Report: macOS X Yosemite (10.10.5) – Overview, Features, System Requirements, and Legal Acquisition
If you never purchased Yosemite before – this method won’t work because Apple ties downloads to Apple IDs. mac os x yosemite 1010 5 download dmg link
The only legally sanctioned way to obtain macOS X Yosemite (10.10.5) is through Apple’s own distribution channels—principally the Mac App Store or Apple’s support download page for the 10.10.5 combo update. Using unauthorized DMG files from third‑party sites violates Apple’s licensing terms and may expose you to malware or instability. Follow the steps outlined above to acquire, verify, and deploy Yosemite responsibly. Report: macOS X Yosemite (10
10.10.5 Combo Update: If you already have Yosemite (10.10) installed and just need the 10.10.5 update, you can download the OS X Yosemite 10.10.5 Combo Update (approx. 2.12 GB). 2. System Requirements Wait 15–20 minutes
Even though Apple hides old OS versions, the purchase record remains in your App Store account. If you previously “bought” (downloaded for free) Yosemite when it was current: