mount unclean shutdown hfsplus drive

[Dave Stevens]

Quoting steve reilly <sfreilly at roadrunner.com>:

> hi all,

maybe this thread will help

Dave

>
>
> working on this macbook trying to get data off the drive, having a bear
> of a time. any help or clue would be appreciated, ive about exhausted
> all my resources and googlefu......havent tried gparted livecd yet, but
> have a feeling ill get the same results.
>
>
>
> **dmesg
>
> [105923.563165] usb-storage: waiting for device to settle before scanning
> [105928.560321] usb-storage: device scan complete
> [105928.561231] scsi 8:0:0:0: Direct-Access     Seagate  Desktop
>    0130 PQ: 0 ANSI: 4
> [105928.561984] sd 8:0:0:0: Attached scsi generic sg2 type 0
> [105928.565277] sd 8:0:0:0: [sdb] 312581808 512-byte logical blocks:
> (160 GB/149 GiB)
> [105928.567461] sd 8:0:0:0: [sdb] Write Protect is off
> [105928.567467] sd 8:0:0:0: [sdb] Mode Sense: 2f 08 00 00
> [105928.567472] sd 8:0:0:0: [sdb] Assuming drive cache: write through
> [105928.569063] sd 8:0:0:0: [sdb] Assuming drive cache: write through
> [105928.569073]  sdb:
> [105928.945947] Alternate GPT is invalid, using primary GPT.
> [105928.945955]  sdb1 sdb2
> [105928.948718] sd 8:0:0:0: [sdb] Assuming drive cache: write through
> [105928.948726] sd 8:0:0:0: [sdb] Attached SCSI disk
> [105929.540243] hfs: Filesystem was not cleanly unmounted, running
> fsck.hfsplus is recommended.  mounting read-only.
> [105929.547758] hfs: failed to load extents file
> [106046.044209] hfs: unable to find HFS+ superblock
>
> **try to mount
>
> steve at steve-laptop:/mnt$ sudo mount -t hfsplus /dev/sdb2 /mnt/macdrive
> mount: wrong fs type, bad option, bad superblock on /dev/sdb,
>         missing codepage or helper program, or other error
>         In some cases useful info is found in syslog - try
>         dmesg | tail  or so
>
>
> **try to force mount
>
> steve at steve-laptop:/mnt$ sudo mount -o force -t hfsplus /dev/sdb2
> /mnt/macdrive
> mount: wrong fs type, bad option, bad superblock on /dev/sdb,
>         missing codepage or helper program, or other error
>         In some cases useful info is found in syslog - try
>         dmesg | tail  or so
>
>
> **try to fsck
>
> steve at steve-laptop:/mnt$ sudo fsck.hfsplus -f /dev/sdb2
> ** /dev/sdb2
> ** Checking HFS Plus volume.
>     Invalid B-tree node size
> (3, 0)
> ** Volume check failed.
>
>
>
> **fdisk -l
>
> WARNING: GPT (GUID Partition Table) detected on '/dev/sdb'! The util
> fdisk doesn't support GPT. Use GNU Parted.
>
>
> Disk /dev/sdb: 160.0 GB, 160041885696 bytes
> 255 heads, 63 sectors/track, 19457 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
> Disk identifier: 0x15261526
>
>     Device Boot      Start         End      Blocks   Id  System
> /dev/sdb1               1       19458   156290903+  ee  GPT
>
>
>
> **parted
> steve at steve-laptop:/mnt$ sudo parted /dev/sdb2
> GNU Parted 1.8.8.1.159-1e0e
> Using /dev/sdb2
> Welcome to GNU Parted! Type 'help' to view a list of commands.
> (parted) check sdb2
> Backtrace has 13 calls on stack:
>    13: /lib/libparted-1.8.so.12(ped_assert+0x8a) [0x7f2a07a65f4a]
>    12: /lib/libparted-1.8.so.12(ped_geometry_read+0xc5) [0x7f2a07a6e055]
>    11: /lib/libparted-1.8.so.12(hfsplus_probe+0x26e) [0x7f2a07a8706e]
>    10: /lib/libparted-1.8.so.12(ped_file_system_probe_specific+0xcf)
> [0x7f2a07a6770f]
>    9: /lib/libparted-1.8.so.12(ped_file_system_probe+0xcb) [0x7f2a07a67c7b]
>    8: /lib/libparted-1.8.so.12 [0x7f2a07a9a47a]
>    7: /lib/libparted-1.8.so.12(ped_disk_probe+0x9b) [0x7f2a07a6d6eb]
>    6: /lib/libparted-1.8.so.12(ped_disk_new+0x74) [0x7f2a07a6d794]
>    5: parted [0x4091d7]
>    4: parted(interactive_mode+0xf3) [0x40d7b3]
>    3: parted(main+0x8f) [0x40a90f]
>    2: /lib/libc.so.6(__libc_start_main+0xfd) [0x7f2a07284abd]
>    1: parted [0x405399]
> Error: /dev/sdb2: unrecognised disk label
>
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