i had to read this a few times to understand what is going on here, im still a little lost.
i was guessing as my source QUE upgrading & repairing computers 8th editionmbbrutman said:The XT came out around 1983. The change to double sided drives occured in 1981 or early 1982
Rolf said:As a note of interest: The Format is F#*king useless. It creates a disk that CHKDSK returns as Invalid Media.