I have a WD My Passport 650GB (with Firewire and USB). I'm using it for almost a year now and it always worked fine. While underway I simply plug it in via Firewire - at home I connect it to my Airport Extreme to have it available as a network storage. Today I connected the HDD to my MacBook Pro (via firewire) and NOTHING. The HDD is starting (clearly making a sound and the power-indicator is flashing) but it won't appear in Finder. I also tried it with USB - no sign. I ran Disk Utility and tried to repair the disk. At first try I got a red error line saying that something is wrong with the 'headers'. However the repair completed with a success message saying that everything is OK. I also verified the HDD. Also with a success message. I did that a few times again and unplugged it in between. Never got the error with the headers again - it's always completing and saying everything is OK. As mentioned before, Macs can only read NTFS-formatted hard drives by default. If you want to write. You should use HFS+ if you're planning on using only Mac computers. WD 3TB My Passport Wireless Pro USB 3.0 External Hard Drive. I got a WD my passport ultra 1TB. I have much pictures on the disk its been used from a mac. Microsoft excel for mac. And sonis my question can i use the disk from my windows pc without deleting the storage on the. ![]() However I can't mount the drive. That is what Disk Utility is showing. However I might need help with mounting my harddrive with terminal. I found this post where it is explained step by step. However once I get to the last step and run sudo mount -t hfs -o rdonly /dev/disk2s3 /Volumes/My Passport terminal always outputs the message usage: mount [-dfruvw] [-o options] [-t external_type] special node mount [-adfruvw] [-t external_type] mount [-dfruvw] special| node So somehow I might call the wrong params or so when trying to mount the drive. Any ideas on that? – Jun 6 '12 at 8:11 •. ![]() The commands i use would be 'diskutil mount /dev/disk0s2' *please note you may has to list the volumes to find out if your hard drive is recognized as 'disk0s2' as it may change depending on what other volumes are mounted. Through 'diskutil' you can repair the disc etc. Much like disk utilities which you have used but at root level. Also i would do a filesystems disk check, eg. 'fsck_hfs -f /dev/disk0s2' again you'll need to verify the name of the volume, you may use this command 'df -hl' – Jun 6 '12 at 8:32 •. Disk Utility says the format is Mac OS Extended (Journaled). I do actually have it plugged into my TimeCapsule and I use it normally as Network Drive. However I got a new usb hub and unplugged the device from the TimeCapsule and connected the drive to the new hub instead of directly to the one and only usb slot on the time capsule. I tried it and everything seemed to work. However on the same evening I wanted to browse the external drive through my network and I couldn't access it - so I unplugged it and now I'm trying to fix it. Right now it's plugged into my mac directly. – Jun 6 '12 at 8:57. I just debugged a practically identical issue. After hours of trying various stuff, I finally found an answer, after closely examining system.log in Console. I found this: 3.1.13. 21.42.42,090 sudo[622].: TTY=ttys001; PWD=/Users/.; USER=root; COMMAND=/usr/sbin/diskutil mount readOnly /dev/disk2s2 3.1.13. 21.42.42,000 kernel[0]: jnl: disk2s2: is_clean: journal magic is bad (0xdead00ab!= 0x4a4e4c78) 3.1.13. 21.42.42,000 kernel[0]: hfs: late journal init: volume on disk2s2 is read-only and journal is dirty.
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