Disk Utility hangs when erasing external disk

In Time Machine I wasn't able to figure out how to attach an external drive via USB. I guessed that it probably wouldn't work on a MS-DOS filesystem, so I started Disk Utility, which I never have used before. I have formatted disks before on Linux and on Windows, so it's nice to see a great app for this.
In the Time Machine brief help text, there is not mentioned what kind of filesystem that is required or if it work with any filesystem. So I searched, and it seems as if HFS+ journaled case-insensitive is the filesystem that one should choose. Can anyone confirm this?
When I click erase then the Disk Utility program hangs and I see the spinning beachball. The Activity Monitor program shows that disk activity stops after a few seconds. There is no more activity, so after 5 minutes I stop the program.
I have tried several times, and I see the same behavior. I even tried restarting the computer. But no luck.
Now my external disk no longer shows that it's a MS-DOS filesystem, but shows that it's HFS+ journaled case-insensitive. Probably not ok so far. I try creating a single patition, with format: HFS+ journaled case-insensitive, without OS 9 drivers installed. When I click apply then spinning beachball again and diskactivity stops after a few seconds, and I stop the program after some minutes where it has been inactive.
My guess is that the disk-erasing task failed and has left the disk in a broken state. During this task Disk Utility began to hang for a reason that I don't know.
My second guess to why the create-partition task failed, is that the disk is in a broken state, and thus the partition cannot be created, and Disk Utility hangs.
How do I format the external disk from the command line?

In Disk Utility, select the drive mechanism (not the volume on it) and click the Partition button. Use the Options button to choose the GUID partition scheme, then make one HFS+ (Journaled) volume.
There is no point in using the command line for this task, because if Disk Utility cannot deal properly with the disk, Mac OS X will not either. Disk Utility is using diskutil to do the partitioning and formatting.

Similar Messages

Disk Utility hanging on Erase/Partition OR Howto backup a dual boot Mactel?

I'm trying to use Disk Utility to format an external usb hd as HFS+ for backing up my Macbook. Running 10.4.7 and Disk Util 10.5.6 (latest version afaik)
Problem is whenever I try to either Erase format a hard drive using my usb2 external enclosure, Disk Util just kinda freaks, not really doing anything, and after a minute or so becomes the program becomes unresponsive. Luckily the rest of my system keeps on working, and I can just force quite disk util. But when I try to shutdown/restart my system I'm forced to do a hard power down.
I've tried leaving Disk Util running overnight, thinking it was just needing a little extra time to get thru the process, but nothing changed when I woke. And a gave the macbook a good hour to shutdown cleanly, but it stays stuck with the blue screen and the spinning gray wheel at the very end of teh shutdown cycle.
Looking at the disk util log (after force quiting and restarting the util) it will simply say:
Aug 12 03:24:09: Disk Utility started.
Preparing to erase : “Mb”
Creating Partition Map
Aug 12 03:25:50: Disk Utility started.
I've also tried running disk util off the osx install cd (tiger 10.4.6), but i get what seems to be identical behavior, and i have to manually turn off the macbook.
I've tried this with two hard drives with identical results. In Windows (boot camp) im able to format the partition fine, but it only does ntfs because of the drive's size (and I'm not trying to use a windows fs anyway).
I plugged the usb hd into a powerbook, and used a 10.4.0 retail cd to run disk util (no hd in the powerbook) and its able to erase/partition the disks just fine. I can then plug them back into the macbook and theyre recognized just fine. But its PPC system and doesnt offer for gtp partitioning which I'm thinking will be a problem because ultimately I'm trying to use this drive to do bootable backups of my macbook.
I'd like to figure out what is wrong with Disk Util. But even if i get the partitioning working, i have the larger problem of -how- to backup the macbook's hd onto an identical sized hd (80 gigs), that will make both osx and windows bootable backups that I can restore off of.
One thought was to use the unix utility dd, and just do a bitwise copy of one disk to another. Any idea if this would work?
Another option would be manually creating the partitions myself, and then backing up each of the drives seperately. Not sure if I could even make a bootable backup of windows from within osx.
I know I'm not the only one running boot camp and looking to have reliable backups. What are other people doing to address this issue.
Ideally I would like to find a solution that:
*creates an identical disk with two bootable partitions
*can be automated, or at best a few simple steps that can be done once and then walked away from
Thanks for the help
macbook Mac OS X (10.4.7)

