![]() The were errors reported during the copy of few blocks. ddrescue -v /dev/disk0s5 MyVolImage.dmg MyVolRescue.log The syntax for ddrescue is quite simple and here are the steps I followed:Ĭopy the content of the volume into an image file: Then you can run ddrescue (once compiled, it would probably also run on 10.3). To compile, open the Terminal and cd to the ddrescue directory, and then run the following commands: I then tried to compile it on Tiger, and it worked the first time (great to see Linux tools compiling on OS X without causing a headache). I tried to compile ddrescue on Panther and it did not work. Then, looking aroung on the net, I found a Linux tool called GNU ddrescue made by Antonio Diaz Diaz (not to be confused with dd_rescue written by Kurt Garloff, which was mentionned in one of the comments of the original article). So I decided to look what other tools were available, I looked on macosxhints, and found this article about using dd to make a block copy of a volume (e.g. ![]() I tried using DiskWarrior, but it was really slow - the message was saying something like "speed inhibted by disk malfunction." It was so slow, I was not sure if it had crashed, or if it would take weeks to get through. Using Apple's Disk Utility repair function failed to fix the drive. When looking at the disk with Apple's Disk Utility, the disk is visible, the name of the volume is not displayed (/dev/disk0s5 was displyed instead), and the volume would not mount. It had three HFS Plus journaled partitions. Here, you need to use some 3rd party commercial applications like Stellar Volume Repair Software which might be helpful in repairing disk permissions and also solving your issue.I had a problem with my disks (an original Maxtor from a dual G5). Additionally, on a Retina display the text will be tiny – but still readable if you move closer to the screen!ģ.Final solution (use a commercial applications): You’ll need to temporarily disable it for further use. Note that you might not be able to enter Single User Mode if you have a firmware password set. When you’ve finished in Single User Mode, type the following to reboot: However, you might be able to make note of its output and do a quick Google search to check a solution of this problem. Of course, you may never see this because even this trick might not be able to fix your disk. Repeat another two or three times until you have a message similar to this returned: If you see the following message at the end of the repair: Just wait until the flashing text cursor appears and type the following command: This will boot you into Single User mode and things will suddenly go very Linux, with a text-based display. Now, release it when the boot progress bar indicator will appear. For backup, you can either use in-built Mac software like Time Machine or 3rd party tools like Stellar Drive Clone, Carbon Copy Cloner, etc.ĭo a last minute ditch repair, by booting your Mac OS X before the Apple logo will appear by holding down the Cmd+S button from your keyboard. ![]() So, if you are facing this issue, then try below mentioned few tricks: -īefore you do anything, makes sure you have proper Mac backup available on an external drive, which can come handy in case of data loss situation. Back up as many of your files as possible, reformat the disk, and restore your backed-up files.” Is one of the most common error which occur when you use Disk Utility in a bid to solve a problem and Disk Utility has shrugged its shoulders and given up. In Mac there are several errors which is difficult to cumbersome whenever they encounter and “Error: Disk Utility can’t repair this disk. I let it do it's thing for a few hours when it was done, the disk was automatically remounted and could be browsed in Finder. In my case, my external drive (which I use for Time Machine backups) was given the name "/dev/disk4s4", and indeed the filesystem check program (fsck_hfs) command was still running. To see whether this is the case, you can run the "process status" command in a Console shell: Macbook-Pro: ~ luthien$ sudo ps ax | grep hfsĦ05 ? R 4:08.59 /System/Library/Filesystems/hfs.fs/Contents/Resources/./fsck_hfs -y /dev/disk4s4 If the external drive's activity indicator is blinking, but you are otherwise unable to access the drive, then some background process is working on your disk. Your Mac will not be able to mount the disk until after the automatic checks are complete. If you receive this message from Disk Utility after replugging an external drive that wasn't successfully ejected (or unmounted), it could be that the OS is already busy performing the repair in the background.
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