![]() ![]() Relevant emulators: Basilisk II, SheepShaverĪffected Environments: approximately Apple Mac OS 7.x through OS 9.0.4 (late M68K and PowerPC Macs) The magnetic field generation power is very different for high density disks and for their drives than for the low density disks and those drives.Multi-file Content and Software resources and “Change Media” in Apple Environments ¶ Don't format them in other drives (like PC floppy drive or modern Mac's floppy drives)! If you have a Macintosh 128/512 with 400k disk drive, please use only 400k low density disks (400k in Apple's names and 360k for the PCs). High Density disks and Double Density disks are - again - very different. If your question was about the disk formatted with 1.44 drive possible to use in an 400k or 800k drive, than the answer is "no" again, because you have to cheat and cover the HD slot on the 1.44 floppy disk. ![]() The "old" Apple drives are changing their rotation based on the sector (the head position over the disk surface). Only the Apple SuperDrive able to handle "modern" floppy formats (PC and Mac) because the data storage way is similar: fix rotation speed. Not only the size than the way of data management is different. Those first generation Macintosh models with 400k or 800k drives are entirely different. It is more important for the very early 400KB disk drives arrived in the original Macintoshes.Ĥ00k and/or 800k Floppies with an External USB Floppy DriveĬlick to expand.No. It has greater sector's lenght at the outside regions and shorter sectors inside.īUT: DO NOT FORMAT a disk in a PC drive if you want to use in a Macintosh floppy drive. That disk what is 400KB (or 800KB) in a Mac that is 360KB (or 720KB) in a PC drive. The SuperDrives and PC floppy drives are fix rotation speed disk drives. (Inner region has less sectors, outer regions have more sectors (because of the longer diameter of the disk)). In this was they can keep the sector phisical size equal on the whole surface of the disk. The 400KB or 800KB drives are completly different - they're changing the rotation speed based on the sector where the read/write head is. It is in the original text, maybe I will highlight it. It will work only with SuperDrives (and with the 1.44MB USB floppy drives). This command in Unix-like system could look like this:Ĭlick to expand.No, sadly, not. Of course you can use some emulator (Sheepshaver or Basilisk II) to create a full size diskimage, and copy this disk image to the USB-connected floppy disk. Topic discussed here bellow, in this thread) ( Sadly it won't help you to read/write 400/800KB MFS disks for the very early Macintoshes. This solution works with any Mac from the SE up to the latest model with floppy drives, before the iMac G3. If you just want to kick-start your ever-first-just-arrived vintage Mac, and you have a cheap USB Floppy, then here is a solution for you. You can use lot of different solution to use SD cards like harddisks (SD2SCSI, MacSD, blueSCSI, RaSCSI, etc) or use the SD card like a floppy (e.g.: Floppy Emu) but for these solutions you have to invest sometime more sometime less money. There are lot of ways nowadays to move files between vintage Macintosh and modern OSes like the actual, unix based macOS 12, Monterey.
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