I'm trying to use Disk Utility to format an external usb hd as HFS+ for backing up my Macbook. Running 10.4.7 and Disk Util 10.5.6 (latest version afaik)
Problem is whenever I try to either Erase format a hard drive using my usb2 external enclosure, Disk Util just kinda freaks, not really doing anything, and after a minute or so becomes the program becomes unresponsive. Luckily the rest of my system keeps on working, and I can just force quite disk util. But when I try to shutdown/restart my system I'm forced to do a hard power down.
I've tried leaving Disk Util running overnight, thinking it was just needing a little extra time to get thru the process, but nothing changed when I woke. And a gave the macbook a good hour to shutdown cleanly, but it stays stuck with the blue screen and the spinning gray wheel at the very end of teh shutdown cycle.
Looking at the disk util log (after force quiting and restarting the util) it will simply say:
Aug 12 03:24:09: Disk Utility started.
Preparing to erase : “Mb”
Creating Partition Map
Aug 12 03:25:50: Disk Utility started.
I've also tried running disk util off the osx install cd (tiger 10.4.6), but i get what seems to be identical behavior, and i have to manually turn off the macbook.
I've tried this with two hard drives with identical results. In Windows (boot camp) im able to format the partition fine, but it only does ntfs because of the drive's size (and I'm not trying to use a windows fs anyway).
I plugged the usb hd into a powerbook, and used a 10.4.0 retail cd to run disk util (no hd in the powerbook) and its able to erase/partition the disks just fine. I can then plug them back into the macbook and theyre recognized just fine. But its PPC system and doesnt offer for gtp partitioning which I'm thinking will be a problem because ultimately I'm trying to use this drive to do bootable backups of my macbook.
I'd like to figure out what is wrong with Disk Util. But even if i get the partitioning working, i have the larger problem of -how- to backup the macbook's hd onto an identical sized hd (80 gigs), that will make both osx and windows bootable backups that I can restore off of.
One thought was to use the unix utility dd, and just do a bitwise copy of one disk to another. Any idea if this would work?
Another option would be manually creating the partitions myself, and then backing up each of the drives seperately. Not sure if I could even make a bootable backup of windows from within osx.
I know I'm not the only one running boot camp and looking to have reliable backups. What are other people doing to address this issue.
Ideally I would like to find a solution that:
*creates an identical disk with two bootable partitions
*can be automated, or at best a few simple steps that can be done once and then walked away from
Thanks for the help
macbook Mac OS X (10.4.7)

Disk utility error when erasing an external hard drive

Hi,
Not sure if this is the most appropriate fourm list to post this but I thought I'd give it a try.
I am running snow leopard on my MBP and am trying to use disk utility to erase and format an ext. HD. While the disk icon does not show up on the desktop when I connect it to my mac, Disk utility does show the ext. hd in the left column, but no matter what format I try, even just using one partition and selecting zero out all data, I get the following error: "disk erase failed with the error: POSIX reports: The operation couldn't be completed. Cannot allocate memory".
Is the hd dead? Are there other options? I do have disk warrior, version 4.1.1 and it does not regonize the ext. hd.
Please advise.
Thanks,

Thanks for the reply. Yes, I did select the ext hd as the one I wanted to erase (my internal hd is my start up drive). After I selected the ext hd, (there is no volume listed under it so the only thing I can select is the hd itself). that is when I selected erase and then Mac journaled, then named the hd and then after selecting erase, I got the error. Also as a matter of note, if I select firstaid, both the repair and verify permissions are dimmed, so I can't even try to repair the disk. That is when I tried disk warrior hoping that could examine the hd, but since it is not mounted on the d/t, it doesn't show as a drive to check. I don't understand why the ext hd shows up in disk utility, but not the d/t. Also of note is the fact that when I connect that ext had to my Mac with a fw cable, a window opens saying that the drive is not readable and do I want to initialize it or ignore. I choose to initialize and that is when I get the error. Also of note is that I have tried both security options of "don't erase data" and "zero out data" and still get the same error.
Hope this clarifies things a bit.

