May 07, 2021 Why can’t Catalina be installed on Macintosh HD? In most cases, macOS Catalina cannot be installed on Macintosh HD, because it doesn’t have enough disk space. If you install Catalina on top of your current operating system, the computer will keep all the files and still need free space for Catalina. Backup your disk and run a clean install. Oct 11, 2019 To remove the redundant “Macintosh HD data” before a fresh Catalina install: In recovery mode disk utility there is the VOLUME + - in the top of the box. Select your “Macintosh HD data” and then click - This will delete it. Oct 01, 2019 After installing Catalina, I have my usual Macintosh HD drive, but I also now have two additional drives listed, both named Macintosh HD – Data. This occurred after a clean install (erasing and formatting drive and then doing a migration from Time Machine.
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In most cases, macOS Catalina cannot be installed on Macintosh HD, because it doesn’t have enough disk space. If you install Catalina on top of your current operating system, the computer will keep all the files and still need free space for Catalina. Backup your disk and run a clean install.
How to free up storage space manually
How to increase your storage space on a PC
Run Disk Cleanup To access it, right-click one of your hard drives in the Computer window and select Properties. (Alternatively you can just search for Disk Cleanup in the Start Menu.) Click the Disk Cleanup button in the disk properties window. Select the types of files you want to delete and click OK.
How to check your Mac storage via “About This Mac”
Generally, the temporary files on your Mac accumulate so much that it takes a chunk of storage, take the Google Chrome for instance. Your Mac’s drive probably has temporary files you don’t need. These files often take up storage for no good reason, and this is where you can gain some space on your Mac.
The Mail folder grows so large because the Mail app downloads every single email and attachment to store them on your Mac. Attachments won’t be automatically downloaded, but will be stored online until you use them — that’ll save some space.
Attachments in Mail can occupy several gigabytes of disk space on your Mac. Manually removing them to free up space can be a long and laborious process. If you do decide to use a manual method, deleting them from within Mail is the safest option. However, it’s much easier to use CleanMyMac X to do the job.
The SIP or System Integrity Protection is a mechanism that is enabled in Mac with versions macOS 10.12 and above. It makes it impossible for the user to remove any system app on your Mac, and in this case, the Mail app. You can disable SIP by just following these steps: Enter Recovery Mode on your Mac.
If you want to open the Mail app and go to Preferences > Accounts, you should see your Gmail account listed – if it is, simply highlight it and click the “enable” to un-enable it. If you want to get rid of it forever, click the minus sign at the bottom.
The Steps for Deleting and Reinstalling Apple Mail are as Suggested below : Go to the System preferences Select the Apple mail and move it to Recycle bin or Delete , if you need a copy of the older mails . then keep a back up of the file . After the process , you will be asked for New Set up.