#MAC OS DISK UTILITY RESTORE HOW TO#
#MAC OS DISK UTILITY RESTORE INSTALL#
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My DMG file mounted as disk9 which created synthetised disk10.

finally, use this synthetised disk as source for your asr restore operation.second, figure out which /dev/diskN corresponds to the synthetised disk created in step 1.first, mount your DMG file => it creates a synthetised disk.One might expect that specifying a DMG image file as source and some existing empty APFS container as target should do the Source could be a DMG image file path or some existing disk in the form of Scenarios related to previous filesystems.

#MAC OS DISK UTILITY RESTORE HOW TO#

asr supports different ways how to specify source and target to cover When restoring you specify source and target. You can man asr to read the docs, especially the sections Clone (restore) the source containerДisk Utility.app seems to be using asr command under the hood. Space on the main drive and a macOS installer at hand. This is quite easily doable just by clicking in Disk Utility.app if you have enough

#MAC OS DISK UTILITY RESTORE INSTALL#

I would recommend using a recent macOS system installed on an external drive and boot from there.ДЄlternatively, you can downsize the existing APFS container, create a new APFS container on your main disk and install a Oh, what to do if I don't have a secondary system? RecoveryOS resides in one of APFS Volumes in the container you want to image so this is not possible, I think (not tested). Better finish reading the article first.Д¬an I boot into RecoveryOS to do this DMG image? Before making image you might consider deleting all existing snapshots in all APFS Volumes in theД¬ontainer. You should see an available option to 'Image from container diskN'. It should have a name like 'container diskN' and none of its volumes should be currently mounted. And then right-click the whole APFS container containing your Left sidebar of Disk Utility.app switch to 'Show All Devices'. You must be booted into some other system than your main system. This can be done comfortably from Disk Utility.app. Source DMG must not contain any APFS Volume with APFS snapshots. Play well with current Disk Utility.app, so you have to drop to command-line and force using legacy method of restoring the ' APFS Volume Groups', a new feature introduced in Catalina does not Source of restore operation must be a synthetised disk mounted from the DMG.

There are major tricks how to make it work, the second one quite recent and third one is its consequence: Trick 1 This information is relevant for Catalina (I'm currently running macOS 10.15.1).

it is possible to restore this DMG image into empty APFS container and get a bootable copy of the original system.

Needed for complete restore (the DMG contains OS, OS Data, Preboot, Recovery and VM volumes)

it is possible to create a DMG image from existing APFS container with macOS Catalina installation including metadata.

This took way too many hours of my life I will never get back.

#MAC OS DISK UTILITY RESTORE MAC#

I upgraded my late 2014 Mac Mini withДЄ shiny new 1TB SSD.

Then choose to reinstall the OS and the disk will not be greyed out this time.Today I wanted to move existing APFS-resident macOS Catalina installation to a new disk.

Once it loads, go into Disk Utilities and Erase the main drive and select the journaling formate style.

Step 2 (now that you are booted on a the USB stick and not the main HD):

When itвЂ™s done, insert your USB drive into any Mac, then launch the installer by holding down the Option key.

Select your flash drive from the drop-down menu.

This is should be located in your Applications folder.

Open Disc Creator and click the вЂњSelect the OS X InstallerвЂќ button.

If you have any other data on that flash drive, back it up now, because the installer will delete everything on it.

Insert an 8GB (or larger) flash drive.

#MAC OS DISK UTILITY RESTORE DOWNLOAD#

Download the macOS Sierra installer and Disk Creator.

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The easiest way to create a USB flash installer is with the free program, Disk Creator. You need to create a USB flash installer, then reformate the drive then reinstall. What the issue is, you are trying to modify the drive you are currently working on which it doesn't like. I'm writing this as I search for it and found solutions and none of them worked and I noticed I wasn't the only one.Д®asy solution is hold down command + R and get into disk utility, select the main HD and select File > 'Enable journaling' but if you are like me, it was greyed out.

Mac os disk utility restore