Disk Utility Hangs When Creating a New Partition

Hello,
I recently purchased a Late 2005 Power Mac G5. My problem is, that the hard drive is 250 MB and only one partition appears in the disk utility of 37 GB. I try to add a new partition, but it hangs on "modifying partition map". Any Help?
Additional info -
Main Disk
Name : WDC WD2500JD-41HBC0
Type : Disk
Partition Map Scheme : Apple Partition Map
Disk Identifier : disk0
Media Name : WDC WD2500JD-41HBC0 WDC WD2500JD-41HBC0
Media Type : Generic
Connection Bus : Serial ATA
Connection ID : Device 0, "A (upper)"
Device Tree : first-boot/@0:0
Bay : "A (upper)"
Writable : Yes
Ejectable : No
Mac OS 9 Drivers Installed : No
Location : Internal
Total Capacity : 232.9 GB (250,059,350,016 Bytes)
S.M.A.R.T. Status : Verified
Disk Number : 0
Partition Number : 0
Partition -
Name : Mac OSX 10.5
Type : Volume
Disk Identifier : disk0s3
Mount Point : /
File System : Mac OS Extended (Journaled)
Connection Bus : ATA
Device Tree : first-boot/@0:3
Writable : Yes
Universal Unique Identifier : 989D8CCE-3C5D-3ECC-9A12-C025D2DF23F2
Capacity : 37.1 GB (39,873,503,232 Bytes)
Free Space : 24.5 GB (26,274,824,192 Bytes)
Used : 12.7 GB (13,598,679,040 Bytes)
Number of Files : 484,775
Number of Folders : 110,579
Owners Enabled : Yes
Can Turn Owners Off : Yes
Can Repair Permissions : Yes
Can Be Verified : Yes
Can Be Repaired : Yes
Can Be Formatted : Yes
Bootable : Yes
Supports Journaling : Yes
Journaled : Yes
Disk Number : 0
Partition Number : 3
Thanks

Have you tried doing this first:
Repair the Hard Drive and Permissions
Boot from your OS X Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer. Now restart normally.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
If there are no errors reported then try the routine I suggested rather than trying to expand the existing partition just try to Add a second partition as you have tried before.
If this still gets you nowhere, then I'm afraid you're left with having to repartition from scratch. You'll want to backup the existing files if you don't wish to lose them. I would then do this:
Drive Preparation
1. Boot from your OS X Installer Disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu.
2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Note the SMART status of the drive in DU's status area. If it does not say "Verified" then the drive is failing or has failed and will need replacing. SMART info will not be reported on external drives. Otherwise, click on the Partition tab in the DU main window.
3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, set the partition scheme to GUID (for Intel Macs) or APM (for PPC Macs) then click on the OK button. Click on the Partition button and wait until the process has completed.
4. Select the volume you just created (this is the sub-entry under the drive entry) from the left side list. Click on the Erase tab in the DU main window.
5. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, check the button for Zero Data and click on OK to return to the Erase window.
6. Click on the Erase button. The format process can take up to several hours depending upon the drive size.
When the above is completed quit DU and return to the installer. Complete the OS X installation.

DIsk Utility Hangs When Formatting USB flash drive

I have a 4gb USB drive (Jetflash by Transcend) that's been usable formatted as FAT. I'd read that i/o would be a lot faster if I formatted as Mac OS Extended instead. In fact, I've done this with previous USB drives with success. When I try to reformat the drive in Disk Utility, it stalls at "Preparing to Erase." I've also tried going through Partition instead, but again, just stalls at the beginning. This is not a freeze or hang or spinning ball moment, but it will just sit there not doing anything. I can quit out of DU at any time. I've left DU alone, thinking this just may take a while, but it has stayed this way up to 3 hours. Suspiciously, there are no blinking lights on the usb drive during this process. I realize every USB flash drive must have different firmware that reacts differently to Macs and I may just be unable to Mac-format this. I've also taken the drive to other Macs all running 10.4.7 with the same results. Any ideas or workarounds will be appreciated. Thanks.

