Here is what appears on the kernel log (from the “dmesg” command):
usb 2-2: new SuperSpeed USB device number 5 using etxhci_hcd_131016
scsi18 : usb-storage 2-2:1.0
scsi 18:0:0:0: Direct-Access ST310003 33AS 0X06 PQ: 0 ANSI: 6
sd 18:0:0:0: [sde] 1953525168 512-byte logical blocks: (1.00 TB/931 GiB)
sd 18:0:0:0: Attached scsi generic sg4 type 0
sd 18:0:0:0: [sde] Write Protect is off
sd 18:0:0:0: [sde] Mode Sense: 27 00 00 00
scsi 18:0:0:1: Direct-Access Hitachi HDS5C3030BLE630 0X06 PQ: 0 ANSI: 6
sd 18:0:0:0: [sde] No Caching mode page present
sd 18:0:0:0: [sde] Assuming drive cache: write through
sd 18:0:0:1: [sdf] Very big device. Trying to use READ CAPACITY(16).
sd 18:0:0:1: Attached scsi generic sg5 type 0
sd 18:0:0:0: [sde] No Caching mode page present
sd 18:0:0:0: [sde] Assuming drive cache: write through
sd 18:0:0:1: [sdf] 5860533168 512-byte logical blocks: (3.00 TB/2.72 TiB)
sd 18:0:0:1: [sdf] 4096-byte physical blocks
sd 18:0:0:1: [sdf] Write Protect is off
sd 18:0:0:1: [sdf] Mode Sense: 27 00 00 00
scsi 18:0:0:2: Direct-Access SAMSUNG HD204UI 0X06 PQ: 0 ANSI: 6
sd 18:0:0:1: [sdf] No Caching mode page present
sd 18:0:0:1: [sdf] Assuming drive cache: write through
sd 18:0:0:2: Attached scsi generic sg6 type 0
scsi 18:0:0:3: Direct-Access WDC WD20 EARX-00PASB0 0X06 PQ: 0 ANSI: 6
sd 18:0:0:2: [sdg] 3907029168 512-byte logical blocks: (2.00 TB/1.81 TiB)
sd 18:0:0:1: [sdf] Very big device. Trying to use READ CAPACITY(16).
sd 18:0:0:2: [sdg] Write Protect is off
sd 18:0:0:2: [sdg] Mode Sense: 27 00 00 00
sd 18:0:0:3: [sdh] 3907029168 512-byte logical blocks: (2.00 TB/1.81 TiB)
sd 18:0:0:1: [sdf] No Caching mode page present
sd 18:0:0:1: [sdf] Assuming drive cache: write through
sd 18:0:0:3: Attached scsi generic sg7 type 0
sd 18:0:0:2: [sdg] No Caching mode page present
sd 18:0:0:2: [sdg] Assuming drive cache: write through
sd 18:0:0:3: [sdh] Write Protect is off
sd 18:0:0:3: [sdh] Mode Sense: 27 00 00 00
sde: sde1 sde2 sde3
sd 18:0:0:3: [sdh] No Caching mode page present
sd 18:0:0:3: [sdh] Assuming drive cache: write through
sd 18:0:0:2: [sdg] No Caching mode page present
sd 18:0:0:2: [sdg] Assuming drive cache: write through
sd 18:0:0:0: [sde] No Caching mode page present
sd 18:0:0:0: [sde] Assuming drive cache: write through
sd 18:0:0:0: [sde] Attached SCSI disk
sd 18:0:0:3: [sdh] No Caching mode page present
sd 18:0:0:3: [sdh] Assuming drive cache: write through
sdf: sdf1 sdf2 sdf3
sd 18:0:0:1: [sdf] Very big device. Trying to use READ CAPACITY(16).
sdg: sdg1 sdg2 sdg3
sd 18:0:0:1: [sdf] No Caching mode page present
sd 18:0:0:1: [sdf] Assuming drive cache: write through
sd 18:0:0:1: [sdf] Attached SCSI disk
sdh: sdh1 sdh2 sdh3
sd 18:0:0:2: [sdg] No Caching mode page present
sd 18:0:0:2: [sdg] Assuming drive cache: write through
sd 18:0:0:2: [sdg] Attached SCSI disk
sd 18:0:0:3: [sdh] No Caching mode page present
sd 18:0:0:3: [sdh] Assuming drive cache: write through
sd 18:0:0:3: [sdh] Attached SCSI disk
FAT-fs (sde2): invalid media value (0x00)
FAT-fs (sde2): Can't find a valid FAT filesystem
ufsd:
ufsd:======NTFSBoot->le(0)======
ufsd:Signature : ?????
