Disk utility verify error.

I've been getting an error that does not let me repair disk problem using disk utility. The error reads- Error: The underlying task reported failure on exit - and then tells me that volume needs repair but i can not repair disk.
Techtool Deluxe says that the disk structure fails also.
I have searched the net and cannot find any answers.
Any help?
thanx

This might work
Boot holding down Apple/S and don't let go until you see scrolling text.
When that stops and you see a root#: prompt enter
*fsck -fy*
Let it run through all the checks and repairs.
If it fails first time, at any time, or finds and fixes a fault - _run the command again and keep doing so_ (some fixes can take several passes) until it says "Appears to be OK" then enter
reboot

Similar Messages

Disk utility verify comes back with a errors.

I am running Mac OS X 10.5.8.
When I run the disk utility verify it comes back with a message saying that it cannot repair the errors found on the drive. I also get msgs that the file counts and directory counts are not what they are supposed to be.
What do you recommend I do? Are these errors serious or should I ignore them. I only noticed these errors yesterday after my computer would not boot. I had to actually take out the power cord from the back of the computer and hold the power buttom down for 20 secs and then reattach the power cord. Only then did it boot again.
I am thinking about doing a complete reinstall from scratch however, there may be a chance that some other disk utility out there can fix my problems....any ideas?
Thanks in advance for your help.

Since your system is having trouble booting, you should probably fix those errors.
When Disk Utility can't repair a problem, you have some choices. Many people buy Disk Warrior or TechTool Pro, with Disk Warrior the preferred program, to fix those sort of errors, assuming they aren't caused by failing hardware. Those sound like 'soft' errors that Disk Warrior can repair (see their web site).
If you want to check your hard drive hardware, you can run the Apple hardware test (run the extended test), and SMART Utility is another program that will give you insights into the health of the hard drive.
If you have a good backup, another option is to boot to an OS X DVD (or a bootable backup), use Disk Utility to erase the hard drive and write zero's to it, then restore your backup. If you go this route, make sure you have a good backup because you'll be erasing, permanently, everything on your hard drive.

Disk Utility: Burn error: 0x80020022 The device failed to respond...