Update: I've tried on a 3rd mac, my g5/1.8 at home and plugged the USB flash drive to a powered usb hub. Now Disk Utility doesn't stall, but instead immediately states that it can't access the partition map. As the drive has public/private partition capability and also security features, I'm going to assume that's the reason for it to be only formattable as FAT. So now I'm looking for large capacity flash drives that are mac-formattable or find information that throughput is the same on a USB drive no matter how it's formatted.

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.

Disk utility hangs MAC G4?

Why does Disk Utility hang when starting? ~ Doug

Hi, Doug.
A little more detail on how you are launching Disk Utility on the stated "G4" would help. Some more details about the specific G4, and the problems that may have led to you attempting to run Disk Utility on it would also be useful.
Try running steps 1-2 of the Procedure specified in my "Resolving Disk, Permission, and Cache Corruption" FAQ.
Good luck!
Dr. Smoke
Author: Troubleshooting Mac® OS X
Note: The information provided in the link(s) above is freely available. However, because I own The X Lab™, a commercial Web site to which some of these links point, the Apple Discussions Terms of Use require I include the following disclosure statement with this post:
I may receive some form of compensation, financial or otherwise, from my recommendation or link.

Disk Utility hangs attempting to erase SimpleTech 100gb external USB disk

I'm attempting to erase and format a SimpleTech 100gb external USB disk. Disk Utility hangs. The system error log says:
"AppleUSBEHCI[0x1d59000]::Found a transaction past the completion deadline on bus 91, timing out!
Jul 21 17:30:35 Kari-Hohnbaums-Computer-2 kernel[0]: USBF:"
The console log (and Disk Utility log) shows:
Preparing to erase : “PBEX1”
Creating Partition Map
error writing partition map: Device not configured (6)
Disk Erase failed with the error:
What is the problem? This disk is recognized by Tiger but only as read-only as it ships as an NTFS volume and must be erased and reformatted before it can be used by a MAC.
All help appreciated.

I tried the partition approach and it unfortunately failed as well. The same "hung" symptoms as before. The green light (disk activity) on the disk flashed several times at the initial request, but that was all. I eventually interrupted it after a hourn which generated the same system log message: AppleUSBEHCI[0x1d59000]::Found a transaction past the completion deadline on bus 91, timing out!
The disk utility log says:
Preparing to partition disk: “SAMSUNG HM100JC Media”
Partition Scheme: Apple Partition Scheme
Mac OS 9 Disk Drivers installed
1 partitions will be created
Partition 1
Name : “PBEX1”
Size : 93.2 GB
Filesystem : Mac OS Extended (Journaled)
Creating Partition Map
Partition failed for disk SAMSUNG HM100JC Media Device not configured
Partition complete.
I don't have easy access to a Window's box. I do have access to a Linux system. Perhaps I can configure it there and it will work on my PB.

Disk Warrior/Disk Utility Hangs with External HD

okay, so i will try to make this as quick as possible.
last year, i had an external hard drive that i had been saving all my audio work on. one day i had to restart (i was having a lot of problems with my then IBook G4) so i did, and the drive was no where to be found. made sure there was no connection problems (ie my USB ports) and everything seemed fine. let it sit for a while, thinking maybe it was just tired or something. tried again, same story, and it also made disk utility hang. tried it on a friends mac, same issue.
i also had a a lot of video/music that i watched with my xbox 360. i could still access those files with the xbox, which was weird.
so then my ibook eventually died, and here i am with a newer G5 quad. i tried it again, and still the disk utility hangs, and ive also tried Disk warrior 4. this also hangs.
also, i have tried switching the enclosure to no avail.
its not the end of the world if i cant get the data back, but i would REALLY like to.
any suggestions?

