HELP! "Invalid node structure"

what does this error mean?
i booted from the install dvd and ran disk utility
them clicked Repair Disk
it doesn't complete because of the error "Invalid node structure"
Bootcamp won't partition my drive because the verification fails
PLEASE HELP!

no, now i have a really strange problem
i've managed to successfully image my whole hard drive onto an external FW disk
i did this by booting from the osx install dvd and opening disc utility from the utilities menu
but before i wiped by drive i (thankfully!) tested the restore fuction
i can choose a source but i can't choose a destination
it says to drag the destination disc into the box
but when i try this, all my mouse does is selects the discs i drag on/over in the left hand panel of disc manager
it doesn't pull them out of the panel so i can drag them into the input field
it doesn't do this when i boot up normally and run disk utility off the hard drive
very strange
i think i'll wait until leopard comes out and do a wipe and full reinstall of all my software then - no big fan of upgrading, better to wipe and reinstall afresh
until then, i'll have to use a pc to run windows!

Similar Messages

  • Kernel panic/invalid node structure; please help retrieving my files!!

    Hi everyone, thank you for your time in advance... if anyone has ideas about how to solve it, I appreciate this very much!
    OK, here is how it began: while I was working on the airplane using PowerPoint, the gray spinning wheel appeared after which PowerPoint stopped working. I pressed the power button to exit (all applications froze). (So much for trying to get more work done...)
    Next, I powered up the computer but it would not boot up, with only gray spinning wheel showing.
    Next, tried to boot up while pressing power button and holding shift key. After some time (10 minutes), an error message appears. Researching it on discussion forums, I found that it is called “kernel panic”. Here is beginning of the message:
    panic(cpu 1 caller 0x47f5ad): "Process 1 exec of /sbin/launchd failed, errno 8\n"@SourceCache/xnu/xnu-1504.15.3/bsd/kern/kern_exec.c:3145
    Debugger called: <panic>
    [additional information here]
    Also, message “You need to restart your computer. Hold down the Power button until it turns off, then press the Power button again” is shown transparently in the middle of the screen over the “panic” message output.
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    I also tried Apple Hardware Test but it did not work (it did not generate any messages).
    Next, I tried to use the Disk Utility using the Installation Disk that came with the computer. After I clicked “Disk Repair”, here is the log:
    Verify and Repair volume “Macintosh HD”
    Checking Journaled HFS Plus volume.
    Checking extents overflow file.
    Checking catalog file.
    Invalid node structure
    Rebuilding catalog B-tree.
    Invalid node structure
    [many repeats of “Invalid node structure”  ~ about 400 repeats]
    Rechecking volume.
    Checking Journaled JFS Plus volume.
    Checking extents overflow file.
    Checking catalog file.
    Missing thread record (id=18)
    Missing thread record (id=110)
    [many instances of “Missing thread record” ~about 200 repeats]
    Checking multi-linked files.
    Checking catalog hierarchy.
    Checking extended attributes file.
    The volume Macintosh HD could not be verified completely.
    Error: Disk Utility can’t repair this disk…disk, and restore your back-up files.
    At the end, a window presented over the error log stated :
    “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 back-up files.
    I need to retrieve my recent files!! Please Help!! Argh!! I promise that I will promptly back up my files now! I did not use Time Machine, and only some of my files are backed up.
    From what I read on the discussion forum, I will probably need to erase the disk and then do a fresh installation, but could someone please guide me with regard to how to back up the data / retrieve the files? I may have access to another mac so I’m thinking that the FireWire Target Disk Mode may work. I also have spare external harddrive (formatted for mac) (not partitioned). Also, how do I retrieve the files from the other computer if the FireWire transfer works?
    Also, the second step is to do a new installation, but is there any reason why “Archive and Install” using Disk Utility won’t help? I have some additional programs installed (Illustrator, Photoshop) so this means if I do a new installation, I will need to re-install those as well?
    I did some investigation, and it looks like this problem is similar to this:
    https://discussions.apple.com/message/18098343#18098343
    But my main issue now is to retrieve the files!
    Also, how do I investigate whether this problem is due to a failing hard drive or a natural file system corruption ? (so should I get a new harddrive or do a new install).
    http://forums.macnn.com/t/459376/heart-attack-invalid-node-structure
    I don’t know what is the OS version;  it is Snow Leopard OS X ……. I bought it in September 2009.
    I appreciate any help, thank you so much for your time…

