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Insert the flash drive into the USB port of a Mac computer that has the DMG file you need. Launch Finder. After a couple of seconds the drive appears in the left menu of the Finder menu. If Mac OS X doesn't recognize the flash drive, it prompts you to format it and the Disk Utility app opens. Nov 15, 2018 WizDMG fills a huge gap in Windows not supporting DMG files. It is a desktop utility supporting Windows and Mac. It allows you to directly burn DMG files to disk in order to create a bootable macOS Mojave installer or a boot disk for any macOS version. WizDMG offers an intuitive interface with no clutter and full functionality to handle DMG files.
Disk Utility User Guide
You can restore a disk image to a disk. To do this, you first need to erase the disk. If the disk image has multiple partitions, you must restore each partition individually.
Restore a disk image with a single volume to a disk
- In the Disk Utility app on your Mac, select the volume that you want to restore in the sidebar, then click the Restore button .This is the volume that is erased and becomes the exact copy.
- Click the Restore pop-up menu, then choose the volume you want to copy.If you’re restoring from a disk image, click the Image button, then navigate to that disk image.
- Click Restore.
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Restore a disk image with multiple volumes to a disk
To restore a disk image with multiple volumes to a disk, you must partition the destination disk, then restore each volume individually.
- In the Finder on your Mac, double-click the disk image to open it.The disk image’s volumes appear as disks in the Finder.
- In the Disk Utility app, select the disk in the sidebar, click the Partition button , then partition the destination disk.The destination disk must have as many partitions as the disk image, and each of the disk’s partitions must be at least as large as the corresponding partition in the disk image. See Partition a physical disk in Disk Utility on Mac.
- In the sidebar, select the volume that you want to restore, then click the Restore button .This is the volume that is erased and becomes the exact copy.
- Do one of the following:
- Restore from a volume: Click the “Restore from” pop-up menu, then choose the volume you want to copy.
- Restore from a disk image: Click Image, choose the disk image you want to copy, then click Open.
- Click Restore.
- Repeat steps 3–5 for each remaining partition.
See alsoCreate a disk image using Disk Utility on MacAdd a checksum to a disk image using Disk Utility on MacVerify that a disk image’s data isn’t corrupted using Disk Utility on Mac
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.
Drive Partition and Format
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- Open Disk Utility in the Utilities' folder.
- After Disk Utility loads select the drive (out-dented entry with the mfg.'s ID and size) from the side list.
- Click on the Erase tab in the Disk Utility toolbar. Name the drive, 'MyVolume'. <---- IMPORTANT!
- In the drop down panel set the partition scheme to GUID. Set the Format type to Mac OS Extended (Journaled.)
- Click on the Apply button and wait for the Done button to activate. When it does click on it.
- Quit Disk Utility.
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:
sudo /Applications/Install macOS Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install macOS Sierra.app
Command for El Capitan:
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
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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.
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Sep 13, 2018 1:16 PM