Disk Utility reports a block count error for a deleted file?

I carry out a regular scan of the hard drive and on occasions disk utility reports that a file has a bad block count. It is usually a large file like a CR2 or TIFF and is also one which has been deleted? Not only put in the trash but emptied the trash as well.
The only other thing of note, which I havn't checked if it is relevent to my problem, is on occasion when I go to empty the trash it reports it can't be fully emptied as one of the files is still in use, even though it isn't? If I use secure empty trash it dletes the file.
In case its relevent:
I use Canon's DPP & ACR for CR2 files and PS CS6/CC for TIFF's. I also delete TIFFS from within Bridge CS6/CC.
Both Disk Utility and Drive Genius report the SMART status as being OK.

Hi Hollie, and welcome to the forums!
Have you created images before successfully?
Is this to/on your boot drive, or an external drive?
Have you done any Disk/OS maintenance lately?
We might see if there are some big temp files left or such...
How much free space is on the HD, where has all the space gone?
OmniDiskSweeper is now free, and likely the best/easiest...
http://www.omnigroup.com/applications/omnidisksweeper/
WhatSize...
http://www.macupdate.com/info.php/id/13006/
Disk Inventory X...
http://www.derlien.com/
GrandPerspective...
http://grandperspectiv.sourceforge.net/

Similar Messages

Invalid Volume Free Block Count Error In Disk Utility

My Ti-Book has been acting very strange lately so I decided to run the Verify Disk Option in the Disk Utility program. When I ran it, I got a series of messages in red that were:
Volume Bit Map Needs Minor Repair
Invalid volume free block count
Error: The Underlying Task reported failure on exit
When the verify disk function completed, I was asked to enter my administrator password. When I entered it and clicked on Okay, the Disk Utility program froze up and I had to restart.
What do the two error messages mean? How do I repair my disk?

Hi, WTM. The Verify Disk routine in Disk Utility is almost never worth running. It does the same error-detection tasks as the Repair Disk routine, but then it doesn't repair any errors that it finds.
Start up from your Tiger installer DVD, open Disk Utility, select your hard drive, and run the Repair Disk routine. If you get the same "task reported failure on exit" message, you'll need a stronger directory-repair utility like DiskWarrior, or you'll need to erase your hard drive completely and reinstall everything on it.

Disk utility reports "Device could not be opened" - error when trying to format a new drive in a Mac Pro 1,1

MacPro 1,1 Quadcore 3 GHz (2006 "Woodcrest")
32 GB RAM
ATI Radeon HD 5770
OS X 10.7.5 Lion
I have encountered the following behavior when trying to format a new drive with disk utility. This description has also been send via the Mac Pro feedback as a bug report to Apple.
On searching the web and forums with this particular error message and behaviour I could not find any usful results. So maybe the following description may be helpful for some users.
Best regards.
1. Drive Bay 1 contains the original 250 GB Startupdisk. It works without errors.
2. Drive Bays 3 and 4 contain each a WD Caviar Black 2 TB SATA 3 HDD. They work without errors.
3. I have purchased a third WD Caviar Black 2 TB HDD.
4. In Drive Bay 2 there has been a Seagate 750 GB HDD, which worked in conjunction with all the other drives without error.
5. I exchanged the Seagate HDD in Drive Bay 2 with the new WD Caviar Black 2 TB HDD.
6. On starting the system, it will report to initialize the new drive.
7. On trying to initialize the new drive with disk utility it reports the error [translated from German] "Erasing of the volume has failed. The device could not be opened."
8. I thought that the drive is faulty. Thus I created an RMA-Case at WD. They exchanged the drive without problems.
9. On getting the exchanged WD Caviar Black 2 TB drive I put it in Drive Bay 2 as before.
10. On trying to erase and format the exchange drive I got the same error message "Drive could not be opened."
10.1 On selecting the physical drive in the devices list, disk utility reports all information in the bottom area of its window as usual, e. g. hard disk description, connection bus, type and place, capacity, write status, SMART-status, partition scheme.
10.1 On leaving that drive selected in the devices list and clicking the info-button, disk utility will also report additional information as usual, e. g. Name, Type, partition scheme, media-identification, media name, media type, device tree, … , number of relocated sectors, etc.. All this information appears to be valid, as can be compared to the other devices information inside the other Drive Bays. Also the disk numbering scheme appears to be standard - 4 HDDs give the numbering disk0, disk1, disk2, disk3.
10.2 From that information I conclude that the SATA-bus and connectors electrically work properly, the drive has spun up and can be accessed by the system normally.
11. I powered down the computer, took out the HDDs from Drive Bays 3 and 4 and put the caddy with the new exchange drive in Drive Bay 4 [Maybe, I could have also just left it alone in Drive Bay 2, or 3].
12. After powering on the system, disk utility will quick format the exchange drive without any error message. Also, when erasing again by selecting the option to write zeros to the drive, disk utility will finish without error.
13. After disk utility finished formatting, I put back the original drives into Drive Bay 3 and 4 and put the now newly formatted drive back into Drive Bay 2.
14. After switching on the computer the system start and login proceeds without any error message. All drives appear as expected on the desktop.

