I'm preparing to install OS Catalina after erasing my new MacBook Pro, in preparation for restoring from a time machine backup from my old MBP using OS Mojave. I was just faced with question: install on Macintosh HD or on Macintosh HD-Data? Which should I choose?
MacBook Pro 15”, macOS 10.14
The OS is located on the "Macintosh HD" volume. User data is located on the "Macintosh HD - Data" volume.
If you erased the drive volume, then why not erase the whole physical drive instead? If the physical drive is not seen in Disk Utility, then click on "View" and select "Show all devices" option so that the physical drive appears in the left pane of Disk Utility. I don't know if this is an option when booted from the local Recovery Mode (Command + R), but it should be an option when booted to Internet Recovery Mode (Command + Option + R) or from a bootable macOS USB installer. For Catalina the drive must be erased as GUID partition and APFS (top option).
The OS is located on the "Macintosh HD" volume. User data is located on the "Macintosh HD - Data" volume.
If you erased the drive volume, then why not erase the whole physical drive instead? If the physical drive is not seen in Disk Utility, then click on "View" and select "Show all devices" option so that the physical drive appears in the left pane of Disk Utility. I don't know if this is an option when booted from the local Recovery Mode (Command + R), but it should be an option when booted to Internet Recovery Mode (Command + Option + R) or from a bootable macOS USB installer. For Catalina the drive must be erased as GUID partition and APFS (top option).
install OS on Mac HD or Mac HD-Data?
