Disk appears 2 times under disk utility (macOS Catalina)

I have this issue too, and I have found that after installing Catalina on my 2015 MacBook Pro as well, after I had used the Migration assistant to transfer data from my other Mac, the duplicate drive had appeared in my Finder sidebar. According to Disk Utility, the mount point for "abcd" and "abcd - Data" is '/' and '/System/Volumes/Data' respectively.

Below, I attached images from the disk utility to assist with any needed information.

Thanks in advance for any help!

It is new to Catalina. The System files are stored on abcd. It is mounted Read-only so nothing can modify the system while it is running.

The - Data Volume contains other parts of the system and non-system apps and your data.

The Finder should make that distinction disappear and you only see one Volume. If you do see both in Finder, I would ignore the system volume.

sandrawatson wrote:

I am in the same situation but only a small number of my photos are showing up in the photos app. what do I need to do to get all of my photos to show up?

You really need to ask this question in full in the photos forum

100% normal. Please read Disk Utility User Guide for Mac - Apple to gain a better understanding of your new file system

I am in the same situation but only a small number of my photos are showing up in the photos app. what do I need to do to get all of my photos to show up?