If anyone is reading this still looking for what caused the issue and how to fix it here is what I discovered.
The antivirus program our company uses, Bitdefender Antivirus Plus, was causing some of the PDF files not to open. After troubleshooting the different modules and settings the culprit was..
Scan SSL in Privacy Control Settings. Turning it OFF solved the problem and all the PDF files that previously would not open now open just fine. This issue has been sent to Bitdefender for them to review. If you use a different antivirus program and are having this issue try locating the Scan SSL setting and see if turning it off solves the problem.

Disk utility reporting "Microsoft Reserved"

Hello,
I have been having a problem with Disk Utility reporting a NTFS volume as a Microsoft Reserved one. I run Windows XP on the NTFS partition, and use macdrive to access my HFS+ vol, but I cant use NTFS-3G to access the other way round, as it wont mount. Does anyone know of a method to possibly rescan the hard drive? rEFIt recognizes it.
Thanks in advance.
iMac 24" Mac OS X (10.4.9)

Do you have a backup of at least your personal data on the drive? If you do, you should try reformatting (erasing) the drive using Disk Utility, before giving up on it.
Restart from your Mac OS X installation disc, for the system you have installed currently; to do so, insert disc and restart with the C key held down. When you get to the first Installer screen (after language selection), go up to the menu bar. Under Utilities, select to run Disk Utility. In the sidebar, select the internal drive. On the +First Aid+ tab, run +Repair Disk+ (not +Repair Disk Permissions+ ). Do you still get that previous error at some point in this process? Do you get some other error that Disk Utility is not able to repair?

Disk utility reports smaller hard drive size than actual

I have been using a 3tb external drive (Formatted mac osx journaled) without any problems on my mac mini. Suddenly, it no longer allows me to write to the drive and more often it does not even recognize the drive when it is in the caddy. The caddy supports USB3 and is fairly new. The hard drive is a 7200rpm seagate.
When looking at the drive in disk utility, it states that the drive is 2.2 TB while the size is 3TB.
Does anyone have similar problems? Any recommendations?
Currently on OS X version 10.8.5.
Thanks!
When I insert the drive in the caddy I get the error message that it is not readable. Disk utility reports it as 2.2tb. The drive is a 3TB Seagate.

Hi Eric,
Can't really hook it up directly to a mac mini as the mini is pretty sealed. I did connect it to a PC as I wanted to run SpinRite on it and SpinRite gave me an error message that the Drive Size reported was less than the actual physical drive size.
SpinRite recommended not to perform any actions on the drive due to this discrepancy.
Not sure where to go at this point.
I could try to re-format the 3TB with OS X Journal and see if I get the 3tb back...

Disk Utility reports 'Volume could not be repaired' Now what?

