I suspect that no matter what you do, the old session will still be discoverable using a tool like ISO Buster.

I'm kind of drawing a blank otherwise. I guess you could make a new session that includes a set of files with the same names but zero length, but that won't hide the filenames.

^^ I don't care that much, I just want them not to show in standard use (file managers, directory listings, etc.) I'm making discs up to give away at an event & I suspect 100% of my target audience isn't going to do data forensics to discover the obsolete USB-RS232 drivers that have been hidden away.

(As to why I need to use this particular disc instead of a fresh one, have you guys tried to find 8cm CD-Rs lately?? I only have 10, and this is one of them. 😜 )

I'm pretty sure I could "delete" files on disc in Nero, and after burning a new session with new TOC those files would disappear.

Azarien wrote:

I'm pretty sure I could "delete" files on disc in Nero, and after burning a new session with new TOC those files would disappear.

...but the files won't be really deleted. Any software capable of accessing individual sessions could access a previous session and list/read/copy those unlisted files (even if you "overwrite" those files using new versions of that files).

but the files won't be really deleted.

My understanding is that xjas is not concerned about this.

Some software may allow you to choose if you want to import the previous session

Yes you can, but not reliably. It'll probably work with most modern drives but don't rely on it.

By default the drives should look at the last session. A small minority will only ever look at the first session.

A very small minority of drives (I have an IBM 2x SCSI CDROM drive that features this, no other drives I have managed last time I checked years ago) allow for the session to be selected. This was using some OS/2 burning software though, maybe modern software is more flexible..