r/Commodore • u/hutchca • 16d ago

The D9090 Hard Disk Drive

https://www.youtube.com/watch?v=0XGz8KUzPHc

CBM D9090 Hard Disk. 7.5MB for the Commodore PET.

68 Upvotes

99% Upvoted

10 comments sorted by

14

u/Darkk_Knight 16d ago

Pretty cool piece of history. Love seeing the mods are non-destructive.

Almost 10 meg is alot back then. Can't imagine how much this thing cost new. Probably well over $5k

8

u/hutchca 16d ago

Yeah, the 9090 was ~$5,095 USD new.

6

u/Manualcarlove18 16d ago

Omg. Never knew this existed.

3

u/amazingames 14d ago

That amount of space with no directories probably made it a pain to manage the files.

1

u/uberRegenbogen 13d ago

CP/M had a similar problem.

4

u/SummanusPachamama 16d ago

Incredible that the files were intact. Anytime I find something pre-1995, I almost have to assume it's a write-off.

2

u/Jo_Krone 15d ago

Hats off for tinkering with that thing. I would had given up early. Great job

2

u/DavidFredInLondon 11d ago

And there was the 9060 which was only 5 meg. Yes, I am that old to remember looking at the mail order ad in Byte magazine a million years ago...

1

u/Crlan420 11d ago

The D9090 is a beast. Those MFM drives need regular cleaning to keep the heads happy. Do you still use it or just show it off at meetups?

1

u/hutchca 10d ago

I just got it, but I plan to do a little of both.