Hello all, I have a late-2012 iMac with a 3TB Fusion Drive. A couple of days ago, I decided to back up everything and install a fresh copy of macOS. My system shipped with Mountain Lion and I had done in-place upgrades for 4 releases and decided to wipe everything and start over. I have a functioning install of macOS Sierra on my system now, but am scared I might have done something wonky with my HD. In Disk Utility, I see my HD with 2 partitions a 337GB BOOTCAMP partition which I set up, and a 2.77TB Macintosh HD partition. Everything looks OK. However, when I run diskutil list, I see that something doesn't look quite right. Spoiler /dev/disk0 (internal, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *3.0 TB disk0 1: EFI EFI 209.7 MB disk0s1 2: Apple_CoreStorage Macintosh HD 1.9 TB disk0s2 3: Apple_Boot Recovery HD 650.1 MB disk0s3 4: Microsoft Basic Data BOOTCAMP 338.1 GB disk0s4 5: Apple_CoreStorage Macintosh HD 801.4 GB disk0s5 6: Apple_Boot Boot OS X 134.2 MB disk0s6 /dev/disk1 (internal, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *121.3 GB disk1 1: EFI EFI 209.7 MB disk1s1 2: Apple_CoreStorage Macintosh HD 121.0 GB disk1s2 3: Apple_Boot Boot OS X 134.2 MB disk1s3 /dev/disk2 (internal, physical): #: TYPE NAME SIZE IDENTIFIER 0: FDisk_partition_scheme *31.9 GB disk2 1: Windows_FAT_32 SDCARD 31.9 GB disk2s1 /dev/disk3 (internal, virtual): #: TYPE NAME SIZE IDENTIFIER 0: Macintosh HD +2.8 TB disk3 Logical Volume on disk1s2, disk0s2, ... D6807E65-EF0C-49CD-9C8D-08BF8557E678 Unencrypted Fusion Drive /dev/disk4 (external, physical): #: TYPE NAME SIZE IDENTIFIER 0: FDisk_partition_scheme *15.5 GB disk4 1: Apple_HFS Install macOS Sierra 15.5 GB disk4s1 /dev/disk5 (external, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *3.0 TB disk5 1: EFI EFI 314.6 MB disk5s1 2: Apple_HFS Seagate Backup+ 3.0 TB disk5s2 /dev/disk6 (disk image): #: TYPE NAME SIZE IDENTIFIER 0: Apple_partition_scheme +100.7 MB disk6 1: Apple_partition_map 32.3 KB disk6s1 2: Apple_HFS DiskDrill 100.7 MB disk6s2 I see two Macintosh HD partitions listed, one at 1.9TB and one at 801.4GB. I'm also unsure why I have a Apple_Boot Recovery HD and a Apple_Boot Boot OS X partition. Should both of these be present? Does this diskutil look out of the ordinary? I'm unsure if I have a problem I need to look into fixing, or if there is a normal explanation why I have two Macintosh HD partitions listed. Thanks in advance for any help anyone can provide.