Disk Warrior hangs in 10.4.7

I originally posted this in the Tiger section in April, when I was using 10.4.6 - no replies then so I'm hoping someone's found a solution since. I just updated to 10.4.7 but the problem remains unchanged. It only seems to be an issue on the Powerbook; Powermac desktops running Tiger have no problems running the complete Disk Warrior routine.
Original post:
I've read just about every post relating to Diskwarrior here, but this seems to be a new wrinkle. Recently I took my G4 Powerbook (15" aluminum 1.25 GHz) from 10.3.9 in steps up to 10.4.6. No problems, did all the recommended things (repair permissions before and after each update, etc.). The volume is journaled. No issues with Firewire external drives. Apps seem to run OK.
Today I bought DW 3.0.3 rev 39 thinking that now with Tiger I'd need that revision. (I had been using rev 38 with 10.3.9, no problems.) It boots from the CD fine, but when I run it it hangs up during the final "looking for differences in files/folders" stage. It may get only to 2-300 tests, it may get to 90,000 tests, but then it just hangs. The blue progress bar continues to "ripple" but no further progress happens. If I hit "skip" it'll go to the report, telling me (in red) that some repairs have been made, and that "nnn files will now be accessible."
I hit "cancel", then quit DW to reboot the Powerbook. I can boot from the OS X install DVD and run Disk Utility to verify the hard drive as OK, and to repair permissions (one more time). According to DU, everything's fine - and the 'book does appear to run normally. It's just that DW always hangs at that last stage.
Someone suggested that even if I skip the remainder of the DW process I can go ahead and replace the rebuilt directory. I've done that a couple of times but it leaves me with a very hinkety feeling.
Thanks in advance for any help!

If you have DW v3.0.3 Revision 38 (and not DW 3.0.2 in any revision because 3.0.2 was for OS X 10.3.x), you can use that on your machine. You can use v3.0.3 on any version of OS X from 10.2.1 to 10.4.x.
Alsoft updates DiskWarrior for the sake of new hardware that is released with updated Boot ROMs. The new revisions are created so that they will be able to boot the new machines. The software itself is the same.
For example, I use the original 3.0.3 version of DW on my G5 iMac, but since the DW disc won't boot the iMac, I use a version that's installed on a boot volume I keep on an external for the purpose of maintenance.
Good luck!

Similar Messages

Disk Warrior hangs in 10.4.7 too

I originally posted this in April, when I was using 10.4.6 - no replies then so I'm hoping someone's found a solution since. I just updated to 10.4.7 but the problem remains unchanged. (Not sure if this should be posted here or in the Powerbook section, since it only happens on the PB.)
Original post:
I've read just about every post relating to Diskwarrior here, but this seems to be a new wrinkle. Recently I took my G4 Powerbook (15" aluminum 1.25 GHz) from 10.3.9 in steps up to 10.4.6. No problems, did all the recommended things (repair permissions before and after each update, etc.). The volume is journaled. No issues with Firewire external drives. Apps seem to run OK.
Today I bought DW 3.0.3 rev 39 thinking that now with Tiger I'd need that revision. (I had been using rev 38 with 10.3.9, no problems.) It boots from the CD fine, but when I run it it hangs up during the final "looking for differences in files/folders" stage. It may get only to 2-300 tests, it may get to 90,000 tests, but then it just hangs. The blue progress bar continues to "ripple" but no further progress happens. If I hit "skip" it'll go to the report, telling me (in red) that some repairs have been made, and that "nnn files will now be accessible."
I hit "cancel", then quit DW to reboot the Powerbook. I can boot from the OS X install DVD and run Disk Utility to verify the hard drive as OK, and to repair permissions (one more time). According to DU, everything's fine - and the 'book does appear to run normally. It's just that DW always hangs at that last stage.
Someone suggested that even if I skip the remainder of the DW process I can go ahead and replace the rebuilt directory. I've done that a couple of times but it leaves me with a very hinkety feeling.
Thanks in advance for any help!

For everyone's info, I got a reply in another thread on this problem and am paraphrasing it here: The suggestion was to go back to DW 3.0.3 rev 38 for the Powerbook, rather than rev 39. The difference between the revisions apparently has only to do with allowing the CD to boot newer hardware, and the actual DW software is the same. I did not know - or forgot if I did read it somewhere - that it's the boot issues that are changed, and not the actual DW-function software. Luckily I'm a packrat so I still had my 3.0.3 rev 38 CD available and when I booted from it on the Powerbook, all the tests, etc. ran fine.

