know where I can get a 800k drive for a mac SE?

My bad. I was thinking of "autoinject" and not 800K vs. 1.44MB. However, unless you're a purist for collector's reasons, I think the 1.44 MB drive will work fine in the SE. It will read and write 800K and 400K disks just as well as an 800K disk drive. The only issue I can remember is that you might need a different floppy drive cable (red stripe vs. yellow stripe) or was that an auto-inject vs manual-inject cable issue? It's been so long since I've dealt with floppy replacement that that old knowledge isn't terribly accessible any more. But I do know that the 1.44 MB auto-inject drive is a good functional replacement for the 800KB auto-inject drive and the only reason not to do it is if you're trying to keep the machine pristinely original. Jeff Walther