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I used a shared 'SD' folder on the microSD card of my BlueSCSI V2 to copy old Macintosh Plus compatible files from my M1 Mac running MacOS Ventura to my Macintosh Plus running MacOS 7.1. But when I try to open that application in the Macintosh I get the error message 'The document "Disk Copy...

I have a Macintosh Plus 4GB booting into OS 7.1 from a BlueSCSI V2 emulator and working fine. However, although I’m reasonably computer literate on modern Macs I know nothing about many aspects of the older Macintoshes. I want to create the original 800K system disks for either 7.1 or 6.0.8 so...

This tiny 5mm high electrolytic capacitor broke off a 30+ year old MicroMac PerformerPro accelerator card for a Macintosh Plus computer. I’m not an engineer and the only label on the capacitor is the info on the top (see attached image) - 22, 6A, 5G3. The capacitor still has a decent size lead...

I have a vintage Macintosh Plus recently removed from long-term storage. It seems to be working well and I added a BlueSCSI emulator which boots fine into Systems 6 and 7. When I opened up the Mac to modify the logic board with a resistor enabling SCSI power to the BlueSCSI I discovered that...

I have a vintage Macintosh Plus recently removed from long-term storage. It seems to be working well and I added a BlueSCSI emulator which boots fine into Systems 6 and 7. I have one minor problem I noticed when it was running for a while. The screen, which on boot-up was nicely crisp...