Download Yosemite .dmg Installer for OS X 10.10: A Step-by-Step Guide
How to Download and Install Yosemite from a .dmg File
If you are looking for a way to upgrade your Mac to a newer version of macOS, you might be interested in Yosemite, also known as OS X 10.10. Yosemite was released in 2014 and introduced a major redesign of the user interface, as well as improved integration with iOS devices and iCloud. Yosemite also added new features such as Continuity, Spotlight, Notification Center, Mail, Safari, and more.
download yosemite .dmg installer – os x 10.10
One of the ways to install Yosemite on your Mac is to use a .dmg file, which is a disk image that contains the installer. A .dmg file can be downloaded from various sources and then transferred to a USB flash drive or another bootable device. This way, you can create a bootable installer that you can use to install Yosemite on any compatible Mac without having to download it again.
In this article, we will show you how to download and install Yosemite from a .dmg file. You will need the following things:
A Mac that meets the minimum requirements for Yosemite. You can check if your Mac is compatible .
A copy of the Yosemite .dmg file. You can download it from the Mac App Store or from a direct link.
A USB flash drive or another suitable bootable device with at least 8 GB of storage space.
A software tool to create a bootable installer from the .dmg file. You can use either the createinstallmedia command or Disk Utility and TransMac.
How to Download Yosemite .dmg File
There are two options to download the Yosemite .dmg file:
Option 1: Use the Mac App Store
If you have previously purchased Yosemite from the Mac App Store, you can download it again for free. Here are the steps:
Open the Mac App Store app on your Mac.
Click on the Purchased tab at the top.
Find OS X Yosemite in the list of purchases and click on the Download button next to it.
Wait for the download to complete. You will find the Install OS X Yosemite app in your Applications folder.
Right-click on the Install OS X Yosemite app and select Show Package Contents.
Navigate to Contents > SharedSupport and locate the InstallESD.dmg file. This is the disk image that contains the installer.
Copy the InstallESD.dmg file to your desktop or another location where you can easily access it.
Option 2: Use a Direct Link
If you don't have access to the Mac App Store or you prefer to download Yosemite from another source, you can use a direct link. Here are some examples of websites that provide direct links to download Yosemite:
WebsiteLink
Once you have downloaded the Yosemite .dmg file from any of these websites, save it to your desktop or another location where you can easily access it.
How to Create a Bootable Installer from the .dmg File
There are two options to create a bootable installer from the .dmg file:
Option 1: Use the createinstallmedia Command
If you have a Mac that can run Yosemite, you can use the createinstallmedia command to create a bootable installer from the .dmg file. Here are the steps:
Insert your USB flash drive or another bootable device into your Mac. Make sure it has at least 8 GB of storage space and is formatted as Mac OS Extended (Journaled).
Open the Terminal app on your Mac. You can find it in Applications > Utilities.
Type the following command and press Enter. Replace /Volumes/Untitled with the name of your USB drive and /path/to/InstallESD.dmg with the location of your .dmg file.
sudo /Applications/Install\ OS\ X\ Yosemite.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled --applicationpath /path/to/InstallESD.dmg --nointeraction
Enter your administrator password when prompted and press Enter.
Wait for the process to complete. It may take several minutes. You will see a message that says "Done" when it is finished.
Eject your USB drive and label it as "Yosemite Installer". You have now created a bootable installer from the .dmg file.
Option 2: Use Disk Utility and TransMac
If you don't have a Mac that can run Yosemite, you can use Disk Utility and TransMac to create a bootable installer from the .dmg file. Here are the steps:
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Download and install TransMac on your Windows PC. You can get it from .
Insert your USB flash drive or another bootable device into your PC. Make sure it has at least 8 GB of storage space and is formatted as FAT32.
Open TransMac and right-click on your USB drive. Select Restore with Disk Image.
Browse to the location of your .dmg file and select it. Click OK.
Wait for the process to complete. It may take several minutes. You will see a message that says "Restore Completed" when it is finished.
Eject your USB drive and label it as "Yosemite Installer". You have now created a bootable installer from the .dmg file.
How to Install Yosemite from the Bootable Installer
Once you have created a bootable installer from the .dmg file, you can use it to install Yosemite on any compatible Mac. Here are the steps:
Plug in your USB drive or another bootable device into your Mac.
Restart your Mac and hold down the Option key as soon as you hear the startup sound.
You will see a list of available startup disks. Choose the one that says "Install OS X Yosemite".
You will be taken to the OS X Utilities screen. Choose Install OS X and click Continue.
Follow the onscreen instructions to install Yosemite on your Mac. You will need to agree to the terms and conditions, select a destination disk, and enter your Apple ID and password if prompted.
Wait for the installation to complete. It may take several minutes or hours depending on your Mac's speed and internet connection. Your Mac will restart several times during the process.
When the installation is done, you will be greeted by the Welcome screen. You can now set up your Mac and enjoy Yosemite.
Conclusion
In this article, we have shown you how to download and install Yosemite from a .dmg file. This is a convenient way to upgrade your Mac to a newer version of macOS without having to download it again for each device. You can also use this method to create a backup or restore disk in case something goes wrong with your Mac.
Here are some tips and troubleshooting advice for installing Yosemite from a .dmg file:
Make sure you have a reliable internet connection and enough battery power before installing Yosemite from a .dmg file. You don't want to interrupt the installation process or lose your data.
If you encounter any errors or problems during the installation, you can try to restart your Mac and repeat the steps. You can also use the Disk Utility option in the OS X Utilities screen to repair your disk or erase it and start over.
If you want to revert back to your previous version of macOS, you can use the Time Machine option in the OS X Utilities screen to restore your Mac from a backup. You can also use another bootable installer that contains your previous version of macOS.
We hope this article has helped you learn how to download and install Yosemite from a .dmg file. If you have any questions or feedback, ple