If you have more than one Mac you want to upgrade to macOS 10.15 Catalina but don't want to waste so much bandwidth downloading it for each machine, one option is to create a bootable installer on.

As you know, Apple releases a new OS X operating system every year, and the new OS X can only be downloaded via the Mac App Store (currently OS X Yosemite). The older versions of OS X are still supported by Apple, but it should be more difficult to download. My following tip can help you easily download and create USB installer for OS X – Yosemite, Mavericks, Mountain Lion, and Lion.

Before doing, you need to prepare 2 things:

• An USB – at least 8Gb or higher.
• A MacBook to run Disk Utility in OS X.

How to create USB installer for Mac OS X

Step 1: Download installer of OS X Yosemite, Mavericks, Mountain Lion, and Lion

We are still able to download Yosemite from Apple store:

Go to Mac Apple Store > use your Apple ID and login > Find and download OS X Yosemite. After downloading, OS X Yosemite Installerwill appear in /Applications. To get the InstallESD.DMG, go to Application > right mouse on OS X Yosemite > select “Show Package Contents“.

OS X – Mavericks, Mountain Lion, and Lion can be downloaded through Torrent method:

Firstly, Get μTorrent or Folx Pro (Folx Pro 3 full version download), then use following torrent file to download the OS X version you desire.

You'd select cell D5, and then on the View tab, click Freeze Panes. Excel for mac lock cells. Any time you freeze rows and columns, the border below the last frozen row and to the right of the last frozen column appears a little thicker (here, below row 4 and to the right of column C).Unfreeze rows or columnsWant to unfreeze a row, column, or both?

• Download OS X Lion 10.7.5 (4,3 GB) – Torrent.
• Download OS X Mountain Lion 10.8.5 (4,1 GB)- Torrent.
• Download OS X Mavericks 10.9.5 (4,9 GB)- Torrent.
• Download OS X Yosemite 10.10.2 (5,3 GB)- Torrent.

Step 2: Format and make USB bootable

1. Plug USB into Macbook and run Disk Utility > Select the USB drive in the left side > Click on Erase > Choose Mac OS Extended (Journaled) format > Apply.
2. Go to Partition tab > Select 1 Partition at Partition Layout.
3. Change the name to Untitled 1 from Untitled > Click on Option.

5. Choose GUID Partition Table and click OK.

6. Click on Apply to format USB > End the Disk Utility when the process is completed.

Step 3: Make USB OS X installer

Run OS X installer.DMG download in step 1 to mount it’s virtual hard drive into system > Launch Disk Utility, select the right USB in the left side > Click pn Restore > Drag and drop OS X installer.DMG into Source > Drag and drop USB into Destination > Click on Restore button.

Luxor free download game full version. After the restore process is completed, we have obtained the USB stick containing the installer of OS X Lion, Mountain Lion, Mavericks, or Yosemite at your choice.

Notice: Once the USB stick should only contain one OS X installer version. You should have several USB stick if you want to create many installers.