"Update" Volume created. How to get rid of?

[xgman]

The mounted Volume called "Update" is left behind after updating to Big Sur and restoring to catalina. I just removed and erased it. Anyone else get rid of it?

 

[viettanium]

same for me, can I delete it?

 

[Ritsuka]

Good lock reinstall everything from scratch soon.

 

[haralds]

This is a new system volume for updates. Do not get rid of it. Big Sur needs it.
Apple has not update Catalina to handle Big Sur volumes properly.

 

[Ernie0878]

The update volume only takes up about 600KB less than 1MB. Leave it be. Used for future updates. If you don't want to see it in Finder, just unmount it using Disk Utility. Mount it back when performing future OS updates.

 

[badboyhalocat]

It's part of the new protections implemented in BS.

Basically, it uses a snapshot as a boot volume and then seals that, so malware can't modify the boot volume. When updating, it makes a new snapshot and seals that.

It also allows for updates to run while the system is online, then a fast reboot to swap which volume (snapshot) is booted from.

 

[Victor Engel]

"The update volume only takes up about 600KB less than 1MB." Mine is using 113 MB. Your numbers seem way off.

 

[HDFan]

In disk utility my com.apple.os.update-F8.... snapshot is ~15 GB.