FYI: New version of Disk Warrior seems to hang when run with Snow Leopard

FYI: It seems that the new version of Disk Warrior hangs when run in Snow Leopard

I have been using DW 4.2 on 10.5.8 and the speed-up was the first thing I noted, too, so it isn't just SL.
Now if it would only 'come up for air' and respond to input to move window (so I can put it where I can see it if needed) I'd like that.
There is a 23 page review of Snow Leopard on Ars. On page 22:
People sometimes ask what, exactly, is wrong with HFS+.
Aside from its obvious lack of the features just listed, HFS+ is limited in many ways by its dated design, which is based on HFS, *a twenty-five year-old file system.*
To give just one example, the centrally located Catalog File, which must be updated for each change to the file system's structure, is a frequent and inevitable source of contention. Modern file systems usually spread their metadata around, both for robustness (multiple copies are often kept in separate locations on the disk) and to allow for better concurrency.
Practically speaking, think about those times when you run Disk Utility on an HFS+ volume and it finds (and hopefully repairs) a bunch of errors. *That's bad, okay?* +*That's something that should not happen*+ with a modern, thoroughly checksummed, always-consistent-on-disk file system unless there are hardware problems (and a ZFS storage pool can actually deal with that as well). And yet it happens all the time with HFS+ disks in Mac OS X when various bits of metadata to get corrupted or become out of date.
Apple gets by year after year, tacking new features onto HFS+ with duct tape and a prayer, but at a certain point there simply has to be a successor—whether it's ZFS, a home-grown Apple file system, or something else entirely. My fingers are crossed for Mac OS X 10.7.
If Disk Utility was reliable in mapping out weak sectors (it is not) and report/log errors. But it doesn't and I trust my data to other file systems when possible. We've come to expect and depend on 3rd party utilities and that Apple First Aid doesn't fix every possible error.
Scanning one drive for errors can take a long time. Maybe it needs to be done, maybe in the background. With 2TB drives it gets worse. Spending hours to scan for errors??? I've set TechTool Pro to concurrently scan anywhere from one to a dozen volumes at once.
An ounce of prevention, as they say, is worth a pound of cure.

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 hangs up

Running a G5 IMac with 10.5.1. Tried to repair permissions and Disk Utility hangs up at about 25% of the way through the process. Ran Disk Warrior. Still hangs up. Started up form Leopard Install and tried to repair permissions. Still hangs up. Otherwise the system seems to be running OK. Any help or thoughts would be appreciated.

Disk Warrior is NOT compatible with Leopard at this time.
I would not use my Disk Warrior.
Permissions take from 10 to 30 minutes with 10.5.1
Give it time.
It seems like it just sits there on "Less than 1 minute" but it will eventually finish.
Again, give it time.

Disk Warrior 3.0.3 on OSX 10.6.8?

I'm having major problems with my iMac (2.4 Ghz Intel Core 2 Duo/2 GB 66 MHz DDR2 SDRAM/running OSX version 10.6.8). Very, very slow to login, hangs up during normal use, slows to a crawl, etc. I did some searching on this forum and have tried some suggestions offerred to people with similar problems, such as running Disk Utility. When I ran it off the hard drive it went through the process with no real error messages (found a few "damaged files" and put them in folder named the same). Then I tried running it off my Snow Leopard install disk and got the message:
Disk Utility stopped repairing "Macintosh HD" 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.
Next on my list, before going so far as reformatting/restoring (I use Time Machine to back up my system onto a 500 GB external hard drive) I want to run Disk Warrior. Here at the office we have a very old version (3.0.3). Will it work with Snow Leopard? I popped the disk into a Mac running Lion and it had the slash through the icon, indicating that it isn't compatible. However, I popped it into my work iMac, which is running the same OS as my problem iMac at home, and it looks as though it may work.
Obviously the most recent version would be ideal but will this one at least run for me? If it will I think I'll give it a shot. If it doesn't work I'll look into getting an upgrade. Anyone know?
One other thing...never could locate the S.M.A.R.T. info in my Disk Utility. Saw that mentioned several times in posts but it doesn't appear on my version. I did download an app called SMARTReporter and ran that. All indications were that my hard drive is OK.

