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Heh, that's funny. A couple of years ago I was going through a big stack of old floppies after I resurrected my Plus. Disinfectant flagged one of them with MDEF. i though it was pretty funny, 30 year old virus still lurking. Back in the day these things were pretty common around the office with...

I believe it came on the original Powerbook system install disks. (6.0.8-7.1 etc.) It would certainly also be available on one of the Service Source CD's from the '90's, images/ISOs of which are available.

An admirable achievement!

Here's an image of the Techworks 1mb cache I used in my 8500.

A fine score!

That is strange. If it's an IDE drive you might try reformatting (low level) it in a PC if you have access to one. After that, yeah, you might just let it go.

Techworks supplied Power Computing with caches and memory. One of the "secrets" to Power Computing's faster Macs were bigger caches. I have a Techworks 1MB cache I bought for my 8500. It made huge difference in performance over the stock 256K. (I got a discount from Techworks stuff because I...

There's probably some damage to the directory or the desktop file or some bad blocks. You can run the Apple Disk First Aid, it may fix it but Norton is a more comprehensive. The zip drive issue may be the extension is damaged or missing.

Oh I hadn't seen that. Terrific info! If you need a better photo of the HD board let me know. I can take a picture, although my drive is only 10mb.

Have you tried running something like Norton disk doctor?

Hmm, that's a shame, yeah fried components. No way to know why they fried or if replacing them would fix anything. I only fire up my system a couple of times a year and I'm always surprised that it still works because I know one day it won't.

If you're lucky the drive is just stuck and can be freed up.

The HD is a serial drive, at the least the one in my system is. Does the HD get power from the analog board? It may be that analog board needs to have the caps replaced. If it has a separate PS for the board and drive check out this thread...

Nice score! The Pioneer is a neat clone! The keyboard is real bonus. You might try removing the cards, it could be the power supply is getting weak. No surprise the CD300 has trouble with CD-R's, they barely existed when that drive was made.

https://lowendmac.com/lab/04/0115.html - it was convenient.

Hmm, very interesting! I might try that with my XL.

Early Macs getting too hot in certain environments was they used to make things like the Kensington System Saver.

Got these at goodwill the other day. Not bad for a buck each. Both look brand new. The BAT1 cup is from Motorola. BAT1 was the Bump, Assembly, and Test facility that Moto built in Austin back in the '90's.

Motorola laser marked the die on most parts. Apparently IBM marked the substrate rather than the die on their parts.

The chip speed is probably marked on the package under the white "gasket". However, it would be best not remove it as you don't want to damage the die with the heatsink. I believe that 333W is the module speed and if it's running ok at 333 well then there you go! :)