2 not mounted disks and blank named apfs volume
2 not mounted disks in internal hard drive uses nearly 15 gb and I can't mount it. And there is a apfs volume that uses 10 gb of space. How to remove this volumes?
MacBook Pro 13″, macOS 10.14
Question marked as
You appear to have two versions of macOS installed (Mojave & Sonoma), so that will indeed consume storage space. It does appear that you renamed the macOS Sonoma system volume (disk1s4) to either be blank or used characters that are not compatible to be displayed here since your Sonoma installation doesn't look quite right even taking that part into account since the "Data" volume is not even labeled as such.
The "Update" volume is from macOS Catalina and was later changed to have a different name in macOS 11.x+ so I don't know what that is still around.
The Preboot, Recovery, Update, and VM volumes are all required & proper for macOS 10.15+ so that is all expected when running macOS 10.15+.
Theoretically if you only want to boot into Sonoma (assuming the blank & "Sonoma" volumes are an actual Sonoma installation for the system volume & Data volume respectively), then you can just delete the "Mojave" volume if you no longer need it (assuming it is an actual Mojave boot volume and you have already backed up any important data on that Mojave volume).
We are missing too many details about this system's configuration & history to really say what is going on here. The easiest way forward would be to completely erase the entire physical SSD followed by reinstalling macOS & restoring from a backup.
No matter what you do, make sure you have a good backup of all your data from each of those APFS volumes (Sonoma & Mojave).....if you have data that is important to you.
