Fun fact: a prototype Macintosh equipped with a 5.25-inch floppy disk drive (referred to as a « Twiggy » in Apple’s vocabulary) has been restored. Such devices, whether Lisa or Macintosh, often appear on eBay.
Originally, Apple intended to use a 5.25-inch drive, but due to its reliability issues, the company ultimately decided to opt for a 3.5-inch floppy disk drive.
The person who managed to rediscover the first Twiggy Mac prototype encountered a problem: the machine wouldn’t boot. Fortunately, a former Apple employee had another prototype of a similar kind in their archives. By swapping parts between the two machines and using old test floppy disks, one of the two machines successfully started up. Subsequently, the two fortunate owners of these machines even managed to start the second one by salvaging certain components from an old Mac 512k.
In the end, both devices are operational, as evidenced by the photos.