System Profiler shows the same thing: "Manufacturer: PI-236" for each of these HDs. I'm not sure how to rename these drives (I'm not talking about the partitions on them, which I've given descriptive names).
The strange thing is that on my MacBook Air (upgraded to Lion) one of these HDs (now connected via USB) shows up in Disk Utility as "Ext Hard Disk Media" instead of "PI-236". Still not a whole lot of information, you'll notice.
Another external HD (partitioned earlier under Snow Leopard) is shown correctly as "SAMSUNG HD501LJ Media" on both computers.

Disk utility hanging/ not responding.

so i've been having some drive issues recently. one of the manifestations of this is while trying to open Disk Utility to repair permissions, verify disk, etc. it hangs as soon as the superdrive makes it's noise. it's usually fixed by a restart, but invariably happens again. it's usually coupled by some other funkiness when accessing a disk internal or external (ex. reconnecting media in FCP or choosing system settings in FCP)
i have had slight quirks from the super drive. it wont read blank CDs or DVD-DL. DVDs and blank DVDs have been fine, CDs with media on them have been fine too.
as far as disk maintenance, i recently reformatted my startup disk and reinstalled SL and restored from a back up. have run disk warrior, repaired the disk from SL install disk and permission repairs.
any help appreciated

HI,
Go to ~/Library/Preferences then move the com.apple.DiskUtility.plist file to the Trash.
~ (Tilde) represents your Home Folder.
Then restart your Mac.
Carolyn

Disk utility can't repair external hard drive

A couple months back, I had to get a whole new hard drive case for my external because the power cord broke. Anyway, It's worked fine until now...
The hard drive doesn't show up with the other volumes.
It does show up on Disk Utility. When I try to repair or verify the drive, it works up until the end, but then it automatically quits and it says this:
Verifying volume “FIREWIRE”
** /dev/disk1s1
** Phase 1 - Read FAT
** Phase 2 - Check Cluster Chains
** Phase 3 - Checking Directories
Unable to read directory (Input/output error)
Error: The underlying task reported failure on exit
1 non HFS volume checked
Volume needs repair
Anyway, I have 45GB of music as well as movies and photographs that mean a lot to me so I hope I don't have to erase the drive or anything...
Thanks to anyone who helps me out.

Hmm, I can't seem to find anything on Windows (XP) that will fix my exact problem...
Then again, I am the crappiest Windows user ever so, once again, any help would be great.
I searched "disk repair" on the help and support center, and it gave me a bunch of ways to fix the drive depending on the problem. The thing is, none of the problems seemed to match mine...
Your personal data files are missing or have been corrupted, or you want to revert to a previous version of a file.
After updating a device driver, you can log on, but the system is unstable.
After installing a new device, the system is unstable.
Changes made to your system or application settings are causing your computer to run poorly and you do not know how to restore the previous settings.
After installing an application, the system is unstable or an application is not working properly.
Operating system does not start (the logon screen does not appear)
I'm not really sure what the exact problem is, I just know that it isn't working on the Mac, but it is on the PC.

Are my photos completely gone if i went into disk utility and clicked erase, or can i recover them?

i wanted to put my macbook pro back to factory settings and re installl the disk. so i went into disk utility and clicked erase, after that i realized i did not put my pictures on my external drive and now i'm wonder even though i pushed erase in disk utility for my HD are my photos just gone off my computer and hidden in files that i have to recover. because i tried a few softwares that i downloaded and i found some of my photos but couldnt get them cause the software was a demo.
main question is even though i clicked erase HD and my pictures aren't on when i re install the mac DVD can i still recover them somehow??

I'm assuming that you were booted from the Mac install disk or recovery partition when you clicked Erase? (It's impossible to erase a disk you're booted from, at least using Disk Utility).
Do you have a backup of your computer, perhaps using Time Machine?
If not, and you still want to recover your pictures, first, STOP. Do not re-install Mac OS X. Installing the system and applications will overwrite your hard drive and potentially permanently lose your deleted files.
The only way you can retrieve your files is by using data recovery software such as Data Rescue. No, it's not cheap, but you have to decide what your photos are worth to you. You would need to run it from another Mac, ideally, and connect to your Mac using target mode.
If you're uncomfortable with that, you should seek a local reputable Mac/data recovery consultant.
The utility kaz-k points you to is not a solution to your problem. It's an Unerase Trash program.
Matt

