Posted February 28, 2011 by Jimmy S in Apple Mac, Mac OS X Leopard, Mac system administration
Apple released the new Mac OS X 10.10 Yosemite in the Mac App Store for everyone to download and install for free on October 16th, 2014, but downloading a 5+ GB file for each of your computers will take some serious time. The best thing to do is download it once and create a bootable install USB drive from the file for all of your Macs. Oct 07, 2019 Note the name of your external hard drive (probably 'Untitled') because you will need it when you create a bootable drive. If you have more than one external drive with the same name, you will need to rename the drive you are using as a bootable installer now. If your Mac is using AFS+, select Mac OS Extended (Journaled) from the format list.
Oct 24, 2011 This recipe will explain how to make a USB Thumb Drive bootable with the OS X Lion Developer Preview installer on it and in turn allow you to install Lion on a Mac without an optical drive (ie Macbook Air line). We will need a copy of the installer dmg (not provided) and a 4GB. Step 3: Now open a Finder window and locate your DMG file. Drag and drop it under the drive names in the Disk Utility app. Step 4: Next, select the file, and then click on 'Burn' in the same window. In the popup that appears, select your destination drive, which is the USB flash drive you want to burn the DMG file to.
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This recipe will explain how to make a USB Thumb Drive bootable with the OS X Lion Developer Preview installer on it and in turn allow you to install Lion on a Mac without an optical drive (ie Macbook Air line). We will need a copy of the installer dmg (not provided) and a 4GB USB Thumbdrive or Memorycard Reader w/memory card and a Mac to convert the dmg to a bootable usb thumb drive.
Requirements:
How To Boot With Installer Dmg On A Flash Drive Free
This guide lets you restore the .dmg installer file for OS X Lion onto a usb thumbdrive. We can then boot the USB Drive on our Mac to install OS X Lion from it. This is very handy for us Macbook Air users that do not have an external optical drive.
Guide:
1. On your Mac, open up Disk Utility. Click on the USB Drive on the left.
2. On the right pane, go to the Restore tab.
3. Click on the Browse button and locate the .dmg installer for OS X Lion. (ie mac_os_x_10_7_11a390.dmg)
How To Boot With Installer Dmg On A Flash Drive Windows 10
4. Once you have it chosen, click and drag your USB Thumbdrive from the left pane to the Destination box. (ie THUMBDRIVE in the screenshot) and then click Restore
How To Boot With Installer Dmg On A Flash Drive Download
I recommend erasing the destination, so be sure to backup any data on the thumbdrive prior to this step! This will take a few minutes to do. Mixed in key 7 for mac dmg file. Once its finished, you now have a bootable OS X Lion install thumbdrive (basically just like what the Macbook Air ships with).
5. Hold Option/Alt after your see the Apple logo appear and boot with the thumbdrive in your Mac.
Choose the USB Drive to install OS X Lion from your USB Thumbdrive!
How To Boot With Installer Dmg On A Flash Drive Mac
NOTES:
– I have confirmed this working on a Macbook Air 11″, 2010, 1.6Ghz version.
About Jimmy S
Jimmy Selix is an early adopter that loves to be one of the first on the block to have the latest and greatest in technology and gadgets. Another love of his is being able to share his knowledge to others seeking it. Feel free to drop any comments or questions that you may have.
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Here's how to create a bootable Windows installation USB drive starting with a Windows .iso file or a Windows Setup DVD.
Note
For new Windows 10 installations, we've got a tool that does this for you. See Download Windows 10. Refx nexus 2.7.4 full + crack win-macosx.
What you need
Step 1 - Format the drive and set the primary partition as active
Step 2 - Copy Windows Setup to the USB flash drive
Step 3 - Install Windows to the new PC
Troubleshooting: file copy fails
This can happen when the Windows image file is over the FAT32 file size limit of 4GB. When this happens:
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