label for this case).
The quick erase command is typeically used to write a tape EOF marker after the label (so the tape must already be labelled) to make the remaining contents inacessible (or to be correct more difficult to access - with the right tools and understanding the some of the data can still extracted).
Hope this helps
David
