Finding a legitimate copy of OS X Yosemite (10.10) today is difficult because Apple has officially deprecated it, meaning it is no longer available in the standard App Store search results.
Released in October 2014, Yosemite was a visual revolution. It stripped away the skeuomorphism of the past (the green felt in Game Center, the leather in Calendar) and introduced the flat, translucent design language we still see today. Key features included:
: Inside the disk image, run the InstallMacOSX.pkg . This will not install the OS yet; it will place a file named "Install OS X Yosemite" into your Applications folder. yosemite 10.10 download dmg
Wait for the process to finish. You will see Copy complete. and Done.
Open .
It is highly recommended to use Safari to open these links, as other browsers may not trigger the download correctly.
Be extremely careful. Searching for "Yosemite 10.10 download dmg" on Google will lead you to a minefield of malware-ridden zip files, fake updaters, and sketchy forum links. Finding a legitimate copy of OS X Yosemite (10
Most people want a DMG because they want to wipe a hard drive and install fresh. Since the App Store gives you an .app , you need to convert it to a bootable USB drive.