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> a stack of CD-ROMs with the entire source code of Windows NT

That's a lot of code. Scary.

>That's a lot of code.

It's estimated to be around 40 million lines of code

And it was not compressed it was just a bunch of files and folders. My guess is it was around 15 CD-ROMs

40 million lines of 80 characters would fit in 5 CDs. With a more reasonable average length, it'd fit comfortably in 3.

And 40 million lines for an OS is a crazy amount of code.