I've been working on archiving a ton of video to DVD. I'm using Dual-Layer discs to minimize the amount of physical storage space needed for the finished project. I burned several discs in iDVD in July and regularly received errors. Then the drive suddenly stopped loading any type of media. Anything I inserted would spin briefly and then eject. Repaired permissions and followed steps outlined here and here. Took the Mac back to the store where I bought it (sadly, not an Apple Store - nearest one is 12 hrs away) where naturally it performed flawlessly for the store rep.
So I took it home and resumed burning, now saving as a disc image (ignoring iDVD's warning about the performance of DVDs burned this way) and using Disk Utility, since iDVD didn't seem to be reliable. Burned about 25 discs, error-free, in this fashion, then three days ago, got the error: "Unable to burn “Disc 19.img”. (The device failed to respond properly, unable to recover or retry.)"
Retried the same image, and it worked. Then burned two more in the same fashion with no errors. Today I got the same error again. Logs are identical for each failed burn, except for the time span between certain lines.
Price of DL media being what it is, I'd hate to keep ruining discs if there's something I can do to avoid it. I suppose it could be bad media, but it seems odd that I'd get two bum discs that close together after burning so many without issue. Checked the site and the forums, and there doesn't seem to be any answers. Does anyone have any ideas? (Other than "try a different brand of media." I've got a buttload of these discs and it's too late to return them now.) Even if it just helps determine where the issue lies. Warranty will be up soon, so if it's hardware related, I need to get it taken care of quick.
Media: Philips DVD+R DL 8x
*Drive info:*
HL-DT-ST DVDRW GS21N:
Firmware Revision: SA15
Interconnect: ATAPI
Burn Support: Yes (Apple Shipping Drive)
Cache: 2048 KB
Reads DVD: Yes
CD-Write: -R, -RW
DVD-Write: -R, -R DL, -RW, +R, +R DL, +RW
Write Strategies: CD-TAO, CD-SAO, CD-Raw, DVD-DAO
Media: Insert media and refresh to show available burn speeds
DiscUtility.log:
2009-10-03 08:54:01 -0600: Burning Image “Disc 22.img”
2009-10-03 08:55:15 -0600: Image name: “Disc 22.img”
2009-10-03 08:55:15 -0600: Burn disc in: “HL-DT-ST DVDRW GS21N”
2009-10-03 08:55:15 -0600: Erase disc before burning: No
2009-10-03 08:55:15 -0600: Leave disc appendable: No
2009-10-03 08:55:15 -0600: Verify burned data after burning: Yes
2009-10-03 08:55:15 -0600: Eject disc after burning
2009-10-03 08:55:15 -0600:
2009-10-03 08:55:15 -0600: Preparing data for burn
2009-10-03 08:56:30 -0600: Opening session
2009-10-03 08:56:35 -0600: Opening track
2009-10-03 08:56:35 -0600: Writing track
2009-10-03 09:01:37 -0600: Finishing burn
2009-10-03 09:02:37 -0600: Closing session
2009-10-03 09:02:38 -0600: Finishing burn
2009-10-03 09:38:37 -0600: Burn failed
2009-10-03 09:38:37 -0600: The device failed to respond properly, unable to recover or retry.
2009-10-03 09:38:37 -0600: Additional information can be found in the ~/Library/Logs/DiscRecording.log log file.
2009-10-03 09:38:37 -0600: Unable to burn “Disc 22.img”. (The device failed to respond properly, unable to recover or retry.)
DiscRecording.log:
Disk Utility: Burn started, Sat Oct 3 08:55:15 2009
Disk Utility: Burning to DVD+R DL (CMC MAG D03) media with DAO strategy in HL-DT-ST DVDRW GS21N SA15 via ATAPI.
Disk Utility: Requested burn speed was 47x, actual burn speed is 4x.
Disk Utility: Burn failed, Sat Oct 3 09:37:15 2009
Disk Utility: Burn sense: 4/44/90 Hardware Error,
Disk Utility: Burn error: 0x80020022 The device failed to respond properly, unable to recover or retry.
Message was edited by: Weasel42

I have encountered the same problem. I have a Mac Book Pro from 2007, and it has gone through 3 DVD writers so far, all of which have ruined DVD+R DL disks. I have occasionally been able to burn one, but usually during verify, I get this error message:
Communication to the disk drive failed: 0x8002022
And disk utility fails with a "Invalid B-tree node size" error
Oddly, when I try to burn a disk near capacity (6.5Gb or more) it is more likely to fail than if I burn a smaller disk.
I've been using Memorex DVD+R DL disks, but I have used other brands in the past but they have failed, too. Out of about 50 disks so far, I have had success with about 5.

Disk Utility - Verify Disk Permissions / Repair

I run Disk Utility > Verify Disk Permissions with this rsult:
Verify permissions for “Macintosh HD”
Permissions differ on "usr/share/derby", should be drwxr-xr-x , they are lrwxr-xr-x .
The following repair was successful.
A few minutes later I run Verify Disk Permissions again with the SAME result:
Verify permissions for “Macintosh HD”
Permissions differ on "usr/share/derby", should be drwxr-xr-x , they are lrwxr-xr-x .
What does it mean and how can I stop this error?
Thanks!

There is nothing in that message that requires repairing. That is why it keeps showing up.
The permission database has to be updated every time the system is updated. If they miss a change that they have made in the system, it will get flagged as you see, but doesn't mean anything is wrong.
That KnowledgeBase article also must be updated to reflect the things they missed.
All that message is saying is that the directory derby is now replaced with a link to another directory (the l vs the d). However, mine doesn't have a link. Did you install anything that might have updated derby?
If you open Terminal and enter this code, can you post the line that has derby on it?ls -al /usr/share/
I'm repairing permissions now to see what pops up for me, but that will take a little while.
Edit: I looked into the Derby directory and Derby is a Relational Database Management System used by Apache. So, did you install something that modified Apache, PHP, mySQL or something like that? It might have altered the link.
Message was edited by: Barney-15E

