Apple buried Copland 30 years ago. Now the failed OS boots in a browser
Relatively few people outside Apple's developer community in the mid-1990s ever had the opportunity to use them. REG AD googletag.cmd.push(function() { googletag.display('labrador/thereg/article/desktop/b'); }); Now you can boot Apple Copland D11E4 in your browser and explore the unstable prerelease OS without installing anything. Developer Michael Steil, also known as Mist, made it possible with an experimental fork of the DingusPPC Power Mac emulator.
- ▪Relatively few people outside Apple's developer community in the mid-1990s ever had the opportunity to use them.
- ▪REG AD googletag.cmd.push(function() { googletag.display('labrador/thereg/article/desktop/b'); }); Now you can boot Apple Copland D11E4 in your browser and explore the unstable prerelease OS without installing anything.
- ▪Developer Michael Steil, also known as Mist, made it possible with an experimental fork of the DingusPPC Power Mac emulator.
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Story provenance
Attribution is not the same as permission. This drawer separates discovery metadata, excerpts, WeSearch-generated summaries, reuse status, and whether the publisher receives the visit. Nothing here claims a legal grant the publisher has not made.
Record
| Original publisher | The Register |
| Canonical URL | https://www.theregister.com/os-platforms/2026/09/27/apple-buried-copland-30-years-ago-now-the-failed-os-boots-in-a-browser/5299201 |
| Publication time | Sun, 27 Sep 2026 12:30:00 +0200 |
| Retrieval time | 2026-09-27T10:30:41.073Z |
| Last seen | 2026-09-27T10:30:41.073Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | emA2XRNiBxy4 · 1 stories |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
Rights status (four layers)
WeSearch handling by dimension
| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
(function() { let windowUrl = window.location.href; windowUrl = windowUrl.substring(windowUrl.indexOf('?') + 1); let messageElement = document.querySelector('.shareableMessage'); if (windowUrl && windowUrl.includes('code') && windowUrl.includes('expires')) { messageElement.style.display = 'block'; } })(); os platforms Apple buried Copland 30 years ago. Now the failed OS boots in a browser The final developer build offers a glimpse of the future Cupertino abandoned for NeXT Liam Proven Liam Proven LINUX AND OPEN SOURCE REPORTER Published sun 27 Sep 2026 // 11:30 UTC READ MORE Asahi fork embraces LLMs and lands Linux on the M4 Mac mini 1 day ago iPhone 18 Pro benchmark boosted by giving it a cold drink 2 days ago Skip the upgrade? iPhone 18 Pro aperture about as unrepairable as it gets,…
Excerpt limited to ~120 words for fair-use compliance. The full article is at The Register.
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