Cant Repair Disk on iMac

When I verified my hardrive on my imac, it said Erro: The underlying task reported failure on exit. Volume needs repair. But my button for Repair Disk is dimmed and cannot be selected. What do I do?

Thanks b-behr
For those who might read this post in error, though...
It is a known Leopard problem that disk verification and repair is broken....
When you do a disk repair or verification, just click the repair and WAIT -- you will see nothing happen for 10 minutes, as if your computer has just stopped responding -- then suddenly it will do your entire verification and repair and post your report. Most users would have log ago already logged off.

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Mac OS X cant repair disk backup

what does this indicate? I am new to mac

Mac OS X cant repair disk. Backup & reformat as soon as you can ..was the full message. Which has appeared a few times with a red exclamation mark.
Yesterday I plugged in my WD Ext H/D that I use for back up to my mac
(I dont understend partitioning...my son did that initially..my WD had "Storage" & "Backup"..but after I plugged the WD into my mac "Backup" didnt show up on desktop...I restarted backup using "Storage" thinking that was OK b ut then "Enter Time Machine" did'nt work ...
later that evening "You need to restart your Computor. Hold down the powerbutton for several seconds or press the Restart Button" then "Report this error to Apple"
At that point I closed down my mac & started fresh today...
totally confused...how did I loose my backups prior to the restart & can i get them back ????? what have I done wrong ?

Missing HD space and cant repair disk on disk utility

Ok this has been bugging me for past week now. First off I am missing 40GB of my 80GB HD. I know that disk are suppose to have less then the total but this data is just missing. I have used what size and Disk Inventory X to look for files that are taking up data. I have gotten rid of everything that takes up alot of space. The total size of everything together does not even total 20GB.
The reason I believe is awhile back I tried to make a partition for windows Xp but later deleted it. I do not know the size I made said parition but It may fit as to why I am missing space.
Lastly I have tried to use repair disk in disk utilities but it wont let me without running verify disk which when i use says that it failed and that I need to repair and verify using the OSX installation disk which I cant find. I probably wont be able to find the disk so is there anything I can do to fix this?
I just spend alot of money to get an XP disk and upgrade the RAM on this mac and dont want it to have been a waste. Help me please

Repairing your HD via the OSX installation disk is your first priority. Do you know anyone else with a Mac running the same version of OSX? Close to an Apple retail location?
How did you attempt to load XP the first time - bootcamp? How did you delete the partition?

Cant repair Disk

What does "the Volume Header needs minor repair" means? I can verify disk but cant repair it.

You cannot repair the startup volume while you are using it. You will need to use the Install Disk to repair the startup volume. Restart your Mac, insert the DVD and immediately press and hold the C key. When you get to the Installer choose your language. Then you can use the Disk Utility in the Utilities menu to repair your startup volume.

My iMac goes to disc utilities on startup, repair disk doesn't cure it and I can't reinstall Mountain Lion because I don't remember my I'd and password at the time I bought the software. Currently working abroad and at a loss can anyone help please?

My iMac goes to disc utilities on startup, repair disk doesn't cure it and I can't reinstall Mountain Lion because I don't remember my ID and password at the time I bought the software the system isn't accepting my current details and Apple isn't recognising the answers to my security questions. They don't even seem to have my correc date of birth so I can't progress the reinstallation. I'm currently abroad and have my iMac with me but with no way of contacting Apple that I can find, I'm at a loss and very reluctant to pay £35 to try and get my ID and pasword sorted out given that their system recognises my current details. can anyone help please?
AG

when they gifted me the mountain Lion software several years ago.
Mountain Lion was introduced in July 2012. Did the people who gifted you possibly use their Apple ID for the purchase of your OS? If you used your own Apple ID, you should have simply used the one you use for all things app store. The problem with any purchase at the app store is: whatever Apple ID was used to purchase, it willl stay tied to that Apple ID forever. And, purchases from the app store are not transferable.
So, you can check with the person(s) who gifted you or spend $20 to buy it - or, if your hardware is compatible with the new OS Mavericks, you could download it and associate it with your Apple ID.
FWIW, according to the licensing agreement, the OS remains the property of Apple and you are only granted a license to run it.

I purchased Adobe Acrobat Pro XI for my iMac (Mavericks 10.9.4), downloaded it and have attempted to install it 10 or more times. I have done all the usual maintenance steps (repair permissions, repair disk, etc) and it still won't install. All goes well

I purchased Adobe Acrobat Pro XI for my iMac (Mavericks 10.9.4), downloaded it and have attempted to install it 10 or more times. I have done all the usual maintenance steps (repair permissions, repair disk, etc) and it still won't install. All goes well until the installer gets to "Running Package Scripts" then it stalls or hangs up and does not finish the installation. It runs and runs and runs. It never finishes. I wind up having to force quit the installer. Can anyone point me in the right direction?