Question on Disk Utility Verify

I have a two-week old 27" iMac, 1 TB SSD, 32 GB RAM, 1 4 GB RAID-0 external G-Drive (external Max OS drive), 2 4 GB external G-Drives (1 used as partitioned backup (1 TB for Boot Camp, 3 TB for Time Machine), 1 planned for Windows external drive). I also bought and installed the Paragon NTFS and CampTune applications.
Have setup Boot Camp on the internal 1 TB SSD (127 GB partition) and finally got things to work, but, I am continually having issues with WIndows crashing (either in the middle of use, or during startup or shutdown with the KERNEL_SECURITY_CHECK_FAILURE. I have been Googling, and this seems associated with the use of external drives?
The last time I got this, I was unable to boot back into Mac partition, and ended up having to hold down the Option Key at boot, and select the right partition to boot from, I then started verifying all my drives and paritions with Disk Utility, and was finding and repairing various issues (everything seemed to repair fine) and also the Mac HD partition seemed to have Permissions issues, which seemed to repair fine.
But, in the process of doing this, am noticing an issue, or at least a difference between the Mac HD and and the External Mac-formatted Verify logs. The External drive ALWAYS tells me the drive is good, while the Mac HD has done that only once, and usually seems just to stop with "Checking Volume Information" as the last entry. Not sure this is an issue, or not, but was looking for ANY cause for the continual Windows issue.
Disk Utility Log Dumps are below, first the internal Mac HD (two partitions, Mac and Boot Camp, checking only the Mac partition), second the External G-Drive, formatted Mac RAID HD. Both times, I am selecting the drive partition below the actual physical HW.
The Boot Camp partition checks good.
Thanks.
2014-06-15 01:54:28 -0600:
2014-06-15 02:16:43 -0600: Verifying volume “Macintosh HD”
2014-06-15 02:16:43 -0600: Starting verification tool:
2014-06-15 02:16:43 -0600: Checking file system
2014-06-15 02:16:44 -0600: Performing live verification.
2014-06-15 02:16:44 -0600: Checking Journaled HFS Plus volume.
2014-06-15 02:16:44 -0600: Checking extents overflow file.
2014-06-15 02:16:50 -0600: Checking multi-linked files.
2014-06-15 02:16:51 -0600: Checking catalog hierarchy.
2014-06-15 02:16:59 -0600: Checking extended attributes file.
2014-06-15 02:17:01 -0600: Checking volume information.
2014-06-15 02:17:01 -0600: Repair tool completed:
2014-06-15 02:17:01 -0600:
2014-06-15 02:18:21 -0600: Verifying volume “G-RAID with Thunderbolt”
2014-06-15 02:18:21 -0600: Starting verification tool:
2014-06-15 02:18:21 -0600: Checking file system
2014-06-15 02:18:21 -0600: Checking Journaled HFS Plus volume.
2014-06-15 02:18:21 -0600: Checking extents overflow file.
2014-06-15 02:18:21 -0600: Checking catalog file.
2014-06-15 02:18:23 -0600: Checking multi-linked files.
2014-06-15 02:18:23 -0600: Checking catalog hierarchy.
2014-06-15 02:18:23 -0600: Checking extended attributes file.
2014-06-15 02:18:25 -0600: Checking volume bitmap.
2014-06-15 02:18:25 -0600: Checking volume information.
2014-06-15 02:18:25 -0600: The volume External_1 appears to be OK.
2014-06-15 02:18:26 -0600: Repair tool completed:
2014-06-15 02:18:26 -0600:
2014-06-15 02:28:20 -0600: Verifying volume “BOOTCAMP”
2014-06-15 02:28:20 -0600: Starting verification tool:
2014-06-15 02:28:20 -0600: Checking file system
2014-06-15 02:28:20 -0600: Checking Volume /dev/disk1s4...
2014-06-15 02:28:20 -0600: Type of the filesystem is NTFS.
2014-06-15 02:28:20 -0600: Volume label is: BOOTCAMP.
2014-06-15 02:28:21 -0600: Verifying 9820 file(s) with EAs...
2014-06-15 02:28:28 -0600: $UpCase file is formatted for use in Windows 7/8/8.1.
2014-06-15 02:28:28 -0600:      51.90 GB in 87120 files.
2014-06-15 02:28:28 -0600:      65860 KB in 22860 directories.
2014-06-15 02:28:28 -0600:          0 KB in bad blocks in 0 fragments.
2014-06-15 02:28:28 -0600:     231124 KB in use by the system.
2014-06-15 02:28:28 -0600:         64 MB occupied by the log/journal file.
2014-06-15 02:28:28 -0600:          4 KB in each allocation unit.
2014-06-15 02:28:28 -0600:   31175679 total allocation units on volume (118.93 GB).
2014-06-15 02:28:28 -0600:   17488312 allocation units available on volume (66.71 GB).
2014-06-15 02:28:28 -0600: No repairs were necessary for volume /dev/disk1s4.
2014-06-15 02:28:28 -0600: Repair tool completed:
2014-06-15 02:28:28 -0600:

