After Big Sur clean install

frank@Franciss-iMac ~ % diskutil list
/dev/disk0 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *4.0 TB     disk0
   1:                        EFI â ¨EFIâ ©                     209.7 MB   disk0s1
   2:                 Apple_APFS â ¨Container disk1â ©         4.0 TB     disk0s2

/dev/disk1 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +4.0 TB     disk1
                                 Physical Store disk0s2
   1:                APFS Volume â ¨MacOS - Dataâ ©            5.4 GB     disk1s1
   2:                APFS Volume â ¨Prebootâ ©                 293.7 MB   disk1s2
   3:                APFS Volume â ¨Recoveryâ ©                613.8 MB   disk1s3
   4:                APFS Volume â ¨VMâ ©                      1.1 MB     disk1s4
   5:                APFS Volume â ¨MacOSâ ©                   15.1 GB    disk1s5
   6:              APFS Snapshot â ¨com.apple.os.update-...â © 15.1 GB    disk1s5s1