I'm unclear what you did after re-reading your original post. Did you do this:
Repair the Hard Drive and Permissions
Boot from your Snow Leopard 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.
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.

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

TM and Disk Warrior

The past few months I have had a problem with Time Machine getting corrupted often, but not always, when I do a restart. T M resides on a partition on an external disk. After a restart it either doesn't show up or is not mounted as shown in Disk Utility. The repair permissions and repair disk options are grayed out. Sometimes I can do a Verify Disk, but it always fails. The other partition on the disk is usually fine. Often if I run a repair permissions on the main Leopard partition on the iMac's internal drive, somewhere during the process a message appears that the T M partition is not repairable but is being made available with a read only functionality.
Disk Warrior sees the partition and will begin the repair process. After a short time a message appears in the DW window stating "speed reduced by lack of memory" The process hangs on step 5, locating directory data. I found one time that if I just let it go in background for up to 2 days, the process will finally complete, and continue on to repair the disk. T M then works fine until the next time I have to restart the iMac again. The latest repair report from DW is as follows.
• Errors, if any, in the directory structure such as tree depth, header node, map nodes, node size, node counts, node
links, indexes and more have been repaired.
• 2 iNode(s) had a link count that was repaired.
• 6 link files no longer point(s) to an original file and therefore cannot be repaired.
• 9 files had an incorrect key that was repaired.
• 1 folder had a directory entry with an incorrect flag that was repaired.
• 10 folders had an incorrect item count that was repaired.
• 29 folders had a directory entry with an incorrect custom icon flag that was repaired.
• Incorrect values in the Volume Information were repaired.
• Critical values in the Volume Information were incorrect and were repaired.
• There is no blessed System Folder, you will be asked to choose a System Folder after replacing the directory.
• 6 files could not be found.
• 9 folders could not be found.
• 11 folders will have more items.
• 1 folder will have fewer items.
• 10 files will now become accessible.
• 4 folders will now become accessible.
• 2 files had a Name that changed.
Disk Information:
Files: 2,963,472
Folders: 427,119
Free Space: 773.69 MB
Format: Mac OS Extended
Block Size: 4 K
Does anyone know what the problem might be causing T M to get corrupted, or at least how to get DW to perform the repair in a normal timeframe of just a few minutes?
Thanks

R C-R wrote:
By this, do you mean that the partition's name is the one that appears after "Name: " in the Time Machine system preference & the partition contains a root level folder named "Backups.backupdb"? Is this partition used for anything else besides TM backups?
Yes, separate partition with no other data on it.
Disk Utility's permissions verify & repair options should only be available for mounted volumes (partitions) that are viable boot volumes; IOW, that can be used as a startup disk. TM backups are not startup volumes (because among other reasons they have no root level system folders), so both of these options should always be grayed out for TM backup volumes unless there is also a separate installation of OS X on them. If you have ever seen them not grayed out, this would be abnormal.
BTW, I've been under the impression even partitions that are not bootable can be repaired. I have other partitions on other disks that have no system software that disk utility will go thru the repair process. Agreed that repair permissions is not available though.
Often if I run a repair permissions on the main Leopard partition on the iMac's internal drive, somewhere during the process a message appears that the T M partition is not repairable but is being made available with a read only functionality.
This doesn't make any sense to me. As explained above, permissions can't be repaired or verified on a normal TM volume. If you are repairing permissions on the normal startup volume on the internal drive of the iMac (or on any other startup disk), what is on the TM volume should be immaterial.
Doesn't make any sense to me either. It doesn't happen all the time, but it does happen. Maybe something else is going on in the background while the permissions repair is going on that causes this result.
A few other queries:
How/when do you power down the external drive? If you shut down the Mac, do you wait for that to complete before powering down the external?
Restart only when necessary, such as when new or update to software requires restart. Shut down only if I am having some other problem that I think might be helped by doing so. At shutdown, externals power down automatically.
Is Disk Warrior an up-to-date, Leopard compatible version?
Yes - 4.1.1
Have you (perhaps inadvertently) manually changed anything in the folders of Backups.backupdb or created aliases that might reference any of its files or folders? Any chance that something destined for the other partition on the external drive accidentally was dropped into the TM partition instead?
Not to my knowledge.
Message was edited by: glassetcher

