Oh. I thought he just wanted to know if anyone knew if a 3.5" drive would work in a Z-100. He didn't come out and ask if the drive would work. Anyway, yes, a 3.5" drive can be used in the Z-100. You can connect it and tell the Z-100 that it's an 8" drive and it will use 77 tracks of the 3.5" disk and format it like an 8" drive but that will give you a non-standard disk format and the disk that couldn't be written/read on another computer. OR you can just connect the 3.5" drive and let the Z-100 think that it's a 40 track 5.25" drive but that won't gain anything but a non-standard disk format. OR there is supposed to be a way to use 80 track 5.25" drives on the Z-100. I don't remember what was involved but if you can find out, you could put in that mod with the 3.5" drives and double your disk capacity but you'd still have a non-standard disk format. OR you can get a copy of MS-DOS 4.00 and patch it to run on the Z-100. DOS 4.00 supports 3.5" drives. There was (is?) a website that had the patches but I don't have the URL for it here. Perhaps Rich Beaudry <r_beaudry(a)hotmail.com> still has it. I remember that it was located in such a way that a search wouldn't find it so someone will have to give you the URL. The guy that had the website was a real whiz on the Z-100s and he had done a lot of interesting patches/mods for the Z-100s including writing SCSI drivers and designing and building SCSI interfaces for them. All in all, the last option would be the best. It would give you a lot more disk capacity and the disks would be a standard format and could be interchanged with a standard PC. Joe At 07:50 PM 2/19/03 -0500, Glen wrote: