With both computers, when the drive is attached and I run a system report, the USB Zip 250 drive appears in system report, and the serial # is detected. I've tried hooking the drive up to two different macs, one running High Sierra, the other running El Capitan. I'm using a USB external Zip 250 drive, and trying without success to mount 3 Zip disks, all 100 MB, all Mac formatted. Too bad there's no USB equivalent of that, did you ever figure out how to get your Zip disks to mount? Once loaded, the driver should remain loaded until the Mac is shut down or restarted.īack in the days of the Classic Mac OS, there was a utility called SCSI Probe that would "scan the bus" while running, and load drivers and drives where found. When you boot with the option key held down, this instructs the Mac to "scan all connected drives" to look for bootable copies of the OS.Įven though the ZIP disk doesn't have a copy of the OS on it, the Mac should scan the USB bus, and load the on-disk driver. When you get to the finder, do you see the ZIP disk on the desktop?Įvery Mac-formatted ZIP disk has a copy of the "on-disk driver" on it. Click on it with the mouse pointer and hit return.ĥ. Hold down the option key on the keyboard (keep holding it until the startup manager appears)Ĥ. Push ZIP disk all the way in, and then.ģc. Now - power on, and IMMEDIATELY (or as quickly as possible)ģb. Have a ZIP disk "halfway inserted" into the driveģa. Power down - all the way off (leave ZIP drive connected).Ģ.
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