Disk Utility reports that my internal HD cannot be repaired (I tried booting to the installation CD as-well-as a Superduper image with the same result). Here is the complete dialogue:
Verify and Repair disk “iMac_HD”
Checking HFS Plus volume.
Checking Extents Overflow file.
Checking Catalog file.
Illegal name
Checking multi-linked files.
Checking Catalog hierarchy.
Checking Extended Attributes file.
Checking volume bitmap.
Checking volume information.
Repairing volume.
The volume iMac_HD could not be repaired.
Error: The underlying task reported failure on exit
1 HFS volume checked
1 volume could not be repaired because of an error
Repair attempted on 1 volume
1 volume could not be repaired
Unfortunately the backup image has the same problem, so no use restoring the internal HD from it. So what do I do now? I read on a forum that the 'illegal name' error is caused by Photoshop CS, but didn't see a solution. Help!
 20" Intel iMac (2.0GB RAM, 256MB VRAM, 500GB HD) Mac OS X (10.4.6)

I get this error occassionally too. In those cases I take my original install dvd, put it in, reboot and hold the c key.
It then starts an install (don't worry, it won't do anything). When the install screen appears, in the top menu you can select Disk Utility.
Repair the disk from there, it will probably manage now. I guess something is interfering with Disk Utility when all of OS X has loaded.
Once the disk is repaired, verify/repair permissions, exit the program and reboot (don't hold and press c this time around).
Hope this helps.
Lars.
20" iMac Core Duo Mac OS X (10.4.5)

Disk Utility reports DVD disc does not have enough space

I am trying to create backup DVDs of some valuable data using my Macbook
I have used Disk Utility to create a disk image of the original DVD. When trying to burn the image to the blank DVD (4.7GB DVD-R), Disk Utility reports: 'The disc inserted does not have enough free space'. This occurs for both a disk/disc image of 4.26GB and one of a mere 451MB.
Any ideas on how can I overcome this?
PS: when is a disk a disc and vice-versa? Apple don't seem to know; the spellings above are verbatim.

If you are trying to duplicate the DVD then I suggest trying this:
Duplicate a CD or DVD
1. Insert the DVD/CD;
2. Open Disk Utility, and select the DVD/CD from the left side list (select the DVD/CD icon on top);
3. from the DU File menu select New | Disk Image from Disk 1;
4. Choose to format the disk image as DVD/CD Master, name the disk image and click Save;
5. When the .cdr file is finished select it with mouse and press COMMAND-I to open the Get Info and check the box to lock the file;
6. Choose the .cdr file from the left side list, click Burn, and insert a new, blank DVD or CD.
Otherwise I would consider using backup software that can span a backup across multiple optical media such as Retrospect, Toast, etc. You can look for them at VersionTracker or MacUpdate.
It's hard to offer more because you really did not provide any detail on precisely what you are doing and how you are trying to do it. More information may enable us to provide better suggestions.

Disk Utility - "Unable to create 'Desktop' - error 49168" - What's this?

I try to create a compressed disk image of my Desktop using Disk Utility and get the following error:
Unable to create "Desktop" - error 49168
Does anyone know what that means?

Googling for the term
"error 49168"
including the quotation marks points to several web sites, including http://forums.macosxhints.com/archive/index.php/t-45310.html
which you may find helpful.

Disk Utility reports everything is fine but everything action is slow?

My 13in MacBook Pro has been running very slow lately. Disk Utility reports everything is fine yet the pinwheel shows up all the time and it takes forever to respond to a clicked app. What's going on?