'Invalid node structure', 'Invalid B-tree node size', Disk Warrior useless

Hi everyone, I am getting sick of this, it's the second time it's happened to me in a relatively short space of time, the first time with an Iomega external 500GB drive, this time with a 1.5TB Western Digital.
I gave the Western Digital drive two partitions, (as I did for the previous Iomega drive), one for doing backups of my MacBooks internal drive, the other for random media, mostly VIDEO_TS folders.
After going away for a couple of weeks, I returned home, plugged in the Western Digital drive via USB, the Internal backup partition showed in Finder, the other did not. Obviously I ran Disk Utility which was only able to show an error report with the usual 'Invalid node structure etc' message.
I tried running Disk Warrior 4.2 (supposedly the version which works with Snow Leopard) from the DVD, (holding down the C key after restart), and..... nothing, just the grey screen and spinning wheel showing, so I gave up on that and installed DW to the Utilities folder. Now it starts up, the corrupt drive showed up, I hit the Rebuild button in DW, things seemed to be happening, but then the Beach Ball appeared and there was a (very) long hang before I decided to Force Quit.
I am assuming that if DW can not fix the drive, it is done for, and may as well be used as a door stop.
I am prepared to buy yet another drive, but can someone please give me an idea about why this has happened to me twice now, and what I can do to prevent it from happening again?

Just erase the partition. Nothing yet suggests the drive is bad. When you got the drive did you prep it correctly? Usually bare drives are pre-formatted for Windows. You might consider doing this:
Extended Hard Drive Preparation
1. Open Disk Utility in your Utilities folder.
2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. 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 two and size them as you prefer. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, set the partition scheme to GUID 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.
Repeat Steps 4-6 for the other partition. Alternatively, you can start with a single volume. After the zero data erase you can then re-partition the drive.

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 Warrior can't find my HDD even tho I can boot successfully from HDD

I have a beloved iMac purchased in 3/08. I believe its hard drive is failing b/c sometimes when I turn it on, all goes smoothly while other times, it either won't boot up or hangs. After spending $110 on Disk Warrior, I just rebooted from the Disk Warrior disk so that it can rebuild the directory of the HDD. To my shock and dismay, Disk Warrior can't find any disk other than itself. Why in the world would it not find the HDD if I can in fact successfully boot up from the HDD and run fine (at times)? HELP!

Failing Hard Drive Sounds
How to Tell When Your Hard Drive is Going to Fail
=====================
Be prepared for hard-drive failure

STILL NEED HELP w/ Disk Warrior pleeeaaase

Have had some interesting encounters with extensions: at startup, the system was hanging up at certain extensions, resulting in my manually uninstalling Tech Tool 3 and a new trial graphics program we tried out, called Silhouette. Have also cleaned the disk drive.
However, I am still unable to use the disk drive reliably. After turning off the TWAIN extension (which cleared up the remaining startup problems), the disk drive won't open upon request after I have inserted the Disk Warrior, which I have used successfully in the past. The last time the drawer would open when I clicked on the Eject Upper Drive icon on my computer was when I inserted the Disk Warrior. When I rebooted, twice the computer failed to recognize that there was a disk in there at all, booting all the way up to the OS 9.2 desktop without even an icon showing the presence of the disk. When I hold down the "C" key while rebooting, the screen remains a blank blue color, with no sign of startup. When I let go of the "C" key, the computer boots up fine, but the Eject Upper Drive shortcut doesn't cause the drive door to open. I killed the shortcut and created another alias for the desktop, but it doesn't work either. When I try to reboot and hold down the right button on the mouse, to cause the door to open while rebooting, an icon of a disk appears, with a question mark on its face. If I release the mouse button, the computer starts up fine...but the Upper Drive won't open and I can't see any icon to indicate that I have Disk Warrior in there.
I have been at this all day...does this make sense to anyone?

