Disk Repair Utility Full Disk Error

Today, my MBP froze, as in it no longer responded to keypresses or moving the mouse, so I held the power button until it powered off. Whenever I try to power it back on, it comes up with the apple logo on a gray screen, and a progress bar briefly appears beneath the apple logo, flashes a few times and dissappears, then the computer turns off.
By running the disk repair utility from the OSX install disk, the OSX partition of my hard drive needs to be repaired. When I try to repair it, it gives me an error saying that the disk is too full to do a repair on (I probably have ~10GB free, so this makes sense), and I need to wipe my disk and reinstall OSX .
I have windows installed via bootcamp and I can still boot into that and see my contents of the OSX partition (e.g. I can play my music, watch movies, open documents all of which are on the OSX partition, I just can't boot to it.).
Although probably unrelated, I've run the diagnostics, and everything came up okay. I've also tried holding shift during boot (trying to get OSX into safe mode) and holding command-option-P-R (clear the PRAM) during boot, neither of which helped.
My current strategy is copy a lot of data off my OSX partition from within my windows partition to an external HDD, in order to free up space on my OSX drive, so that hopefully disk repair can do its job. Does anyone know if this will work, or if not, can anyone recommend an alternate work around?

Backup your files, if possible. Your only recourse is to reformat the drive and reinstall OS X. Do not copy or backup files from Windows. If at all possible boot from another drive like your external HDD by installing OS X on the external drive (unless it is already a bootable drive.) You can then copy your data from the faulty OS X volume before erasing it.
You should never permit your free space to drop so low. One should maintain 10-12 GBs or 10-15% of the volume's total capacity, whichever is greater.
Since this problem will likely recur I suggest you consider just replacing the drive with one that is considerably larger. I would also be sure to arrange to maintain a bootable backup on an external drive in case problems such as this one occur.

Similar Messages

Disk utility finds new errors after every reboot

My problem: every time I reboot my computer, disk utility shows minor corruption of the catalog, attributes, and free space maps on my internal drive. If I boot into the Recovery partition and use Disk Utility to repair the drive, the repair succeeds, and runnin Verify Disk shows a clean file system. But once I boot into the OS from the HD, shut down, and restart, a new set of disk errors appears. The errors are never exactly the same (in mismatch of clusters, for example) but are always off by a few percent.
Things that may be related:
This is a new (1-wk-old) MBP 17" (late 2011 model), which I bought to replace an older 15" MBP running OSX 10.6. I used Migration Assistant to move my data and apps from a Time Machine backup of the old laptop to the new laptop. I then made a Time Machine backup of the new laptop, replaced the factory HD with a Seagate Momentus 720GB, 7200 rpm drive, and used Time Machine to do a complete restore of OS and data onto the new drive. I later used Bootcamp assistant to create an NTFS partition (which doesn't ever show errors).
Things I've already tried to fix the problem that haven't worked:
--Repaired disk permissions as well as the disk structure.
--Using the online recovery tool to do a complete reinstallation of Lion (preserving my data and apps, so not a clean install).
--Using TechToolPro DVD to do a deeper analysis and repair of the disk's volume structure. The repair succeeded, but the disk errors came right back.
--Uninstall every utility or extension that might possibly affect the hard drive.
--Disable all login items using the Accounts preferences pane.
--Disabled Spotlight by moving the entire volume into the Private area in Spotlight preferences.
--Reset the PRAM.
--Reset the SMC.
No joy from any of these. I haven't tried running fsck (is there any reason to?). I'd love to track down the program that is causing the disk corruption, but don't know how to do that.
I would be most grateful for any suggestions on diagnosing and permanently fixing this problem, as it does seem to make my system unstable and prone to crashing.

Thanks for responding. Yes, I should have mentioned that I used the TechToolPro boot DVD to do a thorough SMART scan on the drive as well as a full scan for bad sectors. No problems were found. I also did a long scan of the RAM to rule out memory errors.
I did remove the new drive and replaced it, taking extra care to ensure the connector was seated properly. But the disk corruption/repair/corruption cycle still reoccured.
I haven't put the factory drive back in to check whether the problem affects that (smaller, slower) drive as well. If it does, should I conclude that I have a H/W problem with, e.g. the drive controller chip or the drive cable in the laptop?
I wonder if this might be related to another problem I'm seeing with the laptop, which is that the lid closure doesn't work--the OS isn't able to detect when the lid is closed. It looks like the wire to the sensor goes through the same cable bundle as the SATA cable. Perhaps there is a defect in that bundle or connector.
I will try the factory disk. If the problem doesn't show up with that, then I guess I should focus again on the possibility of a defective HD. Is there some utility other than TechTool that would do an even more thorough check of the HD?

Disk Utility Input/Output Error

I am trying to make digital backups of some home movie DVDs I have created in the last few years with iMovie and iDVD. Every time I use the iMac to try and make a disk image with Disk Utility, it gets about halfway through the process and then I get an error message that says, "Unable to create "disk3.dmg" - Input/output error." I usually have better luck on my older Powerbook G4, though I sometimes get the same message there. Does anyone have any ideas why this is happening...and how I can fix it? Of note, I have tried different names for the disk image, but it doesn't seem to have any effect.

You're going to love this...
I had been getting the exact same error, even after I've done full image backups of my main volume just a few months before. Since I couldn't perform the image backup, I tried copying important files manually. When copying some 3000 files from my Documents folder, the *entire copy* failed...one file was corrupted and was unreadable. So instead of just asking if you want to skip and continue, the entire operation fails. I deleted the corrupted file, and booted from an alternate system, and voila! I successfully created an image of my main volume and saved it to an external HD in about 15 mins. No problems whatsoever. Unbelievable.
Make sure your DVDs are clean, ie, such that all the files can be read correctly.
What bugs me most, is that the bad file was not detected when I ran the Disk Repair utility on the main volume (from another booted drive of course).
What am I missing such that I can detect issues like this in the future?

URGENT!!!!- INTEL MAC "INVALID SIBLING DISK" error when run disk utility

I am very upset, I ran my verify disk permissions, everything fine, repair disk permissions, everything fine, do t periodically just to mae sure all my stuff is in order,,,, then I decided to run te VERIFY DISK, because do not do it as much and want to mae sure my macbook pro is running fine, and I get:
Verifying volume “minimal minimal”
Checking HFS Plus volume.
Checking Extents Overflow file.
Checking Catalog file.
Invalid sibling link
The volume minimal minimal needs to be repaired.
Error: The underlying task reported failure on exit
1 HFS volume checked
Volume needs repair
!!!!!!!!!!!!!!! ***?!!!!!!!!!!!!!!!!! there is no way of repairing the disk, and when I search for possible solutons it says I need to run it from the original osx installer disk, and even when it does not necessarily repir this error. besides the fact that the original cd is in atlanta and I am currently in barcelona, some say that I would need to reformat my drive and either way this might not solve the problem. I HAVE WAY TOO MUCH IMPORTANT INFORMATION on my macbook pro to reformat, and i do not have the money to buy an external hardrive, I A VERY UPSET, A BRAND NEW COMPUTER, LESS THAN TWO MONTHS OLD, AND ALREADY I HAVE THESE KIND OF PROBLEMS WITH IT, WHERE IS MY SUPPORT?! please tell me, what do i do? I expect a decent, viable slution to the problem. I need my computer ad the information in it, I work from it and also use it to produce music. why would I have this kind of problem, when I search for answers, everything relates to external hardrives, ..... this is my internal hard drive that I am talking about--- WHAT DO I DO?!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

The available Apple centers in Spain are:
ADEMAC
C Castelló, 109
28006 Madrid
Tel 91 562 11 00
BANANA COMPUTER
C Leon and Castillo, 88
The 35004 Palms of Great Canary
Tel: 928 24 28 28
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BANANA COMPUTER
General boulevard Franco, 141
38001. - Santa Cruz de Tenerife
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BENOTAC
C Doctor Castelo, 35
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Tel 91 308 43 63
BENOTAC
C Babel Nº1, the Premises
29006 Malaga
Tel: 952 04 09 55
Fax: 952 04 13 58
BILBOMICRO
Stolen c of Amezaga, nº 7 low
48008 Bilbao (Biscay)
Tel 94 423 02 13
BILBOMICRO
C Abendaño, 52
01008 Vitoria
Tel 945 28 41 33
BUS Solutions
C Cabrales, 100
33201 Gijón - Asturias
Tel: 985 35 90 85
CTA Serveis
C Consell de Cent, 382
08009 Barcelona
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GOLDENMAC
C Bolt, 48
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Perhaps, since you are under warranty, they may have a boot disk to attempt to run disk utility and see if the problem can be repaired before resorting to reformatting. Disk error may occur because of a number of issues (installed software, crashes, shutdowns, physical movement of the drive while disks spinning, etc.)
In addition you may want to boot in the single user mode to access the FSCK command as follows: The following is from the Apple support site
Mac OS X: How to Start up in Single-User or Verbose Mode
You may use a key combination when starting up the computer to enter single-user mode or verbose mode, either of which can be used for troubleshooting and in software development. This document applies to Mac OS X and Mac OS X Server versions 10.0 and later.
Steps to Enter Single-User or Verbose Mode
1. Shut down the computer if it is on.
2. Press the power button to start the computer.
3. Immediately press and hold the Command (Apple) key and one of the following:
the "s" key for single-user mode.
the "v" key for verbose mode.
4. To exit single-user mode type: reboot
5. Press Return.
You have successfully entered single-user or verbose mode when you see white text appear on the screen.
Then you may try to repair as follows using the FSCK
fsck is a command-line utility that may be able to verify and repair a disk. If you can successfully start up in Safe Mode or use Disk Utility while started up from a disc, you don't need to use fsck. However, here are some situations in which fsck may be necessary.
Your Mac OS X disc isn't available.
Your optical drive isn't available.
You can't start with a Safe Boot.
Tip: If you use a Mac OS X Extended (Journaled) formatted volume, such as with Mac OS X 10.3 or later, you probably won't need to use fsck. If you do use it for any reason, please be aware that benign error messages can appear.
If you're not sure how your volume is formatted and you can't start up from your Mac OS X volume to find out, type the following command in a command-line interface and then press Return: diskutil info /
If you see "File System: Journaled HFS+" returned, you have a Journaled volume.
To use fsck, you must run it from the command line. Unlike using your mouse to open an application to do something, you'll need to type a text command at the prompt (#) to tell fsck what to do. The Terminal application (/Applications/Utilities) and single-user mode are two examples of command-line interfaces in which you can type such commands. To use fsck:
Start up your computer in single-user mode to reach the command line.
Note: If necessary, perform a forced restart as described in the Emergency Troubleshooting Handbook that came with your computer. On desktop computers, you can do this by pressing the reset/interrupt button (if there is one) or holding down the power button for several seconds. On portable computers, simultaneously press the Command-Control-power keys. If your portable computer doesn't restart with this method, you may need to reset the Power Manager.
At the command-line prompt, type /sbin/fsck -fy
Press Return. fsck will go through five "phases" and then return information about your disk's use and fragmentation. Once it finishes, it'll display this message if no issue is found:
** The volume (nameofvolume) appears to be OK
If fsck found issues and has altered, repaired, or fixed anything, it will display this message:
*** FILE SYSTEM WAS MODIFIED ***
Important: If this message appears, repeat the fsck command you typed in step 2 until fsck tells you that your volume appears to be OK (first-pass repairs may uncover additional issues, so this is a normal thing to do).
When fsck reports that your volume is OK, type reboot at the prompt and then press Return.
Your computer should start up normally and allow you to log in.
About live verification in Mac OS X 10.4.3 or later
In Mac OS X 10.4.3 or later, you can verify your Mac OS X volume while started from it. This is known as live verification, and can be used in three different ways.
Option 1: Verify your disk using Disk Utility while started from the startup disk. To find out how to do this, see this article. Please note that live verification does not involve any disk repair, so if verification finds something that should be repaired, start up from your Mac OS X Install disc and use Disk Utility as described above in "Try Disk Utility."
Option 2 (advanced): Use the command line and the command-line utility, diskutil.
Start up your computer and log in as an administrator.
Open Terminal (/Applications/Utilities).
At the prompt, type the following command and then press Return:
diskutil verify /
Note: Don't use this method to check non-startup volumes.
You should see messages such as the following during the disk check:
Could not unmount disk for verification, attempting live verify
Started verify/repair on volume disk0s3 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.
Checking volume information.
The volume Macintosh HD appears to be OK.
Mounting Disk
Verify/repair finished on volume disk0s3 Macintosh HD
Option 3 (advanced): Use the command line and the fsck_hfs -l command.
Start up your computer and log in as an administrator.
Open Terminal (/Applications/Utilities).
At the prompt, type the following command and then press Return to determine your filesytem ID:
df -hl
Look for some lines of text that look like this:
Filesystem Size Used Avail Capacity Mounted on
/dev/disk0s3 37G 20G 17G 55% /
/dev/disk0s5 37G 37G 641M 98% /Volumes/Storage
Make a note of the first "disk" name that appears after /dev/, such as "disk0s3." This is your filesystem ID for your startup volume.
At the prompt, type the following command and then press Return:
df -hl
Then type the following command, where "disk0s3" is your filesystem ID you noted in step 4, then press Return:
sudo fsck_hfs -l /dev/disk0s3
When prompted, enter your admin password, then press Return to begin the verification.
You should see messages like these during the disk check:
** /dev/rdisk0s3 (NO WRITE)
** Root file system
** 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 Macintosh HD appears to be OK.
Additional Information
If you're interested in UNIX-style command-line syntax, here's a look at how a couple of flags used in our instruction can influence fsck:
The -y flag: Tells fsck that you want to answer "yes" to all questions about fixing, repairing, or salvaging information. This is the optimal approach, as answering "no" to any question causes fsck to stop. You cannot determine that all necessary repairs have been made until fsck completes and gives its final report.
The -f flag: Forces fsck to check "clean" filesystems when preening.
Macbook Pro 17" 7200 HD 1GB Powerbook G4 (15 inch FW 800) Mac OS X (10.4.6)
Macbook Pro 17" 7200 HD 1GB Powerbook G4 (15 inch FW 800) Mac OS X (10.4.6)
Macbook Pro 17" 7200 HD 1GB Powerbook G4 (15 inch FW 800) Mac OS X (10.4.6)

Repair Disk Error during Mountain Lion Install 2010 Macbook Pro

Hello All,
Last night like many of you I downloaded Mountain Lion to update to the newest Apple OS. During the install procress I was told my Harddrive was corrupted and needed to be repaired. After running the Verify Disk utility the following errors came up
Checking Catalog file,
Incorrect number of thread records
Incorrect number of thread records
Checking catalog hierarcchy.
Invalid volume file count
Checking volume information.
The volume Macintosh HD was found corrupt and needs to be repaired.
Then I used the repair utlity on the same screen.
The message was that it had attempted to repair it three times and it could not do so.
During the repair the error message incorrect number of thread records appeared twice.
Afterwards it no longer showed that harddrive as mounted and I cannot boot back into it. When booting it gives me the option of the Install Boot, the Recovery Boot, or my Windows Partition boot.
Two Questions
Is there a way to boot back into the OS to recover my files, I have most backed up but would like to get a few more on my external HD?
My other question is how can I sucessfully repair the disk so that I can do the above question and also install mountain lion.
Thank you,
Andrew

If you have no current backups, DO NOT TRY TO BOOT.
If you want to preserve the data on the internal drive(s), you must try to back up now, before you do anything else. It may or may not be possible. If you don't care about the data, you can skip this step.
There are several ways to back up a Mac that is unable to fully boot. You need an external hard drive to hold the backup data.
1. Boot into Recovery (command-R at startup) or from a local Time Machine backup volume (option key at startup.) Launch Disk Utility and follow the instructions in the support article linked below, under “Instructions for backing up to an external hard disk via Disk Utility.”
How to back up and restore your files
2. If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, boot the non-working Mac in target disk mode by holding down the key combination command-T at the startup chime. Connect the two Macs with a FireWire or Thunderbolt cable. The internal drive of the machine running in target mode will mount as an external drive on the other machine. Copy the data to another drive. This technique won't work with USB, Ethernet, Wi-Fi, or Bluetooth.
How to use and troubleshoot FireWire target disk mode
3. If the internal drive of the non-working Mac is user-replaceable, remove it and mount it in an external enclosure or drive dock. Use another Mac to copy the data.

Disk Error - Unable to fix with disk utility

My mac was acting a little wonky today - I noticed that some programs weren't shutting down when I tried to quit them, so I ran Onyx. Immediately I recieved the note that I needed to repair my start disk with the installation disk. So, I tried that. The disk utility was not able to repair it - The error I received was " Invalid catalog record type
Volume check failed
1HFS Volume Checked
1 volume could not be repaired because of an error
I thought about purchasing Disk Warrior to try to repair it but I have no idea if it will even work on this type of error. I did free up quite a bit of space from my HD because I thought perhaps there wasn't enough free space and ran the disk utility again. received the same error. I am a bit technically challenged when it comes to trying to troubleshoot. I thought perhaps someone would be able to tell me if I should invest in DW or I should just replace the Hard Drive. It's only about 9 months old. Thanks so much.

That is a directory error. It can be fixed with software, but Disk Utility is not an Industrial-strength fixer. There is NO compelling reason to replace your hard drive hardware.
Disk Warrior is a File utility. It works very hard to collect all possible information about your files, build a new directory, and (only if you allow it) to replace the old directory with its new error-free directory. It is a good tool to have on hand, and well respected in this marketplace.
It is not sensitive to the type of error encountered -- it will use all available info to build a new directory from scratch. That will eliminate the error. I own and use Disk Warrior, and recommend it.
You should be careful about using 10.3 and older versions of ANY Utilities on 10.4 and later directories, as the directory format changed a bit with 10.4.
I got a card in the mail for a US$50 (plus US$12 for discs) offer good through 31 October 2009 for several Utilities including Tech Tool Pro (another alternative to Disk Warrior). You definitely want the bootable disc of any disk repair utility you buy. It generally takes about five minutes to boot up, but it leaves your hard drive completely available to be repaired.
I have no connection to this company and do not know if it is reputable. Their package requires 10.4, 10.5, or 10.6 and seems to be offered by Intego as a promotion for their Virus Barrier and other software.
http://www.macpromo.com/

HP Envy x360 Stuck in "Repairing Disk Errors" Loop

So yesterday while I was using my computer as usual (on chrome using facebook to chat) the computer started freezing up on me, the usual fix for this is to ctrl- alt- delete and restart so i went to do that but the task manager was still having problems/ not wanting to boot up. Upon this happening I saw a "windows not responding, do you wish to close?" message in the lower left so I hit yes hoping windows would boot right back up and then I would as usualy be able to continue with work. The computer froze entirely not allowing me to hit any button. So at that point I manually powered down my PC, when the PC powered back up it came up with the "Repairing Disk errors. This might take over an hour to complete" error with the spinning dots.... Now I thought that maybe the shutdown had caused it to want to run a scan, so I left it alone for 3-4 hours to complete it's disk repairs. Upon returning to the computer I saw the same screen. So now looking for other repair options, I restarted it in BIOS mode as directed on another thread/ reset to defaults/ and then saved and exited. Once I did that I got the error screen that there was no installed operating system or hard drive which only gave me the system diagnostics screen you can press f2 to get to. I did that and then found upon running memory/ hard drive scans that my memory passed fine but it was not able to run hard drive scans either a quick or extensive test because it said "not installed". I then thought that maybe i jostled the lap top during the course of use that day and that I had to just open up the computer and reseat the hard drive. So I opened the laptop up, removed hard drive and replaced it as directed from the HP video that I found. The results remain the same. My main question is there anything that I am missing? I am hard pressed to believe that this laptop's hard drive which was not full/ brand new 6 months ago/ had anti virus software that ran regular scans and never found anything already went bad. My sony desktop ran for 7 years before problems, my dell notebook ran for 6 years before crapping out and I am just appalled that this brand new 900 dollar machine only has worked for 6 months. Do you have another fix I am missing that is common to this model (the envy 360) to get it out of this kind of loop?

Repairing disk errors is a process that will take a long time. It will appear to be stuck but this is normal most of the time depending on what it is repairing. Give it more time until fixed or you get another message.
Please mark my post as SOLVED if it has resolved your problem. It helps others with similar situations.

Disk error that I can't repair despite logical steps

1. I ran Disk Utility within OSX and detected a disk error but the option to repair was grayed out
2. I ran my back up system to ensure I have an up-to-date clone on my LaCie external HD
3. I booted Norton Utilities from CD which couldn't repair the error
4. I ran Apple Hardware Extended test which said there were no hardware problems
5. I began wondering if it was a software issue rather than a hardware one...
6. I booted Disk Utility from my Tiger Install DVD which also detected a disk error but could not fix it
7. Thinking that reinstalling Tiger might do the trick, I tried to 'Archive and Install' Mac OS X Tiger from the DVD twice, but each time it was unable to complete the install and asked me to start over again
Any ideas how to fix this error?
I am working quite intensively with iMovie at the moment, which crawls on my 3 year old 1 GHz PowerBook. One file has grown to a whopping 18 GB in size. Could this be part of the problem? I performed permissions repair, disk verification and defrag successfully last week before starting on my iMovie project, so the system was pretty well optimised, I thought.

Thanks, Miriam. I regularly run Utilities to ensure my system stays in good condition. Especially as I work with images a lot and sometimes - like now - with video. So, it was routine maintenance I guess. However, some applications have been a little slow to open or struggled to open files recently as well.
Regarding Disk Warrior etc, being an individual rather than a corporate user, obviously I'd rather avoid spending the money unless I absolutely have to. In addition, being in UK, it may take time for the disk to arrive and I don't think my nearest Apple Store stocks Disk Warrior - it's not on the UK online store anyhow (strangely). TechTool Pro is more expensive still. Sorry if I sound stingy, I just am being careful with my money. If I need to buy Disk Warrior, of course I will.
Thanks, A Brody, for the welcome. I regularly clone my entire system so I have a bootable backup, but thanks for the reminder anyway!
I appreciate the comments from both of you about Norton in this regard.
Since the Apple Hardware Extended test indicated no hardware faults, am I right to think it is probably more to do with software? Or should I be concerned about my hard disk or other hardware?
PowerBook G4 Mac OS X (10.4.5) 1 GHz PowerPC G4 | 1 MB L3 cache | 768 MB DDR SDRAM

Do you understand this "Repair Disk" error message?

I ran "Repair Disk" and it said the disk could not be repaired (see below for the detailed message).
QUESTION: If I use Apple's Migration Assistant to move my files to another Mac, will I carry this error with me? (In other words, will moving my files to a new Mac just move this problem to the new Mac?)
DETAILS: I booted with my Install Disc and went to:
Disk Utility -->First Aid -->Repair Disk and I got this error message:
Overlapped extent allocation (file 4761162)
Overlapped extent allocation (file 4764806) .....
Volume Bit Map needs minor repair
Checking volume information
Invalid volume free block count
(It should be 12313316 instead of 12311160)
Repairing volume
The volume Macintosh 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

It looks like a directory structure problem. You should try to get rid of it asap, since that could lead to bigger problems. You could try a 3rd party utility, like DiskWarrior or TechTool Pro.
No, using Migration Assistant shouldn't carry this error over.

WD External disk Error: Filesystem verify or repair failed

Hi all
My Western Design external hard drive has started to run really slowly when accessing data as well as transferring. After plugging the usb to the mac it takes about 30 seconds to pick up the drive with a DISK ERROR message. I have been into disk utilities and tried verifying the disk and repairing with the following message coming up...
Verify and Repair volume “LEILA”
** /dev/disk1s1
** Phase 1 - Preparing FAT
** Phase 2 - Checking Directories
Unable to read directory (Input/output error)
Error: Filesystem verify or repair failed.
Details of the external follow:
Disk Description : WD Elements 1023 Media
Total Capacity : 465.8 GB (500,105,740,288 Bytes)
Connection Bus : USB
Write Status : Read/Write
Connection Type : External
Partition Map Scheme : Master Boot Record
Any help would be appreciated
Thanks

It sounds like your WD drive is failing. Download Smart Utility from http://www.volitans-software.com/smart_utility.php and see what it says about the health of the drive.
If you scan various discussion groups, you'll see issues with WD external drives, as the electronics can be problematic.

Disk repair utility & printer issue

I will admit right now that until last night, have never touched an iMac but I have a friend that due to health issues, needs a hand. Can I ask a couple of questions of this forum?
1: She has an external Lacie H/D that is making wierd noises after being knocked over. Her backup software says to run the Disk Repair Utility. I haven't the slightest idea where to find this Disk Repair Utility, nor if I can run it on an external drive.
2: Her printer, mac book and iMac were recently moved from one location to another home. I need her printer connected wirelessly to both computers. I was able to get her Macbook connected but I am having issues with iMac. Can I uninstall her printer and reinstall? Not even sure how to do that basic process so advice would be appreciated.

