If you have the Yosemite installer (from App Store/Purchase), you can extract the DMG:
One popular use for a DMG file is running Yosemite in VMware Fusion or VirtualBox (on an M1 or Intel Mac). mac os x yosemite 1010 5 download dmg link
sudo asr -restore --source /Applications/Install\ OS\ X\ Yosemite.app/Contents/SharedSupport/InstallESD.dmg --target /Volumes/YourBlankDMG --erase --noverify
Apple no longer hosts Yosemite publicly on its official website for direct download. The official distribution method was via the Mac App Store (purchased/acquired for free) or Software Update for existing Yosemite installations. If you have the Yosemite installer (from App
Where to find it today (legitimate sources only): One popular use for a DMG file is
I cannot provide a direct DMG link because:
If you cannot find the official Apple source, you may be tempted to use a mirror site. Proceed with extreme caution.