You're right. The density refers to the physical memory capacity / magnetic density of the disk. Notching it just allows the other side to be read. We used to use paper hole punches in high school on our 5 1/4" disks. 3 1/2" disks were just being introduced then.
John sgrover wrote: > One minor correction... > > Notching a single-sided/single-density disk would result in a > double-sided/single-density disk. (not double density). Or has my > memory gotten tooooo hazy on this? I was only a teen at the time.. :) > > Shawn > > Kin Wong wrote: > >> I am starting to feel really old now. The notch was to allow the floppy to >> flipped over to use the other side. The initial drives were single sided >> and the notch was sensed by a micro-switch. The presence of the notch meant >> the disk was writeable, where an absence of a notch (covered up notch) made >> the disk write protected. >> >> Yes, some of us penny pinchers use to purchase SSSD (single-sided >> single-density) disks and notched them and hoped the quality was good enough >> to use as (single-sided double-density). I wonder if anyone has written >> this up in a wiki? >> >> >> _______________________________________________ >> clug-talk mailing list >> [email protected] >> http://clug.ca/mailman/listinfo/clug-talk_clug.ca >> Mailing List Guidelines (http://clug.ca/ml_guidelines.php) >> **Please remove these lines when replying >> > > _______________________________________________ > clug-talk mailing list > [email protected] > http://clug.ca/mailman/listinfo/clug-talk_clug.ca > Mailing List Guidelines (http://clug.ca/ml_guidelines.php) > **Please remove these lines when replying > > _______________________________________________ clug-talk mailing list [email protected] http://clug.ca/mailman/listinfo/clug-talk_clug.ca Mailing List Guidelines (http://clug.ca/ml_guidelines.php) **Please remove these lines when replying