ufsd:RWBlocks : 0x74662d60 x 0x200, sde2, rw
ufsd:SectorsPerVolume : 0x0 x 0x0
ufsd:SectorsPerCluster : 0x0
ufsd:MFT : 0x200
ufsd:MFTMirr : 0x0
ufsd:Record size : 0
ufsd:Index size : -24
ufsd:Magic : 0x00
ufsd:===========================
ufsd:Invalid NTFS boot signature
ufsd:
ufsd:=== HfsVolumeHeader->le =========
ufsd:Signature : (null)
ufsd:Version : 0
ufsd:Attributes : 0x0
ufsd:LastMounted : (null)
ufsd:BytesPerBlock : 0x0
ufsd:Invalid HFS+ signature at 2
ufsd: failed to mount "sde2"
ufsd:
ufsd:======NTFSBoot->le(0)======
ufsd:Signature :
ufsd:RWBlocks : 0x40000 x 0x200, sde3, rw
ufsd:SectorsPerVolume : 0x0 x 0x0
ufsd:SectorsPerCluster : 0x0
ufsd:MFT : 0x0
ufsd:MFTMirr : 0x0
ufsd:Record size : 0
ufsd:Index size : 0
ufsd:Magic : 0x00
ufsd:===========================
ufsd:Invalid NTFS boot signature
ufsd:
ufsd:=== HfsVolumeHeader->le =========
ufsd:Signature : H+
ufsd:Version : 4
ufsd:Attributes : 0x80002100
ufsd:LastMounted : HFSJ
ufsd:BytesPerBlock : 0x1000
ufsd:RWBlocks : 0x40000 x 0x200, sde3, rw
ufsd:TotalSectors : 0x40000
ufsd:TotalBlocks : 0x8000
ufsd:FilesCount : 3
ufsd:FoldersCount : 2
ufsd:Serial number : b05f6397-6f5545a8
ufsd:ModifyDate : 0xd0002841
ufsd:FreeBlocks : 0x74fb
ufsd:NextCatalogId : 0x1a
ufsd:WriteCount : 0x1
ufsd:Allocation : 0x00000001 [0x00000001 + 0x1)
ufsd:Extens : 0x00000100 [0x00000803 + 0x100)
ufsd:Catalog : 0x00000100 [0x00001403 + 0x100)
ufsd:Attributes : 0x00000100 [0x00000903 + 0x100)
ufsd:AltHdrOffset : 0x7fffc00
ufsd:===========================
ufsd:VolumeHeader is accepted as HFS+ 4.0 of size 0.12 Gb
ufsd:Journal info:
ufsd: flags: 1
ufsd: offset: 3000 (18)
ufsd: size: 800000 (4000)
ufsd:Journal header:
ufsd: magic: 4a4e4c78 (JNLx)
ufsd: endian: 12345678
ufsd: start: 25000
ufsd: end: 33000
ufsd: size: 800000
ufsd: blhdr: 1000
ufsd: chksum: 82f2d6a
ufsd: jhdr: 1000
ufsd:HFS journal: sector size 200 does not match journal header size 1000
ufsd: seq: d65406,d55568
ufsd:[25 - 33) sz=800, blhdr=1000, jhdr=1, 0
ufsd:Reinit volume for new sector size
ufsd:
ufsd:=== HfsVolumeHeader->le =========
ufsd:Signature : H+
ufsd:Version : 4
ufsd:Attributes : 0x80002100
ufsd:LastMounted : HFSJ
ufsd:BytesPerBlock : 0x1000
ufsd:RWBlocks : 0x8000 x 0x1000, sde3, rw
ufsd:TotalSectors : 0x8000
ufsd:TotalBlocks : 0x8000
ufsd:FilesCount : 3
ufsd:FoldersCount : 2
ufsd:Serial number : b05f6397-6f5545a8
ufsd:ModifyDate : 0xd0002841
ufsd:FreeBlocks : 0x74fb
ufsd:NextCatalogId : 0x1a
ufsd:WriteCount : 0x1
ufsd:Allocation : 0x00000001 [0x00000001 + 0x1)
ufsd:Extens : 0x00000100 [0x00000803 + 0x100)
ufsd:Catalog : 0x00000100 [0x00001403 + 0x100)
ufsd:Attributes : 0x00000100 [0x00000903 + 0x100)
ufsd:AltHdrOffset : 0x7fffc00
ufsd:===========================
ufsd:VolumeHeader is accepted as HFS+ 4.0 of size 0.12 Gb
ufsd:Journal info:
ufsd: flags: 1
ufsd: offset: 3000 (3)
ufsd: size: 800000 (800)
ufsd:Journal header:
ufsd: magic: 4a4e4c78 (JNLx)
ufsd: endian: 12345678
ufsd: start: 25000
ufsd: end: 33000
ufsd: size: 800000
ufsd: blhdr: 1000
ufsd: chksum: 82f2d6a
ufsd: jhdr: 1000
ufsd: seq: d65406,d55568
ufsd:[25 - 33) sz=800, blhdr=1000, jhdr=1, 0
ufsd:HFS journal is not empty!
