How to get rid of the Macintosh HD - Data disk image
I want to donate my MacBook Air 2013 and before doing so, I of course wanted to delete everything. I restarted in Safe mode, launched Disk Utilities, erased both the "Macintosh HD" and "Macintosh HD - Date" drives, quit Disk Utilities and rebooted. After about an hour, Mac OSX Catalina was installed and everything is fine. But now everytime I restart, I get three disk images: "Macintosh HD" and "Macintosh HD - Date" and "Update". No matter how often I eject the last two, they keep coming back. I understand that the Data disk is essential, but is there a way to hide those icons so as not to confuse the next user, who may be a neophyte when it comes to the Mac? Thanks.
P.S.: In case it matters, I was running Big Sur before I deleted the entire content of the whole hard drive.
Daniel
MacBook Air 13″, 11.6