I have an external USB drive, formatted in Mac OS Extended (Journaled) which I use with my iBook G4 (OS X Tiger).
'macOS can't repair the disk. You can still open or copy files on the disk, but you can't save changes to fioles on the disk. Back up the disk and reformat it as soon as you can.' This drive seemed to be totally fine until I randomly got this message out of nowhere. NOTE: Internet Recovery requires that the Mac has OS X Lion or later. Internet Recovery is essentially the same as using the ol' Snow Leopard disc to boot. EDIT 2: That message means that someone has locked out the Mac as a security measure using Find My Mac within iCloud. Solution 5: Repair the WD My Passport in Disk utility Disk Utility is a built-in used to erase, format or manage internal disks and external storage devices. The most important feature of Disk Utility is First Aid, which helps detect and repair any issue with your disk. Press Enter and Disk Utility will launch. You can also find it in Utilities folder in Applications. Now, from the left column select 1 TB WD My Passport (or whatever your hard drive name is),.
For older Macs running prior versions of Mac OS X, typically anything running OS X 10.6 or earlier will have a SuperDrive, and thus shipped with a bootable DVD that can serve this same purpose. How to Fix Disk Utility Errors via Mac Recovery Partition.
Sometimes when I eject the drive the computer hangs and the pinwheel spins for a few minutes, and everything is fine. Other times it’s not. I’m not sure if firewire drives perform any better. I bought the USB drive because it was small and cheap.
Anyways, one day I plugged the drive in and OS X couldn’t mount it. I tried repairing it in Disk Utility and the repair failed with an “Invalid Volume Header“. DiskWarrior is supposed to be able to repair drives that Disk Utility can’t, but I didn’t feel like spending the $100. All of the photos on this drive were mirrored on another drive and also on DVD. The only thing I’d be losing are the star ratings I’d assigned to the photos (for the process of sorting through them).
So, considering that I wasn’t about to lose any data that I didn’t already have backed up, I tried to find a UNIX-type way to repair the disk. The Apple website had some notes about fsck (file system check), but nothing much that helped me. Then I found a website (that I can no longer find) that provided a solution running fsck.
First, start up disk utility and write down the location of the disk that won’t mount. OS X will give it a location such as /dev/disk1s3 . See Figure 1.
If you run disk utility you will get an error message such as shown in Figure 2.
The way to repair the disk is to use fsck with the -r and -f flags. -r rebuilds the filesystem catalog, and some times you’ll need to use the -f flag to force a check because it’s a journaled system. I haven’t had to use the -f flag (perhaps someone could comment on this?). If your drive is given the location /dev/disk1s3 you would type:
fsck_hfs -r /dev/disk1s3
Terminal will take a few minutes then spit out a bunch of code like this:josh:~ Josh$ fsck_hfs -r /dev/disk1s3
** /dev/rdisk1s3
Invalid Volume Header
** Checking HFS Plus volume.
** Checking Extents Overflow file.
** Checking Catalog file.
** Rebuilding Catalog B-tree.
** Rechecking volume.
** Checking HFS Plus volume.
** Checking Extents Overflow file.
** Checking Catalog file.
Missing thread record (id = 485454)
Incorrect number of thread records
(4, 226)
Incorrect number of thread records
(4, 226)
** Checking multi-linked files.
** Checking Catalog hierarchy.
Missing thread record (id = 485454)
Invalid directory item count
(It should be 38 instead of 57)
Missing thread record (id = 485441)
Invalid directory item count
(It should be 0 instead of 3)
Invalid volume file count
(It should be 402470 instead of 404177)
** Checking Extended Attributes file.
** Checking volume bitmap.
Volume Bit Map needs minor repair
** Checking volume information.
Invalid volume free block count
(It should be 9243234 instead of 13012437)
Volume Header needs minor repair
(2, 0)
** Repairing volume.
** Rechecking volume.
** Checking HFS Plus volume.
** Checking Extents Overflow file.
** Checking Catalog file.
Missing thread record (id = 471381)
Missing thread record (id = 473603)
Missing thread record (id = 476491)
Incorrect number of thread records
(4, 226)
** Checking multi-linked files.
** Checking Catalog hierarchy.
Invalid volume file count
(It should be 402470 instead of 404177)
** Checking Extended Attributes file.
** Checking volume bitmap.
** Checking volume information.
** Repairing volume.
Missing directory record (id = 476491)
Missing directory record (id = 473603)
Missing directory record (id = 471381)
** Look for missing items in lost+found directory.
** Rechecking volume.
** Checking HFS Plus volume.
** Checking Extents Overflow file.
** Checking Catalog file.
** Checking multi-linked files.
** Checking Catalog hierarchy.
** Checking Extended Attributes file.
** Checking volume bitmap.
** Checking volume information.
Invalid volume file count
(It should be 404177 instead of 402470)
** The volume HDD could not be repaired after 3 attempts.
If it still reports a failure, run it again.
Mac Os Can't Repair The Disk My Passport
josh:~ Josh$ fsck_hfs -r /dev/disk1s3
** /dev/rdisk1s3
** Checking HFS Plus volume.
** Checking Extents Overflow file.
** Checking Catalog file.
** Rebuilding Catalog B-tree.
** Rechecking volume.
** Checking HFS Plus volume.
** Checking Extents Overflow file.
** Checking Catalog file.
** Checking multi-linked files.
** Checking Catalog hierarchy.
** Checking Extended Attributes file.
** Checking volume bitmap.
** Checking volume information.
Invalid volume file count
(It should be 404177 instead of 402470)
** Repairing volume.
** Rechecking volume.
** Checking HFS Plus volume.
** Checking Extents Overflow file.
** Checking Catalog file.
** Checking multi-linked files.
** Checking Catalog hierarchy.
** Checking Extended Attributes file.
** Checking volume bitmap.
** Checking volume information.
** The volume HDD was repaired successfully.
josh:~ Josh$
Success! The volume is repaired.
Macos Can 27t Repair The Disk My Passport For Mac Os
Apple reports that some errors that get reported when a volume is journaled are benign. See http://support.apple.com/kb/TS2028?viewlocale=en_US. See also http://support.apple.com/kb/TA21053?viewlocale=en_US for Apple’s support page on repairing a journaled volume.