First, back up all data immediately, as your boot drive might be failing.
Step 1
This diagnostic procedure will query the system log for messages that may indicate a hardware fault. It changes nothing, and therefore will not, in itself, solve your problem.
If you have more than one user account, these instructions must be carried out as an administrator. I've tested them only with the Safari web browser. If you use another browser, they may not work as described.
Triple-click anywhere in the line below on this page to select it:
syslog -k Sender kernel -k Message CReq 'Channel t|GPU D|I/O|nspace-h|n Cause: -' | tail | open -ef
Copy the selected text to the Clipboard (command-C).
Launch the Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
Paste into the Terminal window (command-V).
The command may take a noticeable amount of time to run. Wait for a new line ending in a dollar sign (“$”) to appear.
A TextEdit window will open with the output of the command. Normally the command will produce no output, and the window will be empty. If the TextEdit window (not the Terminal window) has anything in it, stop here and post it — the text, please, not a screenshot. The title of the TextEdit window doesn't matter, and you don't need to post that.
Step 2
There are a few other possible causes of generalized slow performance that you can rule out easily.
Reset the System Management Controller.
If you have many image or video files on the Desktop with preview icons, move them to another folder.
If applicable, uncheck all boxes in the iCloud preference pane.
Disconnect all non-essential wired peripherals and remove aftermarket expansion cards, if any.
Check your keychains in Keychain Access for excessively duplicated items.
Boot into Recovery mode, launch Disk Utility, and run Repair Disk.
If you're booting from an aftermarket SSD, see whether there's a firmware update for it.
If you have a MacBook Pro with dual graphics, disable automatic graphics switching in the Energy Saverpreference pane for better performance at the cost of shorter battery life.
Step 3
When you notice the problem, launch the Activity Monitor application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Activity Monitor in the icon grid.
Select the CPU tab of the Activity Monitor window.
Select All Processes from the menu in the toolbar, if not already selected.
Click the heading of the % CPU column in the process table to sort the entries by CPU usage. You may have to click it twice to get the highest value at the top. What is it, and what is the process? Also post the values for % User, % System, and % Idle at the bottom of the window.
Select the System Memory tab. What values are shown in the bottom part of the window for Page outs and Swap used?
Next, select the Disk Activity tab. Post the approximate values shown for Reads in/sec and Writes out/sec (not Reads in and Writes out.)
Step 4
If you have more than one user account, you must be logged in as an administrator to carry out this step.
Launch the Console application in the same way you launched Activity Monitor. Make sure the title of the Console window is All Messages. If it isn't, select All Messages from the SYSTEM LOG QUERIES menu on the left. If you don't see that menu, select
View ▹ Show Log List
from the menu bar.
Select the 50 or so most recent entries in the log. Copy them to the Clipboard (command-C). Paste into a reply to this message (command-V). You're looking for entries at the end of the log, not at the beginning.
When posting a log extract, be selective. Don't post more than is requested.
Please do not indiscriminately dump thousands of lines from the log into this discussion.
Important: Some personal information, such as your name, may appear in the log. Anonymize before posting. That should be easy to do if your extract is not too long.

HT203176 i have a slow macbook, i ran live disk utilities and said I need to repair disk from a cd. did that, I got volume repaired from the external disk. when I reboot from hdd, then run disk utility, I get the same error message i did b4 repair

i have a slow macbook, i ran live disk utilities (from hard drive), turned out I needed to repair disk from a installation disk. Did that, I got the volume (Hard drive) repaired from the installation disk disk. To this point, great!
When I reboot from hdd, then run disk utility, I get the same error message i did b4 repair. I went thru two rounds of this.....
Can anyone help? thanks

Sorry guys, I don't see how to reply to you so I use reply to "me" basically.
So the error I get is "volume header needs minor repair" and then you need to perform repair from the installation disk message.
I did repair not verify from the disk twice. Every time ending in the "the volume had ha been successfully repaired". Then I reboot from the internal disk. Run disk utilities from it, do verify and get the same error message I got before repair. I hope this can shed some light fr you guys. Sorry I didn't include details in the original
MEssage.

I want to install Snow Leopard Server on our MacPro (2.66) using Mac Mini Snow Leopard Server disks? I kept getting an error for backwards compatibility. Is this possible or do I need to purchase another copy of Snow Leopard Server?

I want to install Snow Leopard Server on our MacPro(2.66) using Mac Mini Snow Leopard Server disks? I kept getting an error for backwards compatibility. Is this possible or do I need topurchase another copy of Snow Leopard Server?

The OS disks that are shipped with a particular product
are set up so that tey will only install on that product.
It will install on any Mini of that exact vintage, but that
is all.
This is to prevent people from doing exactly what you
are trying to do. The license for OSX shipped with any
is only valid for that product. Also, Snow Leopard,
including Server, is only permitted to be run on one
computer at a time. Bottom line, unlike Lion, legally
you cannot install the same copy on multiple
computers unless some "family pack" or site license
is purchased.
Yes, you need to purchase another copy.
The copy of Snow Leopard license is here:
http://images.apple.com/legal/sla/docs/macosx_snowleopard.pdf

Hi, i had recently bought a toshiba 3.0, 1.5tb hdd and i had to change the settings through Disk Utility on my mac to be able to transfer files from my mac to my HDD. The problem i am having now is, it wont connect to my TV or PS3? Can someone please help

Hi, i had recently bought a toshiba 3.0, 1.5tb hdd and i had to change the settings through Disk Utility on my mac to be able to transfer files from my mac to my HDD. The problem i am having now is, it wont connect to my TV or PS3? Can someone please help

"....and i had to change the settings through Disk Utility on my mac to be able to transfer files from my mac to my HDD"
What do you mean by that? Did you format?

