I see the same issue, I guess. I copied the main data partition (250 gb)
from a friend's broken mac using "ddrescue /dev/sdc2 rescued.img
rescued.log" and tried to mount it with "mount -o loop,ro rescued.img
/mnt"
In Ubuntu 12.04 as well as 14.04 I get "invalid secondary volume header" and
"unable to find HFS+ superblock".
I also tried with "losetup" manually as suggested by some forum entry but
without success.
I also tried with offset and size, but it does not help because the file size
of the image is equal to the original partition size.
# parted /dev/sdc unit B print
Modell: Hitachi HTS545025B9SA02 (scsi)
Festplatte /dev/sdc: 250059350016B
Sektorgröße (logisch/physisch): 512B/512B
Partitionstabelle: gpt
Nummer Anfang Ende Größe Dateisystem Name
Flags
1 20480B 209735679B 209715200B fat32 EFI System
Partition boot
2 209735680B 249409327103B 249199591424B hfs+ Macintosh HD
3 249409327104B 250059329535B 650002432B hfs+ Recovery HD
# file rescued.img
Macintosh HFS Extended version 4 data (mounted) last mounted by: 'HFSJ',
created Thu Jun 21 12:24:20 2012, last modified: Sat May 16 20:50:35 2015, last
checked: Thu Jun 21 19:24:20 2012, block size: 4096, number of blocks:
60839744, free blocks: 14124774
... but in Ubuntu 10.04 the mount works just fine!
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https://bugs.launchpad.net/bugs/889928
Title:
hfsplus partition will not mount
Status in linux package in Ubuntu:
Invalid
Bug description:
I have a hard disk image of a Mac OS X system.
macbook1.img is the entire disk, including partition table.
hfs1.img is part of the entire disk from offset 209735680 onwards.
hfs2.img is part of the entire disk from offset 209735680 onwards and then
truncated according to the length of the partition.
I tried to mount it with:
mount -t hfsplus -o ro,loop,offset=209735680 macbook1.img /n1/macbook/fs
Give this in dmesg
[320231.611112] hfs: unable to find HFS+ superblock
[320293.525940] hfs: invalid secondary volume header
[320293.525944] hfs: unable to find HFS+ superblock
[320629.619113] hfs: invalid secondary volume header
After I use dd to extract just the hfsplus partition into a single file, it
still fails to mount.
Only when I truncate the image file to the exact length of the partition
according to the partition table, does the mount command actually mount the
image with:
mount -t hfsplus -o ro,loop hfs2.img /n1/macbook/fs
I conclude that there must be a bug in the Linux kernel hfsplus code,
that wrongly locates the secondary volume header unless the image size
is correct.
Output of file:
hfs1.img: Macintosh HFS Extended version 4 data last mounted by: 'HFSJ',
created: Wed May 11 07:33:43 2011, last modified: Wed Oct 5 16:49:16 2011,
last checked: Wed May 11 15:33:43 2011, block size: 4096, number of blocks:
14567302, free blocks: 4402186
hfs2.img: Macintosh HFS Extended version 4 data last mounted by: 'HFSJ',
created: Wed May 11 08:33:43 2011, last modified: Wed Oct 5 16:49:16 2011,
last checked: Wed May 11 15:33:43 2011, block size: 4096, number of blocks:
14567302, free blocks: 4402186
macbook1.img: x86 boot sector; partition 1: ID=0xee, starthead 254,
startsector 1, 117210232 sectors, extended partition table (last)\011, code
offset 0x0
output of parted:
Disk /n1/macbook/macbook1.img: 60011642880B
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Number Start End Size File system Name
Flags
1 20480B 209735679B 209715200B fat32 EFI system
partition boot
2 209735680B 59877404671B 59667668992B hfs+ Customer
ls -l
-rw-r--r-- 1 root root 59801907200 2011-11-13 15:12 hfs1.img
-rw-r--r-- 1 root root 59667668992 2011-11-13 16:46 hfs2.img
-rw-r--r-- 1 root root 60011642880 2011-10-29 14:14 macbook1.img
ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: udisks 1.0.4-1
Uname: Linux 3.1.0+ x86_64
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
CustomUdevRuleFiles: plcbus.rules
Date: Sun Nov 13 18:35:30 2011
MachineType: Dell Inc. Inspiron 1521
ProcEnviron:
LANGUAGE=en_GB:en
PATH=(custom, no user)
LANG=en_GB.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.1.0+
root=/dev/mapper/inspiron--hd-root ro
SourcePackage: udisks
Symptom: storage
Title: Internal hard disk partition cannot be mounted manually
UpgradeStatus: Upgraded to oneiric on 2011-10-14 (29 days ago)
dmi.bios.date: 02/03/2008
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A06
dmi.board.name: 0GU163
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvrA06:bd02/03/2008:svnDellInc.:pnInspiron1521:pvr:rvnDellInc.:rn0GU163:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Inspiron 1521
dmi.sys.vendor: Dell Inc.
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