Do a backup. Boot to the Recovery Volume (command - R on a restart or hold down the option key during a restart and select Recovery Volume). Run Disk Utility Verify/Repair and Repair Permissions until you get no errors. See if the internal drive checks good.
OS X Recovery
OS X Recovery (2)

Internal Hard Drive Died - Now replaced - Disk Utility Internal Error

When using the original system disk to install OSX the new hard drive isn't recognised even though I have formatted it for an intel based mac (GUID Partition, Extended Journaled etc) using my imac . When launching Disk Utility from the system disk and trying to erase/partion the drive, I get the following error message "Disk Utility Internal Error - Disk Utility has lost its connection with the Disk Management Tool...". When connected to my imac using a converter it appears on my desktop. Any help would be greatly appreciated. The macbook in question is a 2006 (white). PLEASE HELP.....

Hi - Thanks for your reply. I have tried that but it still doesn't work. I have had a look around online for the past couple of hours and I found a post that said that newer hard drives can't be recognised by an original 10.4 osx system disk. I would need to find a copy of 10.5 to install OSX on a new hard drive. I dont know if that's true because I dont have a copy of 10.5. Any thoughts would be appreciated!

Disk Utility internal error message

I am receiving an error message every time I try to repair permissions on my MB running OS X 10.4:
error:
Disk Utility Internal Error
Disk Utility has lost its connection with the Disk Management Tool and cannot continue. Please quit and re launch Disk Utility.
Tried that several times to no avail. After quittting Disk Utility, system becomes very sluggish and Finder stops responding.
I then booted from the installation CD and ran a Hard Disk integrity check. It checked Ok. Then I tried a permission repair and got the exact same error message quoted above.
Any help?

There was a problem with this a couple of years ago involving iTunes Library Receipt files. See [Mac OS X 10.3: Repair Disk Permissions 'Disk Utility has lost its connection with the Disk Management Tool.|http://docs.info.apple.com/article.html?artnum=303132].
It seems unlikely that would surface now, but the suggested fix is worth trying. The article also mentions looking at Console log. Console is in Applications/Utilities.
Also, see this recent thread in the Panther forum:
http://discussions.apple.com/thread.jspa?threadID=1585878

When I run disk utility, verify permissions I get "WARNING SUID file system/Library/Coreservices/Remotemanagement/ARDAgent.app/Contents/MacOS/ARDAge nt has been modified

When I run disk utility, verify permissions I get "WARNING SUID file system/Library/Coreservices/Remotemanagement/ARDAgent.app/Contents/MacOS/ARDAge nt has been modified

Please read Disk Utility's Repair Disk Permissions messages that you can safely ignore.
Roger

Disk utility verify drive error

When I run disk utility I receive the following error. In reading previous posts I discoverd that I needed to use the OSX install disk. So I get it showing in the utilities window on the left side and attempt to get disk utility running by following this path on the disk -- Applications > Utilities > Disk Utility. Double clicking disk utility has no result.
Any suggestions would be appreciated.
The error when running verify disk from disk utility on the iMac:
Verifying volume “Macintosh HD”
Checking HFS Plus volume.
Checking Extents Overflow file.
Checking Catalog file.
Invalid node structure
The volume Macintosh HD needs to be repaired.
Error: The underlying task reported failure on exit
1 HFS volume checked
Volume needs repair

