Spike :donor:<p>A media archaeologist a couple of years back stumbled upon an older Macintosh running a prototype operating system that never saw commercial release: System 7.7 was subsumed by MacOS 8 a few months later. But the early-alpha version of 7.7 still exists, and thank goodness someone with the appropriate skill set found and archived this precious and rare slice of computing history. </p><p>I love that the Special menu was renamed "Speedy" but in all other ways, this feels very much like one of the older Mac System 7 setups...with a few interesting internal testing tools and some unexpected hints about who was using the device in the artefacts left behind on the drive image.</p><p>I plan to install this on real Mac hardware soon, but it does work great right now using SheepShaver, the emulator.</p><p><a href="http://macintoshgarden.org/apps/macos-77-pre-release" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">http://</span><span class="ellipsis">macintoshgarden.org/apps/macos</span><span class="invisible">-77-pre-release</span></a></p><p><a href="https://infosec.exchange/tags/MediaArchaeology" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MediaArchaeology</span></a> <a href="https://infosec.exchange/tags/MediaArchaeologyLab" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MediaArchaeologyLab</span></a> <a href="https://infosec.exchange/tags/Mac" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Mac</span></a> <a href="https://infosec.exchange/tags/ClassicMac" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ClassicMac</span></a> <a href="https://infosec.exchange/tags/RetroMac" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>RetroMac</span></a> <a href="https://infosec.exchange/tags/RetroComputing" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>RetroComputing</span></a></p>