Apple’s long-lost hidden recovery partition from 1994 has been found
In 1994, a single Macintosh Performa model, the 550, came from the factory with a dedicated, hidden recovery partition that contained a System 7 system folder and a small application that would be set as bootable if the main operating system failed to boot. This application would then run, allowing you to recover your Mac using the system folder inside the recovery partition. This feature was apparently so obscure, few people knew it existed, and nobody had access to the original contents of the recovery partition anymore.
It took Doug Brown a lot of searching to find a copy of this recovery partition. The issue is that nobody really knows how this partition is populated with the recovery data, so the only way to explore its contents was to somehow find a Performa 550 hard drive with a specific version of Mac OS that had never been reformatted after leaving the factory.
The thing is, this whole functionality was super obscure. It’s understandable that people weren’t familiar with it. Apple publicly stated it was only included with this one specific Performa model. Their own documentation also said that it would be lost if you reformatted the hard drive. It was hiding in the background, so nobody really knew it was there, let alone thought about saving it. Also, I can say that the first thing a lot of people do when they obtain a classic computer is erase it in order to restore it to the factory state. Little did anyone know, if they reformatted the hard drive on a Performa 550, they could have been wiping out rare data that hadn’t been preserved!
↫ Doug Brown
Brown found a copy, and managed to get the whole original functionality working again. It’s a fairly basic way of doing this, but we shouldn’t forget we’re talking 1994 here, and I don’t think any other operating system at the time had the ability to recover from an unbootable state like this. Like Brown, I wonder why it was abandoned so quickly. Perhaps Apple was unwilling to sacrifice the hard drive space?
Groundbreaking or not, it’s still great to have this recovered and preserved for the ages.