As Doug has said, & indeed you have tried....you need to run diskutility from the OS install disk. Or more accurately, you need to run diskutility when booted from the install disk.
The following ( from diskutility help) should explain it clearly.
Start up your computer using another disk.
To use the Install Mac OS X disc, insert the disc and restart your computer holding down the Option key, then select the Install Mac OS X disc and click the arrow.
Open Disk Utility.
If you're using the Mac OS X Install disk, follow the onscreen instructions until the menu bar appears with the Utilities menu in it., and then choose Utilities > Open Disk Utility.
Select the startup disk in the list of disks and volumes, then click First Aid.
Check the S.M.A.R.T. Status at the bottom of the window. If you can't see it, be sure you selected the hard disk your volume is on, and not the volume itself.
If the S.M.A.R.T. Status is "About to Fail," back up your files on the disk as soon as possible and replace the disk.
If the S.M.A.R.T. Status is "Verified" or "Not supported," click Repair Disk to repair the disk.
If Disk Utility tells you to look for links to corrupt files in the DamagedFiles directory, two or more files occupy the same space on your hard disk and at least one of them is likely to be corrupt. Examine each affected file in the DamagedFiles folder, which at the top-level of the affected disk. If you can replace it or recreate the file, delete it. If it contains necessary information, open it and examine its data to make sure it has not been corrupted.
If Disk Utility reports "The underlying task reported failure," Disk Utility encountered a problem it could not repair. Back up as much of your data as possible, reformat your disk, reinstall Mac OS X, and restore your backed up data.

Leopard and Norton Auto protect - Disk Utility Reports error on disk verify

Hi There,
Leopard 10.5.1, Norton Antivirus 10.1.1(2) with "auto protect on" has some incompatibility issue. Running "Verify Disk" from "Disk Utility" stops producing some error message in red colored text. Repair disk option is not available. However, verify disk on starting up with Leopard installation DVD shows no error. Verify Disk when starting up from Leopard 10.5.1 HD and norton auto protect disabled reports no error. So, looks like some compatibility issue.

I have been going crazy with this for the past fortnight: with theh rapiudity of the onset becoming far too frequent.
Norton AntiVirus AutoProtect could not continue. Please run LiveUpdate or reinstall AntiVirus and ReStart (Code:9)
This is what I get! I turn it back on, and zap. I reinstasll, and, zap.
I chatted with Symantic, they gave me a link for an update to the Stuffit engine, apparently may be a cause.
Well, that was No Use. Zap, you guessed it!
FYI:
I run iMacG5 17" 160HD, partitioned,Leopard on one partition, Tiger on the other. works well.
Oh, and, the Auto Protect doesn't zap in Tiger!
any ideas? I can share logs of Crash.
thanks, George.

Disk Utility returning error

Hello, I am trying to zero out all data on one volume of my OWC Firewire hard drive. I am receiving an "Underlying task error" both when I try to zero erase or Verify/Repair. Any thoughts on this?
Thank you,
Ian McLeod

Boot with your install disk, select your language, and, when the menu bar pops up, select Utilities->Disk Utility and try repairing it from there. If it works, then then try the zero out data option. If it works, then, check the internal HD. When finished, quit DU, Utilities->Startup Disk, select the internal and click restart.

Disk Utility Verify/Repair options

When I Verify my HD in Disk Utility I get this error.
Why does it say this? Should I Repair the disk? Will I lose data? Any help thanks!

You will need to repair the HD per the instructions, this is critcal. Prior to doing this backup your computer, that should be your #1 priority!! To repair the HD, restart the computer, when you hear the startup tone hold down the Option Key and select the Recovery Partition. Open Disk Utility, select your internal HD and run Repair Disk. If the disk has error run Repair Disk 2-3 times, if errors continue your have a damaged HD that needs to be replaced.

Disk Utility, Verify Disk & Repair Disk unavailable

Hi there!
I want to check my Hard Disk with Disk Utility, but none of the two buttons (Verify Disk & Repair Disk) are available, I started up from my Mac OS X installation disc, and once, it told me that the disk had errors and needed to backup my files, so I went back and backed up with Time Machine, then out of curiosity went again and I started up from my Mac OS X installation disc, and this time it told me that the disk was fine and there wasn't any errors, but when I open Disk Utility with my Mac, none of the buttons are available, is this normal?
What should I do?
Context: Before all this, I installed a program called Tuxera to create a NTFS partition but my Mac started to act weird, so I deactivate and uninstalled this program, that's when I went to verify the disk.
Any Help would be gratefully appreciated

I hope I'm wrong but it sounds very much like Tuxera did something to your startup disk. I would also be somewhat concerned about the integrity of any Time Machine Backups you made after you ran Tuxera.
The safest thing to do would be to start up from your Snow Leopard disk and see if you can *restore your system and data from your Time Machine backups to an +external HD+* formatted using Mac OS Extended (Journaled) and GUID Partitioning. Formatting will erase all the data on that disk. *If you try to restore to the internal and it doesn't work you will probably lose most of your data.*
Startup your Mac using the external and check very carefully to see that you have all your data and that everything works as it should. If it does you can safely reformat your internal drive from Disk Utility on the Leopard disk using Mac OS Extended (Journaled) and GUID Partitioning. After that you can clone the external drive to your Mac's internal drive or install from the Time Machine backups.
If the Time Machine backup doesn't work you will need to run a disk data recovery utility to see if you can salvage your data from your internal drive.
I don't use PC's so someone may be along with much better advice. However, unless and until someone more knowledgeable about PC file formats comes along to help *don't reformat your internal drive until you know your Time Machine backups are OK.*

Disk Utility says "Error: The underlying task reported failure on exit"

So I decide to play around with Bootcamp for the first time, and I go through the install but it kicks me out, telling me there was some kind of HDD error. It points me to Disk Utility, and I click on Verify Disk, and then I get the following error:
Verifying volume “MacBook”
Checking HFS Plus volume.
Checking Extents Overflow file.
Checking Catalog file.
Illegal name
Illegal name
Checking multi-linked files.
Checking multi-linked files.
g Catalog hierarchy.",0)
Checking Extended Attributes file.
Checking volume bitmap.
Checking volume information.
Volume Header needs minor repair
Volume Header needs minor repair
0 %)
The volume MacBook needs to be repaired.
Error: The underlying task reported failure on exit
1 HFS volume checked
Volume needs repair
So I do some searching, and Apple tells me that I need to reformat! ***?! There is nothing wrong with my HDD, or at least so I thought. No clicks, no shutdowns, nothing. Does this mean that soon my HDD might die? And if not, how the **** do I go about installing Bootcamp now?
Here's Apple's support document:
http://docs.info.apple.com/article.html?artnum=302411
Thanks much.
MacBook Mac OS X (10.4.8)

You don't need to reformat.
Put your first installation disk in and reboot, holding down the C key when you hear the chimes. When the installation program starts, start Disk Utility from the menu and select your system drive, then do a verify/repair from there.
The reason it can't repair it is because Disk Utility won't do a low level repair on the system drive in case important system files are moved. When you boot off the CD, your system drive isn't in use and can be repaired easily.

Disk Utility issue-Error: The underlying task reported failure on exit

When I run Disk Utility on the hard drive( repair permissions/verify disk), I see an "illegal name" message and the following error message and DU will not complete the "verify disk" function.
-Error: The underlying task reported failure on exit
What does this mean and how do I fix it?
Thanks, Pete
iMac 17 G5 Mac OS X (10.4.3) Igb ddr ram and winning attitude

Thanks, I have deleted the legal and legal. files but DU is erroring with this message now;
Volume Header needs minor repair
The volume Macintosh HD needs to be repaired.
Error: The underlying task reported failure on exit

Disk utility verify error.

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