Disk Utility Reports Errors

I have just erased my HD and reinstalled all my programs. Things were running fine for about a week. When I went to run a very disk... this is the message I received.
Verifying volume “Macintosh HD”
Checking HFS Plus volume.
Checking Extents Overflow file.
Checking Catalog file.
Checking multi-linked files.
Checking Catalog hierarchy.
Checking Extended Attributes file.
Reserved fields in the catalog record have incorrect data
Checking volume bitmap.
Checking volume information.
me %@ needs to be repaired.",1)
Macintosh HD
Error: The underlying task reported failure on exit
1 HFS volume checked
Volume needs repair
I then used the Start Up DVD to run Disk Utility and it said 1 volume repaired, 1 volume can't be repaired. But all I did was run in on my HD... my 2 other External drives checked out OK...
So... what exactly is the problem... is my HD faulty or is this a problem arising from installing other programs like Limewire and Windows Media Player. I JUST wiped my system clean a week ago and need to figure out what is going on... any ideas...
Thanks,
Daryn
Powerbook G4 Mac OS X (10.4.3)

You're welcome.
The Format is Extended and Journaled...but what exactly does this mean???
If the hard drive format is Extended with Journaling enabled (which is done at the factory and requires reformatting the hard drive to change it), performing an Erase & Install will not change the hard drive format unless you select a different format when doing so.
Mac OS Extended format is a hard disk format that increases the number of allocation blocks on the disk. Mac OS Extended format optimizes the storage capacity of large hard disks by decreasing the minimum size of a single file.
Check this link for information about file system journaling.
http://docs.info.apple.com/article.html?artnum=107249
This link provided instructions for checking a hard drive for bad blocks.
http://docs.info.apple.com/article.html?artnum=24764
You should also check the Smart Status for the drive.
http://docs.info.apple.com/article.html?path=DiskUtility/10.5/en/duh1896.html
No... It is only 80G... should it be partitioned? Again what
does this really do???
No the hard drive should not be partitioned unless you want or need it partitioned. Some prefer partitioning their hard drive for various reasons. As an example, you can partition the hard drive into two partitions and install 10.3 on one partition or volume and 10.4 on the other providing the option to boot the computer from either the 10.3 or 10.4 partition or volume. Some create and use a separate partition or volume to store all data keeping OS X and all applications on the boot volume partition.
Should I erase the Limewire program and any files I downloaded???
I thought Macs were impervious to viruses... so I thought it would
be alright...
There is no computer operating system that is completely impervious to viruses and malware but OS X is about as close as it gets - especially when compared to the insecurity associated with Windows. Although there are no viruses that currently affect or infect OS X, there are some Trojans and malware that do. I could email you an AppleScript programmed to erase all data in your Home folder/directory. You would be prompted for your admin password before doing so but if you trusted me and/or what I sent you and you opened and ran such a malicious script, bad things can happen.
Not long ago, there was a download available via the P2P network with Limewire that indicated or was shown as a free install of Microsoft Office for OS X. The size of this download was not very large - not anywhere near the size required to include Office X but some unsuspecting folks downloaded and ran this malware which completely erased their entire Home folder/directory. No antivirus software would be any help with such a malicious script since not a virus.
There must be some trust involved when downloading software or files which is the reason we should do so from known and trusted sources only. If you choose to continue using Limewire (which most use for downloading music for free which is stealing from musicians and record labels in effect), if you are ever prompted to provide your admin password for any reason out of the blue when opening a file downloaded with Limewire, you should always decline.
After I did the reinstall... everything looked good for about a week
(no errors when I ran Verify disk) did I not really do a complete erase
and install? Did I go wrong during the install process???
I don't believe you did anything wrong during the install process. If you performed an Erase & Install using your Panther install package and then you upgraded to Tiger using the Tiger retail install package, are you checking the hard drive via Disk Utility when booted from the Tiger retail install package?
If so and there is a hard drive directory problem that Disk First Aid repair cannot successfully repair, your options are using a more substantial disk repair utility such as Disk Warrior (which is highly regarded for OS X but comes with no guarantee) or checking the hard drive S.M.A.R.T. status first and if OK, checking the hard drive for bad blocks per the links I previously provided and then re-install Panther and all included software included with the install package that shipped with your Mac. Afterwards, check the hard drive for any directory problems again via Disk Utility when booted from the Tiger retail install package before installing Tiger.

