For some reason she wants to review the data. Perhaps she might want to save some of it? In any case, it seems that it is better to look through what is there and erase the files instead of doing a bulk type eraser. As Dave pointed out this may make them useless.
Makes sense. Yea, don't bulk erase em. Same with a lot of the tape media like LTO. There are a number of Bernoulli cards on feeBay. I remember the drives, but when I used them they were 44mb and SCSI as I recall. https://www.ebay.com/itm/124405462633 Looks like a DB-37 cable is used as well. Also, some of the boards on eBay have an EPROM (boot?), some don't. Some are missing a bunch of chips including what might be a pal/gal. Lots of different versions but most seem to have DB-37. - Ethan