    Create a data recovery/undelete external boot drive
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  • Please help! Invalid node structure and invalid record count

    My MacBook Pro is about 6.5 years old. I upgraded to Snow Leopard 2 years ago and added RAM at the same time. My first problem ever occurred three days ago when my computer got super sluggish, I restarted and got the gray screen with apple and spinning wheel...no boot up. I ran disk utility from the snow leopard install disk and found "invalid node structure" and "invalid record count". After reading on here what to do...try to repair the disk and so on with no success I went out and bought Disk Warrior. Got home expecting to fix everything and Disc Warrior won't boot...I just get a file with a question mark and the disc is ejected. I tried erasing the hard drive but was only able to use the "don't erase data" option. Then I tried to reinstall Snow Leopard with no luck. Now I am stuck. Any ideas? 
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    PLEASE HELP!

    When you contact Alsoft, make sure you let them know that you are using Snow Leopard (10.6.8).
    Try the following in the meantime -
    Disconnect all peripherals from your computer.
    Boot from your install disc & run Repair Disk from the utility menu. To use the Install Mac OS X disc, insert the disc, and restart your computer while holding down the C key as it starts up.
    Select your language.
    Once on the desktop, select Utility in the menu bar.
    Select Disk Utility.
    Select the disk or volume in the list of disks and volumes, and then click First Aid.
    Click Repair Disk.
    Restart your computer when done.
    Repair permissions after you reach the desktop-http://support.apple.com/kb/HT2963 and restart your computer.
    Try DiskWarrarior again if it's combatible with the os system.
    YOu cannot reformat until you get your issue corrected.

  • Invalid node structure error when verifying hard disk, please help

    My 27" Mid 2011 iMac is having hard disk issues. I attempted to repair the disk but received an error that said the disk cannot be repaired and needs to be re-formatted. I have all my files backed up to an external hard drive so I erased and formatted the disk. After reformatting, I ran the verify disk function and got the message saying the HD appears to working properly. I reload OSX Lion and within a day, my computer freezes up and acts as if something is wrong. When I run the verify disk, I get the Invalid Node Structure error multiple times and then the message saying the disk cannot be repaired and I need to reformat the drive. I have completed this process several times and have had no luck. I have looked at a few forums with people who have had somewhat similar problems but am still unsure. I have seen people recommend programs like Disk Warrior to repair issues the hard disk utility cannot but I don't want to spend $100 dollars on this program if my hard disk is damaged and needs to be replaced. Any suggestions? Thank you

    Make a "Genius" appointment at an Apple Store, or go to another authorized service provider.
    Back up all data on the internal drive(s) before you hand over your computer to anyone. There are ways to back up a computer that isn't fully functional — ask if you need guidance.

  • Power Mac G4 - invalid node structure

    I am hoping someone can help me. I have a Power Mac G4 - 933....we had a power outage and the Mac would not turn on...the power light lit up when pressed but the computer wouldn't boot...I reset the PRAM and all was good...except a file I had was corrupted and couldn't be opened....after that, a month later, another power outage. This time I had more trouble as resetting the PRAM didn';t work...I reset the logic board (taking out the battery for 30 minutes then replacing) and that didn't work either...I tried several combinations of the above to no avail...I finally took out the battery for over and hour, powered up the computer without the battery and it started...so the battery was corrupted.    I replaced the battery (correct one of 3.6 volts) and the computer fired right up. I ran disk utilities to see if all was okay. Checking preferences was fine but when I tried to verify, Disk Utilities came up with the message that it could not complete verifying and that it found "Invalid node structure" and that it could not repair the disk.   I then tried fsck to repair and to no avail...fsck gave me several messages depending on the repair options I tried including one that included that the problem was in "memory 4, 23412"....it said it could also not repair due to "os/10 i/o error" and the second run I took at it with a different method told me there was a problem with  "DIMM 2/J23 memory"...Apple's website says that if I get an uprepairable message from disk utility that I should back-up, erase and do a clean install...but with these messages indicating the problem is in the memory, since the battery runs the memory, could it be in there instead? ...of important note, I do not have the original install disk...the operating system running it is Tiger 10.4.11...I don't have the orignal disk and I have an empty 10.5 Leopard disk box with no idea where the disk is...I have snow leopard, but that cannot be installed on the G4....after running the last fsck attempt, the computer shut down and is back to only having the power light lit when pressed but no computer booting...where should I start/what do I do? I am hoping you all have good suggestions for me because some of my files were bnot backed up (I know...don't judge) and I got them onto a flashdrive right before the computer went down again, but I have no idea if they took,...further, I love this old dinosaur...