Disk Utility should be able to check the LaCie - whether it will be able to complete any repairs that may be needed will become obvious when it's attempted. Disk Utility is normally in the Utilities folder within the Applications folder.
Regarding the printer, yes you can uninstall it in System Preferences>Printers & Scanners (or similar wording depending on version of OS X). The +/- buttons add/remove printers.
If you still have problems, post back.

Receiving non system disk error when trying to install Windows 8.1 full version on Mac Mini

I am trying to install Windows 8.1 full version on a Late 2012 Mac Mini using OS X 10.9.2 using boot camp.
The windows partion has been created but when the mac mini reboots I receive a Non System Disk error. Press any key to continue
Please could someone assist with my problem

Thanks for that information, I removed all the external devices except the Superdrive.
Ran Boot camp again, created the MS Dos partition, and the mac restarted.
Now I have received the "No bootable device -- insert boot disk and press any key"
Please help

Repair utility says to load the disk, but no disk is provided.

The Lion comes as a downloard, no disk. But the repair utility says to insert the disk to to the repair.
I asked tech support if that were true. She said it was not true. I asked them to change the instructions to reflect what one really needs to do to repair the computer if it fails, and she hung up on me. (Really, no profanity, no insults, just a plain question. Must be a rough week with the Lion intro)
I still need to know if I need a disk available to repair the computer if it fails. Or how one would know how to repair it if it does fail without the disk and without the computer giving me instruction.
There is no written manual to explain. I am guessing that the we are presumed to be omnicient.

I've noticed that Lion creates a Recovery partition on your hard drive. Did the message say Repair or Recovery?
Phil

Purchased Lion, installed it - once I log in - i get the curtain and message to hold the power button till it shuts down. Worked with the disk repair utility - fixed permissions - still can't get past the "black curtain of death" any suggestions?

purchased Lion, installed it - once I log in - i get the curtain and message to hold the power button till it shuts down. Worked with the disk repair utility - fixed permissions to hold the power button till it shuts down. Worked with the disk repair utility - fixed permissions - still can't get past the "black curtain of death" any suggestions?
My machine was patched to date 10.x.x. I was lucky to get an internet connection and I selected the option to re-download Lion... its curruently being downloaded. What if that doesn't work?
Any thougths would be appreciated.
Joe

And you have a workstation? not a notebook.
Usually a driver or hardware, nothing that Disk utility will fix.
You know of course what a Prohititory Sign is?
prohibitory sign, kernel panic
Forum devoted to Lion:
Mac OS X v10.7 Lion Communities
Tips and FAQs
FAQ kernelpanic
Resolving Kernel Panics
Avoiding eliminating Kernel panics
Lion App Compatibility Table - RoaringApps
RoaringApps Mac OS X Lion Application Compatibility
did you make sure your apps, drivers, and hardware support Lion?

Drives stopped mounting with FW800, but FW400 is OK. Worked OK before, but won't now. Tried new cables, zapping pram, Disk Repair Utility. Any suggestions? Thanks.

Drives stopped mounting with FW800, but FW400 is OK. Worked OK before, but won't now. Tried new cables, zapping pram, Disk Repair Utility. Any suggestions? Thanks.

If your external drive does not have an independent power supply, you may wish to consider a couple of lower-cost options before tossing the drive. Bus-powered drives have no external power source and must get all their power from the computer. They can exceed the computer's USB energy budget.
Cheapest option:
1 Meter USB 2.0 A to 5 Pin Mini B Cable - Auxiliary USB "Y" Power Design for external hard drives.
This gets power from two of the computers USB porst sna can provide enough power to wake up an under-performaing bus-powered drive.
If you don't have enough ports to use this, try the next cheapest option:
Newer Technology 7 Port Hi-Speed USB 2.0 Hub with Power Adapter for Mac & PC
Such a hub has a an independent power supply to make up for wahat the comptuer fails to provide.

Disk Repair Utility Full Disk Error

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