MobileSync space management?

[BobHas]

Working on freeing up disk space. Using Disk Space Analyzer Pro. In my area on the system disk I came across Library/Application Support/MobileSync/Backup using 144 GB. Is that where my iPhone (and iPad?) backups go? Anything else? I am not clear what to do to manage it. It seems like A LOT. I do routinely do backups (mostly daily) via iTunes (in High Sierra), and have forever more or less.

BTW - until recently iTunes would see the iPhone, oresumably via Bluetooth, when the phone is not connected via USB. Also, every time I do a backup of the phone from iTunes I get a request to enter my login on the Phone. I don't think that was always so. I wondering about both those (the phone is now on iOS 17, but I think the changes were before that. Maybe I changed some setting somewhere?

Thanks.

 

[ferrarr]

You should be able to manage your iOS devices backups in iTunes.

Locate backups of your iPhone, iPad, and iPod touch - Apple Support

Find a list of your iOS or iPadOS backups on your Mac, PC, and iOS or iPadOS device. Learn how to delete backups, copy them, and more.

support.apple.com

 

[BobHas]

I see there the sort of thing I think I want, but it is for Catalina and later and so is managed via Finder. Since this computer is stuck at High Sierra it deals with backups via iTunes and I am not at all sure about it. All that is working for me gets me to ...MobileSync/Backup where I see 10 folders with dates from today back to 2009. The most recent folder has a size of 48 GB. I am not clear. Am I suppose to just delete the older folders? Or is something not right with my Mac/OS?

 

[BobHas]

Upon further review I think maybe I have something really odd/wrong going on on this machine. I have a newer one coming that I can update to newer releases of MacOS. I think I will try to resist trying to "fix" this one until I have the new one and manage to migrate the system disk.