    Hi, only thing I've seen repair that is DiskWarrior, you'd need an older version...
    http://supportdb.alsoft.com:591/FMPro?-db=alsoftsupport&-lay=main&-max=15&-forma t=AlsoftSupport-qa.html&-script=counter&-token=177&-Skip=96&-find
    But it does sound like you have some bad RAM, but have you blown the dust out yet & tried reseating the RAM?

  • Invalid Node Structure on Time Capsule.

    Hi,
    I was using my time capsule (7 months old) as a temporary network drive (Until I get a new network drive) for my iTunes library. And, no, currently this is my only computer without a time machine backup. One day last week, I was listening to some music and I tried to add a video to my library. It locked up and my time capsule stopped responding. Upon restart of the device, the drive wouldn't show up int he finder.
    After a call to apple support (who were most gracious even though it was out of warranty), I still couldn't mount that partition. I had about 500gb of stuff on the drive (including my 300gb iTunes library) and was eager to retrieve it. I resorted to removing the drive from the time capsule and put it in a USB case. I plugged it into my mac and low and behold the drive showed up in the finder and disk utility.... except the partition with my data.
    From what I understand disk1s3 is the standard partition for the data on a time capsule. It shows up in disk utility, but fails to mount and is grayed out. When I try and repair it, I get an error stating "invalid node structure".
    After searching the internet for days, I found a site that had some terminal commands that should fix it, but it didn't.
    I even tried diskwarrior and after DVD boot, even it wouldn't see that partition. The other two on the disk are fine and dandy.
    Now, I'm stuck with a $300 brick and no data.
    I don't have the money to do a professional data recovery.
    Any help would be greatly appreciated.
    Thanks,
    Brian

    You have exhausted all the options you can at user level.. basically if the tools like disk warrior cannot recover it, then it has to go to professional disk recovery people.. who use different methods. And may still not get back data in the form you want  it.
    This is precisely why we tell everyone do not use TC for network storage. It is not suitable.

  • Invalid node structure and Boot Camp 1.1.2

    I downloaded Boot Camp 1.1.2 and during the installation of Mac Drivers I kept getting dialog boxes that the software i'm installing did not pass Windows Logo testing- I just ignored it.
    After that Windows XP didn't recognise my keyboard, airport, ...
    I prepared a new instalation with Boot Camp Assistant and i had an error message when the disk partition was processing.
    I run Disk Utility from my Mac OS X install disk DVD and I got the following:
    Verifying volume “Macintosh HD”
    Checking HFS Plus volume.
    Checking Extents Overflow file.
    Checking Catalog file.
    Invalid node structure
    The volume Macintosh HD needs to be repaired.
    Error: The underlying task reported failure on exit
    1 HFS volume checked
    Volume needs repair
    Please give me some help to repair my disk and to understand what happened.
    MacBook Pro 2 GHz   Mac OS X (10.4.8)  

    If you are unable to repair the drive you will need to repartition and reformat the drive.
    I recommend a cloned backup to an external FW drive. You can use this procedure:
    How to Clone Using Restore Option of Disk Utility
    1. Select the destination drive on the Desktop and press COMMAND-I to open the Get Info window. At the bottom in the Ownership and Permissions section be sure the box labeled "Ignore Permissions on this Volume" is unchecked. Set Ownership and Permissions as follows: Owner=system with read/write; Group=admin with read/write; Other with read-only.
    2. Open Disk Utility from the Utilities folder.
    3. Select the backup or destination volume from the left side list.
    4. Click on the Erase tab in the DU main window. Set the format type to Mac OS Extended (journaled, if available) and click on the Erase button.
    5. Click on the Restore tab in the DU main window.
    6. Select the backup or destination volume from the left side list and drag it to the Destination entry field.
    7. Select the startup or source volume from the left side list and drag it to the Source entry field.
    8. Double-check you got it right, then click on the Restore button.
    For added precaution you can boot into safe mode before doing the clone.
    You will only have to reinstall your third-party applications. All standard OS X applications will be reinstalled except for bundled applications such as iMovie, iDVD, Garageband, etc. These can be reinstalled using the Bundled Applications installer on the OS X Installer Disc.
    If you make a cloned backup all your data will be on the backup. You can restore it afterwards by copying the folders to their respective locations on the startup volume.