Hi jtento ,
Kindly enable the Root Account for the MAC and then try the installation there (in the root account). Please find below the URL to enable the root account.
OS X Mavericks: Enable and disable the root user
Thanks,
Vikrantt Singh

Applications on my iMac OSX 10.6.8 keeps shutting down immediately when I try to open. Help! I tried repair disk in disk utilities and nothing works..

Applications on my iMac OS 7.1 keeps shutting down immediately when I try to open.
Help! I tried repair disk in disk utilities and nothing works..

Perhaps you could try this to resolve your issue: http://support.apple.com/kb/HT1564
Try booting up to Safe Boot and see if you still have this issue in "safe mode." This will help you determine if the issue is caused by 3rd part sofware, or some other type of OS corruption.

Mac OS X Boot failure... I cant Repair HDD with OS Disk,Shows Repair Failed. I cant backup my files from HDD. Backup failed. But I need my all datas from HDD. I dont want to format. Cant enter safemode also. anything else..

Mac OS X Boot failure... I cant Repair HDD with OS Disk,Shows Repair Failed. I cant backup my files from HDD. Backup failed. But I need my all datas from HDD. I dont want to format. Cant enter safemode also. anything else..
I installed XP @Bootcamp, I cant access my Mac HDD via XP..
What I do??? Please help me.. please...

You can try DiskWarrior (about $100).
If that doesn't work, and if you have no backups at all, you might need to send your hard drive to Drive Savers or a similar service. It will cost a lot of money to get the data back, I'm sorry to say.

Older iMac slows then repairing disk permissions fixes - culprit?

Mom's older iMac 350 running Panther is fine and then every so often it slows down significantly (even closing windows is very slow).
Running Disk Utilities repair disk permissions always seems to solve the problem.
Just curious if anyone knows what's going on here. This doesn't occur frequently, I think we've only done this twice in the past 8 months. Just curious what the culprit is here & has anyone else experienced this.

Hi mjp29,
even the best quality machines need some regular maintenance (MacOS X 10.3/10.4: System maintenance). Just think of your car and what would happen if you never changed/added some oil...
If this answered your question please consider granting some stars: Why reward points?

Leopard 10.5.1 cant repair permissions or verify disk etc etc etc

ive had 10.5.1 for months
i cant get disk utility to carry on its job
the blue progress line does not move
many updates wont finish like Adobe bridge 3
it takes a second for any folder to open instead of immediate like in TIGER
i have tiger for the desktop. can i install it on the MBpro from scratch
it works flawlessly. Leopard is crap right now.. at this stage i mean
can i erase the disk and put in TIGER 10.4.11
im sick of this and i cant travel with leopard if it acts up

Yes, you can erase your disk (hopefully you have an external drive with a 10.4.11 clone, or a way to back up your files before you erase) and reinstall 10.4, and update to 10.4.11.
I haven't experienced all of the issues you mention, but in disk utility, be patient; the progress bar does hang for awhile, but eventually, (5-10 minutes, depending on the size and condition of your drive) it will progess, and finish permissions repair.
Some of the other things you mentioned may be the result of an upgrade install of Leopard, rather than erasing and installing fresh; if you do a clean erase and install know, I would bet that your problems would disappear.

Cant repair a Disk Image Volume in Tiger

Verify and Repair disk StreetAtlas_USA4.0.img
Checking HFS volume.
Checking Extents Overflow file.
Checking Catalog file.
Invalid extent entry
Incorrect block count for file
Checking Catalog hierarchy.
Checking volume bitmap.
Volume Bit Map needs minor repair
Checking volume information.
The volume StreetAtlas_USA4.0 needs to be repaired.
Error: The underlying task reported failure on exit
1 HFS volume checked
1 volume could not be repaired because of an error
1 HFS volume checked
1 volume could not be repaired because of an error

This can make NDIFs...
http://www.kelleycomputing.net/freedmg/
http://www.kelleycomputing.net/freedmg/help/using.html
Or maybe if you have Disk Copy around...
http://www.macosxhints.com/article.php?story=20040601000808938&mode=print

Superdrive replacement not working? Try "repair disk permissions"

Like many other folks, the superdrive in my iMac 7,1 died. I ordered a replacement from Powerbookmedic and installed it following ifixit's guides. Upon booting the iMac I found that the SuperDrive would accept a disc and the iMac saw the SuperDrive but OS X wouldn't recognize any disc I put in the drive and after trying to read it would eject it. After trying various things, I found that other users on my iMac were able to use the new drive just fine, it just wasn't working for me.
I tried various fixes but in the end "repair disk permissions" under disk utility did the trick. Posting here in the hopes of helping others. Joel

I cant access any of the files on the hard drive to back up. Do you know of a link on how to format and reinstall. It would be my first time. I have diskwarrior and it will not load at all.
Under the Erease tab I have
MAC OS Extended
MAC OS Extended (Journaled)
MAC OS Extended Case Sensitive
MAC OS Extended Case Sensitive journaled
MS-DOS Fat

Hard drive problems - cant repair HDD

Hi!
Ealier today I left my MacBook Pro to download som things while I was going uot for a while. And when I came back and woke up the display it wouldent wake properly. just running the screensaver with the "I'm thinking"-rainbowdisk for a mouse icon for like 5-10min. So I did a hard reset, and started i up again. only to get a grey screen and a flashing folder with a questionmark. So I started searching the Apple support pages, tried reseting the vram (or whats it called (the cmd+opt+r+p reset command)), tried the shift+cmd+v reset command (nothing happened) and lastly tried booting from the installdisk. That worked, but when I first tried to run the "startup disk" the hard drive dosent show. so I ran the disk utility, and found it only showing the DVD-drive. then I ran the systemprofiler to look for the HDD, and found it in the S-ATA folder. so I tried to run the disk utility againg, but still just the DVD-drive showing. then, suddenly, after some random clicking at the different menu buttons, the hard drive is showing. and so I mark it and press verify. it verifies but I still cant press any of the "verify disk premissions", "repair disk permissions", "verify disk" or "repair disk" buttons in the "first aid" window. but I thought maybe the "startup disk" utility now also could see the HDD as disk utility did, but no..
I'm getting kind of frustrated now, and would appriciate any help I can get!

This is a "canned" set of directions I wrote, so I realize you've coverd some of it:
Boot from install disc (insert disc > restart > immediately hold down the c key and keep holding it until you see “Preparing Installation”) > at first screen select the language and click Continue > click on the Utilities Menu in the menu bar > select Disk Utility > select your HD in the panel on the left side (the name of the HD’s manufacturer and the model number, usually the top item in the list) > look at the bottom of the main window next to S.M.A.R.T. status and see if it says “Verified” (good) or something more ominous like “Failing.”
If S.M.A.R.T. status is "Verified," run Repair Disk > click Repair Disk at bottom of main window. Run this at least twice, and keep running it until it says “appears ok” twice in a row. If that doesn’t happen, you may need a stronger utility (such as DriveGenius, TechToolPro, DiskWarrior) or if the directory is damaged beyond repair, you may need to reinstall the OS, or you may have a damaged HD which will need to be replaced (repair utilities can only repair the directory structure, not the HD itself). When this is finished, quit Disk Utility, quit the installer, and restart. Once booted normally, go to Applications > Utilities > Disk Utility and run Repair Permissions.
Do you have a backup? Do you have any data that needs to be saved?

Stuck in Lion installation *LIMBO* - disk damaged, disk wont repair, disk is locked, wont revert back to snow leopard

I'm stuck in Limbo. I cant complete the install and cant revert back to snow leopard. All I have are the installer utilites (including safari).
I'm running a summer 2009 release macbook pro 17 inch. I downloaded the Lion install app and proceeded to follow the instructions and guided. After less than a minute the install stopped to say that it could not be completed because the hard disk is damaged and can’t be repaired.
So...I went to disc utility to verify the disk and this is what I got.
Verifying volume “Macintosh HD”
Checking file systemPerforming live verification.
Checking Journaled HFS Plus volume.
Checking extents overflow file.
Checking catalog file.
Incorrect number of file hard links
Bad hard link creation date
(It should be 3325742596 instead of 3340504404)
Hard link record has data extents (id = 2888169)
Checking multi-linked files.
The volume Macintosh HD could not be verified completely.
Error: This disk needs to be repaired. Click Repair Disk.
So I put in my Snow Leopard disk and went to repair disk. Now, THIS is what I got.
Disk Utility can’t repair this disk. Back up as many of your files as possible, reformat the disk, and restore your backed-up files.
So then I wanted to go back to Snow Leopard at least, but I cant. When I go to “Startup Disk” and select my Mac 10.6.8 drive, it says:
You can’t change the startup disk from the selected disk.
Startup Disk could not gather enough information on Selected Disk.
So that’s annoying because it keeps me stuck in that installation "limbo" - not able to finish installing and not able to go back.
I restarted, holding down the OPTION key, but it only gave me one boot selection - the installer itself.
So then I try yet again to install this thing because there’s not much else I can do...but now it won’t even start installing...when the installer screen asks which drive I want to install it on, for which I would of course choose my Macintosh HD, it says in subscript underneath Macintosh HD:
“This disk is locked” and it wont let me select the “continue” button to begin the installation.
Please help, someone.

phew, just got everything back to "normal"
I turned off my mac for about 10 minutes and then started it up again. Also I think this time i inserted my snow leopard disc at just the right time, not too early not too late.
Whatever it was, when i went to "Startup Disk" the snow leopard disc showed up!
So then I went to disk utility after booting the snow leopard installer for the first time. It said it repaired one thing but then stopped and said it couldnt repair it and told me to back up and reformat.
Then I just ran a simple verify again and it said the HD was "OK" - it gave me a clean bill of health?!?!
So then I went to startup disk again, and was finally able to get out of limbo and back to good old snow leopard.
Now I'll install Lion, but taking all cautions beforehand...maybe i'll wait a few days first though.
Thanks to everyone.

Disk Utility hangs ("not responding") when attempting to Repair Disk on Time Capsule sparsebundle. Help.

I am trying to improve the performance of my Time Machine backup and retrievals via my 2nd Gen. Time Capsule from my iMac Core 2 Duo hard drive with SL 10.6.8. The incremental backups generally take 20 - 40 minutes each hour generally with fewer than 100 MB of data being backed up. I have read through numerous threads on these forums about Time Capsule and Time Machine issues as well as the very helpful Pondini site (http://web.me.com/pondini/Time_Machine/Home.html) and have tried many other suggestions (listed below), but have been unable to attempt a Disk Utility repair disk on the Time Capsule sparsebundle file.
After locating the sparsebundle 'file' in the finder under Shared/TC/Data, I am only sometimes able to drag the sparsebundle into the Disk Utility volumes and disk window. About fifty percent of the time, Disk Utility hangs when attempting to drag in the sparsebundle. If I am able to get it listed and click on "repair disk", then the beach ball begins to spin and nothing happens. This occurs whether or not I first use AirPort Utility to "Disconnect All Users" from the Time Capsule. I have given it over one hour to attempt the repair disk, but nothing happens, i.e., not a single message shows up in the detail window. The beach ball just spins, and Disk Utility shows up in red as "not responding" under the Force Quit menu.
Also note that on my new Macbook Air, Time Machine runs quite quickly via this same Time Capsule from my new Macbook Air using OS X Lion (which seems to indicate that the Time Capsule drive itself is OK).
I would appreciate any tips on getting Disk Utility to run "repair disk" on my sparsebundle, as I seem to have exhausted most other options (see below) for improving Time Capsule performance -- aside of course, from wiping the Time Capsule clean and starting all over.... (which I really don't want to do, and from what I've read, has not helped some people who've tried this anyway).
Many thanks!
Although I would like to focus this thread on the Disk Utility / sparsebundle "Repair Disk" problem, I should mention that I have tried the following other things:
1. Repaired disk permissions on my hard drive
2. Used Disk Utility to run "repair disk" on my hard drive after starting up from a SuperDuper external backup
3. Run DiskWarrior on my hard drive, again, from a separate startup disk
4. Did the "full reset of Time Machine", a la Pondini Troubleshooting #A4
5. Changed my computer and Time Capsule names to simple short names with only alphanumeric characters and no spaces
6. Ensured that my Time Capsule is being accessed only via ethernet
7. Relaunched the finder
8. And finally, attempting to use Disk Utility to repair the sparsebundle - thus the nature of this post

OK, no takers out there, but I answered my own question (sort of).
The answer is that even though Disk Utility shows up as "not responding" under the Force Quit menu and appears to hang, it is actually still working. A bit of patience shows that after about an hour, my Disk Utility was able to show the 1.44 TB Time Machine sparsebundle from Time Capsule in the disk window on the left hand side. Once this appeared, I was able to click on "Repair Disk" (note that prior to doing this, I had to "Disconnect All Users" from my Time Capsule using the Airport Utility program; otherwise you will get a "could not unmount disk" error). Again, the Repair Disk function appeared to hang Disk Utility as it showed up as "not responding" under the Force Quit menu. However, after about 8 hours, Disk Utility did run the entire Repair Disk protocol on the sparsebundle. The results DO NOT show up in the Disk Utility details window - so even if you are patient enough to let it complete, you will not see anything and may think that nothing happened. However, you can find the familiar results of the Repair Disk function by looking on Console - find the "DiskUtility.log" under Files: ˜/Library/Logs.
Unfortunately, I was hoping to find a problem that would have been subsequently repaired which would result in dramatically increased Time Capsule speed, but this was not the case. Disk Utility showed everything to be "OK" and I am stuck with a very slow Time Capsule....
(And of note, my new Macbook Air (OS Lion) Time Machine functions blazingly fast on both backup and retrieval to and from the very same Time Capsule - even though, these are occuring wirelessly via AirPort -- granted the size of this sparsebundle is an order of magnitude smaller at this point, i.e., only 10 GB right now)
Would still be happy to hear of any similar experiences or tips on getting Time Capsule to work more quickly.

Cant Repair Disk on iMac

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