Dmg To Usb Mac El Capitan

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Create the OS X El Capitan Bootable USB Installer. Connect the USB flash drive to your Mac. Give the flash drive an appropriate name. You can do this by double-clicking the device’s name on the desktop and then type in a new name. Launch Terminal, located in /Applications/Utilities. To create a bootable El Capitan installer drive, you need the El Capitan installer from the Mac App Store and a Mac-formatted drive that’s big enough to hold the installer and all its data. This can be a hard drive, a solid-state drive (SSD), a thumb drive, or a USB stick—an 8GB thumb drive is perfect.

Are you trying to make a bootable installer? Do you have the El Capitan installer downloaded from the App Store? You cannot make a bootable DVD but you can make a bootable flash drive.


Bootable USB Installers for OS X Mavericks, Yosemite, El Capitan, and Sierra


First, review this introductory article: Create a bootable installer for macOS. Second, see this How To outline for creating a bootable El Capitan installer. Simply replace the Terminal command with the one from the preceding article by copying it into the Terminal window. You will need an 8GB or larger USB flash drive that has been partitioned and formatted for use with OS X.

Dmg To Usb Mac El Capitan


Drive Partition and Format

Dmg to usb mac el capitan mac
  1. Open Disk Utility in the Utilities' folder.
  2. After Disk Utility loads select the drive (out-dented entry with the mfg.'s ID and size) from the side list.
  3. Click on the Erase tab in the Disk Utility toolbar. Name the drive, 'MyVolume'. <---- IMPORTANT!
  4. In the drop down panel set the partition scheme to GUID. Set the Format type to Mac OS Extended (Journaled.)
  5. Click on the Apply button and wait for the Done button to activate. When it does click on it.
  6. Quit Disk Utility.


Image Restore DMG to SD Card - MAC OS X. Step 1: Step 1: Converting the DMG. First you need to convert the.dmg image to a raw image: hdiutil convert foo.dmg -format UDTO -o bar.img. Step 2: Step 2:.CDR (raw Image) to.IMG. Step 3: Step 3: Copy IMG to SD Card. Be the First to Share. Apr 25, 2019  Launch Disk Utility and choose the DMG files from the left menu. Click the First Aid option to have disk verification. It will repair and recover DMG files on Mac OSX. If the problem is related to the image structure, you can mount the image when booted into Safe Mode. Of course, try mounting the image in another operation system is also allowed.

Create Installer

Open the Terminal in the Utilities' folder. Choose the appropriate command line (in red) depending upon what OS X installer you want. Paste that entire command line from below at the Terminal's prompt:


Command for macOS High Sierra:

sudo /Applications/Install macOS High Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install macOS High Sierra.app

Command for macOS Sierra:

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sudo /Applications/Install macOS Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install macOS Sierra.app

Command for El Capitan:

Dmg To Usb Mac El Capitan Drive

sudo /Applications/Install OS X El Capitan.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install OS X El Capitan.app

Command for Yosemite:

sudo /Applications/Install OS X Yosemite.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install OS X Yosemite.app

Command for Mavericks:

sudo /Applications/Install OS X Mavericks.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install OS X Mavericks.app


Press RETURN. You will be asked for your admin password. It will not echo to the Terminal window. Then press RETURN again. Wait for the return of the Terminal prompt signifying the process has completed. It takes quite some time to finish. Be patient.

Dmg To Usb Mac El Capitan 10 13

Mar 3, 2018 7:47 PM