Disk Utility hanging on all user accounts

Hi,
I suspect that my son applied new permissions to enclosed items somewhere and that this is the reason that Disk Utility hangs (doesn't respond) when I start it. As a remedy I repaired permissions while started from an external disk and then applied some command lines that I learned for resetting user account permission (http://discussions.apple.com/thread.jspa?threadID=1655174&tstart=0). But still DU is unresponsive and must be force quit. Additionally I cannot open the DVD tray and Firefox tells me "...update available but you do not have the systems permissions required to install it....".
So I think my user permissions reset was not successful. My question is: did the command line language change from Leopard to SnowLeopard because Terminal gave me some feedback that "-H makes sense only with R" or something to that effect.
Do you have any idea about these things? What's the best way to proceed? Thanks.

Has command line language changed in SnowLeo compared to Leopard?
There are a few changes that reflect the differences between the two OS versions but the vast majority of commands are the same. There are hundreds of commands. Including the flags, switches, & options available for them there are thousands of variations. Plus, characters like spaces, slashes, dashes, & quote marks have special meaning depending on where they appear in the command line so even a minor typo can dramatically change a command into something other than what you want.
Because of this, you should not use a command unless it is specifically recommended for an issue you have explained completely or you have at least a fundamental understanding of command line syntax & the options for a command you are going to use. Each command has a manual page ("man page" for short) that you can access in Terminal by typing the word "man" followed by a space followed by the command name. For example, try "man man" to see the manual page explaining that command.
It would help greatly if you could provide the exact command & flags you used, plus any error messages they generated. Also, "standard procedures" doesn't tell us much since different users consider different things standard.
I suspect your problem is not caused by mis-set permissions, although they may have lead to the condition that caused it. But without more info it is hard to say what the problem is or how to fix it. It might be simplest just to reinstall the OS (which for Snow Leopard is not that big a deal), let Software Update bring it up to current versions, & then deal with any remaining user level permission issues separately.

External Hard Drive Disk Utility Can't Repair the Disk

Hi,
I have a Seagate 1 TB Backup Plus Drive which was working perfectly fine until I plugged it into a USB hub. It detected it while in the hub and I was able to get files off of it, but when I ejected it from the hub and put it back into the USB slot on the computer it was not detected by finder. It shows up in the disk utility and I clicked verify and repair and it says:
Verify and Repair volume “Seagate Backup Plus Drive”
Checking file system
Volume repair complete.
Updating boot support partitions for the volume as required.
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.
Is there any way to get this to work properly again? Or if not is there a way for me to recover my files on the external hard drive?
Thanks
I have a Macbook PRO late 2011 running OS X Mavericks.

Use a more powerful utility such as DiskWarrior, or a product such as those listed here.
(108710)

Disk Utility Hangs during format

Yes, I've seen a hundred other posts on this but all have been archived with no solution.
It seems very likely there is a 10.4 problem. When I try to format a 160GB drive connected via USB Disk Utility hangs and never completes. I have tried to partition it as well with no luck.
Is there a fix? Is Apple working on the problem? Is there a workaround? Even a commandline fix would be acceptable.

This is ridiculous. I have tried 4 different physical drives in 4 different physical enclosures (3 different brands) and it still hangs Disk Utility.
I know I'm not the only one with this problem. What the **** is going on? I can't format a disk and therefore I can't use it. This is absolutely unacceptable.
Sometimes my machine hangs in such a way that I can't even reboot it, it requires a physical power down.
I have been forced to format these on a Windows machine with FAT32 (using a 3rd party app to get past the GB limitation MS sets). I don't want FAT32, I want HFS+. But I can find no other way to do this in Tiger as it ALWAYS hangs regardless of drive, enclosure, filesystem type, size, number of partitions, etc, etc.
Is OS X truly this bad that it can't even format a drive properly? Am I really going to have to rely on Windows and FAT32 whenever I want to format?

Disk Utility hangs when erasing external disk

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