ufsd:Replay: from: 25 to: 33 (joffset 3)
ufsd:Sequence number: d55568, 1 blocks
ufsd:Replay: adding block 26, 1 => 1404
ufsd:Sequence number: d55569, 4 blocks
ufsd:Replay: replacing block 26, by 28, 1 => 1404
ufsd:Replay: adding block 29, 1 => 1403
ufsd:Replay: adding block 2a, 1 => 0
ufsd:Replay: adding block 2b, 1 => 1
ufsd:Sequence number: d5556a, 4 blocks
ufsd:Replay: replacing block 28, by 2d, 1 => 1404
ufsd:Replay: replacing block 29, by 2e, 1 => 1403
ufsd:Replay: replacing block 2a, by 2f, 1 => 0
ufsd:Replay: replacing block 2b, by 30, 1 => 1
ufsd:Sequence number: d5556b, 1 blocks
ufsd:Replay: replacing block 2d, by 32, 1 => 1404
ufsd:Replay: replaying 4 blocks
ufsd:Replay: replaying block 32, 1 => 1404
ufsd:Replay: replaying block 2e, 1 => 1403
ufsd:Replay: replaying block 2f, 1 => 0
ufsd:Replay: replaying block 30, 1 => 1
ufsd:Total replayed 4
ufsd:Journal replay done.
ufsd:Journal is deactivated
ufsd:Reinit volume after replaying
ufsd:
ufsd:=== HfsVolumeHeader->le =========
ufsd:Signature : H+
ufsd:Version : 4
ufsd:Attributes : 0x80002100
ufsd:LastMounted : HFSJ
ufsd:BytesPerBlock : 0x1000
ufsd:RWBlocks : 0x8000 x 0x1000, sde3, rw
ufsd:TotalSectors : 0x8000
ufsd:TotalBlocks : 0x8000
ufsd:FilesCount : 3
ufsd:FoldersCount : 2
ufsd:Serial number : b05f6397-6f5545a8
ufsd:ModifyDate : 0xd0002841
ufsd:FreeBlocks : 0x74fb
ufsd:NextCatalogId : 0x1a
ufsd:WriteCount : 0x1
ufsd:Allocation : 0x00000001 [0x00000001 + 0x1)
ufsd:Extens : 0x00000100 [0x00000803 + 0x100)
ufsd:Catalog : 0x00000100 [0x00001403 + 0x100)
ufsd:Attributes : 0x00000100 [0x00000903 + 0x100)
ufsd:AltHdrOffset : 0x7fffc00
ufsd:===========================
ufsd:VolumeHeader is accepted as HFS+ 4.0 of size 0.12 Gb
ufsd:Journal info:
ufsd: flags: 1
ufsd: offset: 3000 (3)
ufsd: size: 800000 (800)
ufsd:Journal header:
ufsd: magic: 4a4e4c78 (JNLx)
ufsd: endian: 12345678
ufsd: start: 33000
ufsd: end: 33000
ufsd: size: 800000
ufsd: blhdr: 1000
ufsd: chksum: 8cd2c89
ufsd: jhdr: 1000
ufsd: seq: d752a4,d65406
ufsd:[33 - 33) sz=800, blhdr=1000, jhdr=1, 0
ufsd:jnl_op.load(d0ac6e00, 3000)
ufsd:Journal is activated
ufsd:Reinit volume after replaying
ufsd:ExtTree nodes: total 100, free ff, size 1000
ufsd:CatTree nodes: total 100, free fe, size 1000
ufsd:Detected case-insensitive catalog
ufsd:AttTree nodes: total 80, free 7e, size 2000
ufsd:Loading Bitmap...
ufsd:Bitmap: Bits 8000, frames 1 x 1000, free 74fb
ufsd:Zone: [1503,2503) - 1000 clusters
ufsd:sizeof(CFileSystemHfs) = 3896
ufsd: "mount" (sde3): force nocase=1
ufsd:Label : Boot OS X
ufsd:FileLinkFolderId 12, DirLinkFolderId 13
ufsd: "mount" (sde3): is mounted as HFSJ (journal replayed)
ufsd:ioctl:OnGetVolumeInfo
ufsd:GetVolumeInfo: Free = 0, State = clean
All the four disks are recognized but only the first one is accessible. That is why ufsd only mounts the partitions located in the sde device (first HDDs installed on the enclosure).