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How can I merge Macintosh HD data volumes in macOS Catalina?
How can I merge “Macintosh HD – Data” volumes in macOS Catalina?
- Copy your old data to an external drive, blow away your old data container/partition from the SSD, then move the data from the external back to the ‘new’ data partition.
- Blow away Catalina, restore the Mojave backup, then upgrade again.
What is Macintosh HD data Catalina?
Your files and data are stored in another volume named Macintosh HD – Data. In the Finder, both volumes appear as Macintosh HD. The Disk Utility app in macOS Catalina shows that Macintosh HD is the read-only system volume and Macintosh HD – Data contains the the rest of your files and data.
How do I clean up other volumes on my Mac?
3. Delete the extra volume
- Open Disk Utility on your Mac.
- Select the APFS Volume you want to remove.
- Click the Delete Volume button ‘—’ in the toolbar. If the button is dimmed, the selected volume is in use, which means you can’t delete it. To delete this volume, you need to enter Disk Utility in macOS Recovery.
How do I merge back partitions on a Mac?
Either use Carbon Copy Cloner to backup all the hard drives data before merging. Select the partition you want to merge and click on “-” button. For instance, you have 3 partitions namely – Macintosh HD, Volume 1 and Volume 2. Then first select Volume 1 and click on the minus sign (-) to remove this partition.
How do I merge volumes on a Mac?
Merge Mac partitions to single hard drive volume
- Select the partition you want to merge and click on “-” button.
- Once Volume 1 is removed, resize Macintosh HD to takeover the spaces left by Volume 1.
- Again resize Macintosh HD to take over unused spaces left by Volume 2.
Why does the macOS Catalina installer split data and?
In other words, Catalina protects the OS in its own read-only volume. The Catalina installer renames the startup volume to “Macintosh HD – Data” (assuming your boot volume has the default title “Macintosh HD”) and assigns it the Data role. The installer also creates a brand new volume with the System role.
Is there a second volume for macOS Catalina?
When you upgrade to Catalina, a second volume is created, and some files may move to a Relocated Items folder. macOS Catalina runs on a dedicated, read-only system volume called Macintosh HD.
Why does Catalina split data into two volumes?
In order for the two volumes to appear as one, Catalina links them together using a new Apple feature, known as firmlinks. This lets multiple volumes integrate and function as one.
Why do I have a new data disk in Catalina?
By using new APFS features in Catalina, Apple can create a “volume group” that links the system and Data volumes together as a single item in function, and use “firmlinks” that allow cross-volume symbolic links without duplicating files, further tying the two logically distinct items together.