Trying to access external hard drive set up in mac

[kah5683]

Haven't done this before, so maybe it isn't possible?  Trying to transfer some data from son's external hard drive he set up on his desktop mac.  When I plug in and try to open in dolphin, won't mount, says: 

Could not mount the following device - Iomega HDD
Orgfreedesktop.Hal.Device.Volume.UnknownFailur
mount:  wrong fs type, bad option, bad superblock, on /dev/sdg3,
missing codepage or helper program, or other error in some cases
useful info is found in syslog - try dmesg|tail or so

When I put in dmesg|tail in konsole as root, got:

[root@localhost ME]# dmesg|tail
sd 15:0:0:0: [sdg] 3907029168 512-byte logical blocks: (2.00 TB/1.81 TiB)
sd 15:0:0:0: [sdg] Write Protect is off
sd 15:0:0:0: [sdg] Mode Sense: 10 00 00 00
sd 15:0:0:0: [sdg] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
 sdg: [mac] sdg1 sdg2 sdg3 sdg4
sd 15:0:0:0: [sdg] Attached SCSI disk
mount: sending ioctl 5310 to a partition!
mount: sending ioctl 5310 to a partition!
hfs: invalid secondary volume header
hfs: unable to find HFS+ superblock

The external hard drive works fine for my son.

Any way to do this?

[Just17]

Do you have   hsfutils   installed?    hfsplusutils?

[kah5683]

Do you have   hsfutils   installed?    hfsplusutils?

I didn't have hfsplusutils installed.  Also installed hfsutils-xhfs and macutils and still won't work.

[pclinmike]

It uses a different file system, see if there is any info to help you in my old post.

http://www.pclinuxos.com/forum/index.php/topic,103218.msg881171.html#msg881171