Diskutility, show hidden partitions in mac os Catalina?

Open Disk Utility. In the upper left corner of the window is a dropdown menu labeled, "View". Click on it and select the option, "Show all Devices". However, if you want to see all of the hidden partitions (you really don't need to,) then open Terminal in the Utilities folder. At the prompt enter, "diskutil list", which will display all of the partitions on all of your connected drives.

Apple has enacted many new security precautions since the release of Lion. Many of these are intended to prevent the user from damaging the system by trying to edit, move, or delete files needed by the system, thus, rendering the system unbootable. There is nothing that the user need know about the Recovery HD or the hidden partitions created by APFS. That was to restrict user access to something they may change or delete that should have been left alone.

Disk Utility will not provide a means to see or explore these hidden components of macOS. However, it is possible to make all sorts of alterations, good or bad, using Terminal and knowing how to use Terminal commands.

There is no third-party disk utility that I have come across that does what you asked. Doesn't mean one isn't out there but I have yet to discover it.

Even the repair techs don't mess with the OS. They just reformat the drive and perform a clean install of macOS. Often that is not something the user wanted done but you would be surprised how many problems can be fixed by an Erase and Install of the OS, whether that be macOS, Windows, Linux, etc. The typical user doesn't know their way around the OS but try to modify it. Then things stop working properly. The user never holds themselves responsible, rather they complain that the company that makes the computer or the OS is responsible. Typical users don't realize just how much damage may be caused by what seems to be a simple change. They also get into trouble using a tool like Terminal without knowing what they are doing.

Disk Utility does not show the hidden partitions used by APFS. The Terminal command, diskutil, will. To see them use the command I posted earlier. It's not difficult, and you need not know a thing about the command line or Terminal. Open Terminal, type in the command, diskutil list, and press RETURN. That's all there is to it.

There is no need to see these partitions nor edit them. That's why they are hidden. If there is something you wish to know about them, then ask here. What are you looking for?

Stephen Zelley wrote:

you could type to enable a "debug" menu, which would then allow the ability to show hidden partitions

I was just asking if their was a way to do that with the new diskutility,

Not that I am aware of in macOS Catalina. Disk Utility changes radically with each macOS release.

easy enough from the Terminal.app copy and paste:

diskutil list internal

the following output —shows all volumes:

MacBook-Pro ~ % diskutil list internal

/dev/disk0 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *1.0 TB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_APFS Container disk1 1000.0 GB disk0s2

/dev/disk1 (synthesized):

#: TYPE NAME SIZE IDENTIFIER

0: APFS Container Scheme - +1000.0 GB disk1

Physical Store disk0s2

1: APFS Volume Macintosh HD - Data 230.1 GB disk1s1

2: APFS Volume PreBoot 24.3 MB disk1s2

3: APFS Volume Recovery 525.4 MB disk1s3

4: APFS Volume VM 3.2 GB disk1s4

5: APFS Volume Macintosh HD 11.0 GB disk1s5

MacBook-Pro ~ %