Disk Utility Reports Error, Can't Repair

Well, I just ran a "verify disk" on my harddrive, this is the report.
"Verifying volume “Macintosh HD”
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.
Volume Bit Map needs minor repair
Checking volume information.
Invalid volume free block count
Invalid volume free block count
%@ instead of %@)",2)
2309912
2309813
Volume Header needs minor repair
The volume Macintosh HD needs to be repaired.
Error: The underlying task reported failure on exit
1 HFS volume checked
Volume needs repair"
But the repair button is gray and cannot be selected... please help!

You must boot the computer from your Tiger install disc in order to run Disk First Aid repair.
http://www.thexlab.com/faqs/durepairfns.html

Disk Utility Reporting Fatal Hardware Error

Hello all,
I woke up this morning to the flashing folder with a question mark in it on my MacBook. I know that that means the system can't find the OS so I assumed that my hard drive had magically failed overnight. So I turned my computer off and then rebooted and everything loaded properly. I went into Disk Utility and my main hard drive that has OS X on it is highlighted in red and when I click on it, Disk Utility only displays "This drive has reported a fatal hardware error to Disk Utility. If the drive has not failed completely, back up as much data as you can and then replace it with a working drive."
I have noticed EXTREMELY sluggish performance by my computer in these past two days which has required me to force quit programs and force shut down the system more times than I've had to in the whole time I've had this computer. Could this be a side effect of the failing drive?
I'm backing everything up right now, but I'm wondering how accurate Disk Utility is. The drive that I have in here is a non-Apple-installed 250 GB Western Digital that's been in here for nearly a year. Is it possible that the drive is failing beyond repair already? If so, is there any way to see the full extent of the damage and attempt to repair it before I go out and buy a new hard drive to replace it with?
Thanks for all the help and the fast responses!

Mateo wrote:
Hello all,
I woke up this morning to the flashing folder with a question mark in it on my MacBook. I know that that means the system can't find the OS so I assumed that my hard drive had magically failed overnight. So I turned my computer off and then rebooted and everything loaded properly. I went into Disk Utility and my main hard drive that has OS X on it is highlighted in red and when I click on it, Disk Utility only displays "This drive has reported a fatal hardware error to Disk Utility. If the drive has not failed completely, back up as much data as you can and then replace it with a working drive."
I have noticed EXTREMELY sluggish performance by my computer in these past two days which has required me to force quit programs and force shut down the system more times than I've had to in the whole time I've had this computer. Could this be a side effect of the failing drive?
yes, it could.
I'm backing everything up right now, but I'm wondering how accurate Disk Utility is. The drive that I have in here is a non-Apple-installed 250 GB Western Digital that's been in here for nearly a year. Is it possible that the drive is failing beyond repair already?
yes, it's quite possible.
If so, is there any way to see the full extent of the damage and attempt to repair it before I go out and buy a new hard drive to replace it with?
check the SMART status in disk utility as suggested. if it says anything but "verified" it means that the drive is expected to fail completely and you shouldn't try to repair it. If it says "verified" It's possible that reformatting will fix it so you can try that. this will wipe all the data on it so clone it off first as gbullman suggested. BTW, most drives come with manufacturers warranty longer than a year and you should be able to replace the drive. that's what I would recommend.
Thanks for all the help and the fast responses!

Disk Utility reports a block count error for a deleted file?

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