Hi, Sandy -
The term 'optical drive' is a generic one - it refers to any drive which uses a laser (optical means) to read a disk. This includes a basic CD drive, a CD/DVD drive, etc.
The term 'optical drive' will not appear in System Profiler. Instead, it should appear on one of the "Internal ATA" buses as something like DVD-ROM or one of the other variants of that term. Since your G4 (MDD) has two optical drives, both should be displayed separately, but on the same Internal ATA bus.
If the drive in question is not listed, then there may well be something wrong with the drive itself, as Tom has suggested.
However, if neither of the two optical drives is listed, that would tend to indicate there is something wrong with the bus that serves both those drives - perhaps the cable has become disconnected at the main logic board, or the controller on that board may have failed.
Is there a way to force it open?
On older machines the answer would be yes - the outer drive door could be pried open, and the 'emergency Mac ejection tool' (a straightened paperclip) could be inserted into a hole on the inner face of the drive to manually eject a disk.
Not sure if the newer drives still have that hole, or if it has been relocated to the rear of the drives.
Okay - found an Apple KBase article that addresses that, complete with pictures -
http://docs.info.apple.com/article.html?artnum=88215
It appears that in some cases it is necessary to remove the drive in order to access that hole.

Disk Utility Hang

I am trying to diagnose a problem with my Time Capsule and whenever I load Disk Utility when my backup image is loaded, the program hangs and I have to force quit. I can open the image with Disk Warrior, but for some reason there is a problem opening with DU. Here is the error log (the beginning at least):
Date/Time: 2011-01-11 03:47:37 -0500
OS Version: 10.6.5 (Build 10H574)
Architecture: x86_64
Report Version: 6
Command: Disk Utility
Path: /Applications/Utilities/Disk Utility.app/Contents/MacOS/Disk Utility
Version: 11.5.2 (298.4)
Build Version: 27
Project Name: DiskUtility
Source Version: 2980400
Parent: launchd [180]
PID: 1178
Event: hang
Duration: 4.74s (sampling started after 2 seconds)
Steps: 27 (100ms sampling interval)
Pageins: 13
Pageouts: 0
Process: Disk Utility [1178]
Path: /Applications/Utilities/Disk Utility.app/Contents/MacOS/Disk Utility
UID: 501
Need anymore info?

The disk has some serious problems that Disk Utility cannot fix or get past. You need to stop using that Mac immediately and get yourself a copy of DiskWarrior to repair that drive.
Mulder
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iMac G4 700Mhz Mac OS X (10.3.9)

Disk warrior won't work – error 2153, 4200

Hi,
I have a g5 dual core 2.0g with 2 drives installed in it, lately I have not been able to use disk warrior on my primary drive. I find this confusing since disk warrior used to work fine for this drive.
Here are the problems that I'm encountering:
1) I can't boot from the disk warrior cd, my computer hangs at the 1st grey apple screen with the fan spinning at full tilt and nothing happening for at least 10 mins. Additionally, there are some odd graphics artifacts on the startup screen.
2) Once I've booted up in my secondary drive, I can't use disk warrior to repair my startup drive, I get an error message that says the disk is still in use, and give the error code 2153, 4200.
I have preformed the standard suite of permission repairs, and I'm wondering if anyone else has had this problem.
Cheers
G5 Dual 2.0g Mac OS X (10.4.3) macbook pro 2.0g

All right, I figured this on out on my own.
It appears that retrospect was running at all times regards of which internal disk I was using, so I could never unmount the volume I was trying to fix – hence the disk warrior errors 2153, 4200.
On the advice of this thread http://discussions.apple.com/thread.jspa?messageID=744865 I opened terminal and typed ] /bin/ps auxww and found two process related to retrospect running from the other volume. Once I killed these, disk warrior worked like a charm.
G5 Dual 2.0g Mac OS X (10.4.3) macbook pro 2.0g

External Hard drive "not readable", does not show up in Disk Warrior either. Help me, please!

I have a 500gb G Drive Slim that is almost brand new. I accidentally pulled the cord out when it was connected, and now when I try to open it, it says "not readable by this computer." This is what I see when I go into disc utility:
I called G Drive, and they told me to download Disk Warrior 4. I did, and this is what I see when I open it:
My hard drive doesn't show up...i'm not sure if i'm doing something wrong but I just paid $100 dollars for this and I'd really like some help. I read the manual and it wasn't helpful at all.
Please help me!

Make sure it's format is Mac OS Extended (Journeled).
To check it's format, plug in the External HDD and search Disk Utility in the spotlight. Click the External HDD and go to the Partition tab. If it isn't Mac OS Extended change it and format it.
You shouldn't need any of these external applications to use it. I have one and use it like a flash drive.

Disk Warrior hangs in 10.4.7

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