  • Invalid node structure. Free solution!

    Invalid node structure. Free solution! Jan 2007.
    Disk problem on an Intel Core Duo Macbook with 1.25 gig RAM and updated to OS X Tiger 10.4.8
    Background.
    About a month ago I ran into a problem with expose behaving oddly and after posting a question on this forum, the very helpful Dr Smoke advised me to clear my caches and to run 'repair disk.' from the installation CD. (This because I reported that a couple of times I had to do a hard reset.) I got expose fixed but discovered that my disk had serious errors in the directory structure, reported as "invalid node structure," and which Disk Utility could not repair. The laptop was running perfectly but several people posted advice that I should not leave this problem unattended to. Reporting this crisis again on the forum I was advised to buy Disk Warrior for a whopping $100 for what might be a once in a lifetime problem -or else I should back up my data and re-install everything. And I thought the Mac was more stable!! Up to 6 months ago I was a Windows user who often had such problems with the FAT but I was always able to cure them with Checkdisk or Scandisk. In fact MS Windows repaired it automatically after a hard reset. I feel that it is most unfair for Apple to not provide an effective utility to correct this kind of disk corruption. They bundle wonderful programs like iPhoto and iWeb but leave you in the lurch with a fundamental disk problem. With help again from Dr Smoke, I made my firewire disk bootable for Intel Macbooks (must be partitioned with the "GUID" option selected) and searched the forums for a way to get going again without forking out $100. I wouldn't mind if it was a program that did other useful jobs like on-the-fly partitioning but it was going to be an overkill for me. Learning a little from each of several other posts (sorry I didn't record the links) I put together the following solution which is easy to execute and the time consuming elements can be left to run at night or when away from the computer. You may see possible short cuts as you read through to make it even simpler, but here is my full story! Actually I was travelling around Eastern Europe and couldn't easily get disk Warrior or Tech Tools sent to me. I needed to find a solution from reading advice and downloading disk utilities off the Web.
    I have a 40 gig ext. disk, mounted in a "hotdrive" enclosure which is useable either as firewire or USB 2. http://www.byteccusa.com.
    My Bacbook disk is 60 gig but only 25 gig was in use.
    My Macbook was up todate with every part of OS X including the firmware. except for Garage band which I do not use.
    Step 1a. I downloaded 2 free disk cloning programs - Carbon Copy Clone and SuperDuper. I preferred the latter. Step 1b I read about Migration Assistant - part of OS X Tiger.
    Step 2. I partitioned the Firewire disk in two (32 and 8 gig) for future convenience, and zeroed the disk after Dr Smoke's advice.
    Step 3. I installed the basic OS X package onto my 8 gig "Firewire 2" using only Install (DVD) disk 1 which takes up less than 5 gig. (In Setup one chooses to not install the additional programs - iPhoto etc.) I checked that I could boot from it and that it was healthy by running "verify disk" when booted from the internal hdd.
    Step 4. While booted from my internal HD, I cloned Firewire 2 onto Firewire 1 (32 gig) I verified the disk (no problems) then booted from it and assured myself that I had a fully working copy of OS X.
    Step 5. I booted from firewire 1 and used Migration Assistant to import EVERYTHING - files, programs, the lot, from my internal HDD with the node structure problem. My firewire disk was now 25 gig the same as my internal HD. It had now two users, both shown as administrators. I booted to my newly-imported user ID - the original one that was on my internal HDD. The only problem reported by Migration Assistant was that Missing Synch for Palm might need to be re-installed which would not be surprising given what it does. Later when all was done, I discovered that the migrated programs had been placed in a folder on my desktop so I opened it and moved them all into the 'normal' Applications folder created by my new basic install. (Some programs don't like running from anywhere other than the Applications folder.)
    Step 6. I worked from Firewire disk 1 for a day, trying out every program and it was working normally. One thing I noticed was that iTunes seemed to import as the original tiger 10.4.6 version so I needed to install the update to 7.02 which I had kept in my download folder. I tried to install the OS X update to 10.4.8 but a dialog informed me that I could not do that on this (external) disk. I don't know why, but later on I updated to 10.4.8 overnight using Mac Update.
    Step 7. Make sure all your data has been backed up somewhere, and that there is nothing of value on your internal disk. Take a deep breath, and wipe it!! I did this using Disk Utility (from Firewire 1) and took the chance to partition my HD into 32, 18 and 6 gig. I chose GUID partitioning and zeroed the disk. No going back!
    Step 8. I booted into Firewire 2 and installed SuperDuper. Then, from Firewire 2, I cloned Firewire 1 onto my internal HD 1 partition of 32 gig. SuperDuper does not call it cloning but rather 'copying all files.' It booted and works fine (as of Jan 10). Then I verified the disk when booted from one of the firewire partitions and all was well. Phew!
    I ran sofware Update and it offered to update Java, OS X for Intel, Garageband and Quicktime.
    So my node structure is cured and my internal hdd is partitioned without spending a penny and without having to re-install my programs one by one.
    Note: There may be a few things to re-install or some prefs to reset but in general this method worked well. I mentioned having ro re-update iTunes.I also had to reset the Quicksilver prefs, and maybe I will yet come across something needing to tweaked again. (QS is a free launcher.) Oh yes, FireFox did not run well so I re-installed it.
    I share this in appreciation for the help of Dr Smoke and others who answered my questions and for those whose posts were helpful to read, and for the benefit of others who may find them selves in the same predicament as me. And, oh yes, the trouble was not enough to cause me to go back to that other OS! Louis J
    macbook Intel 13" Mac OS X (10.4.8) 2 Ghz model with 1.25 gig RAM

