Question

what was the memory storage capacity of the first hard drive

Answer 1

It had 50 24-inch discs with a total storage capacity of 5 million characters
(just under 5 MB)

Answer 2

Hey Mate! Here's ur answer.
According to my knowledge, the memory storage of the first known hard drive was 1KB. But I'm not sure.

I Hope It Helps.....☺️