    Invalid Node Structure is not a hardware failure, it never was (you may still have a hardware failure, but the Invalid Node error is not indicative of this problem. 
    Still, Disk utility will certainly fail to fix it, and DiskWarrior will probably fail too.  
    But don't despair.  Try this, and don't give up till you've tried it at least three times.
    First, get the name of the partition of the failing volume.   You can get it most easily by finding your disk in Disk Utility, selecting your partition (not the drive) and type cmd-i.    Look for "Disk Identifier" right at the top.
    Then,  open up Terminal, and type this:
    sudo /sbin/fsck_hfs -yprd /dev/disk5s2 
    substituting your disk identifier for the one already here.   Keep the "/dev/" part.   Enter your password, and wait.  It may take a while.  I have had this fail several times before finally working so its important to keep trying.   It's faster than a reformat!!!
    If the afflicted disk is your startup disk, you will need to do this in recovery mode: restart the computer, hold down option, and wait for the disk options to appear.   Select that, then proceed to Disk Utility and then Terminal as described above.  
    Good luck, and always keep a backup!
    chris watts

  • IMac (March 2009) - Invalid Node Structure problem

    Hi All
    I was using my iMac as normal yesterday, when suddenly the system ground to a halt (something I never seen since using OS X). As I had work to do, after about an hour, I restarted, expecting it to be an app misbehaving or something straight forward, but on restart the same thing happened almost straight away.
    So, I restarted again, only for the iMac to get stuck on the blue screen which follows the grey 'cog' screen. After looking through these discussions, and some other Mac forums, I booted from the installer disk, tried to run Disk Utility, which found issues and couldn't repair the disk.
    I then tried Safe-User mode and fsck, which reported the aforementioned Invalid Node Structure problem. After checking a few more forums, I thought I would try to Erase the disk and reinstall Mac OS. I restored from my Time Machine backup, and finally got it to start, but the system moved at a snail's pace, and wouldn't open any apps or files.
    I've tried again with fsck, and also fsck_hfs -r /dev/disk0s2 but all I get is the same error message:
    disk0s2: I/O error.
    Invalid Node Structure
    (4, 38403)
    ** Volume check failed.
    /dev/rdisk0s2 (hfs) EXITED WITH SIGNAL 8
    So, does anyone know if there is anything I can do to save the iMac? Or does it need a new HD? It is my primary work computer, so I really need to get it back, and after buying it in the UK, am now in France for 6 weeks, so it's difficult for me to take it to an Apple specialist.
    Any help would be greatly appreciated, thanks in advance,
    Daniel

    As the last user stated, Disk Warrior maybe able to correct it, however if you search the net, you will see there are more than one user with this problem. I had the same problem, however, my machine is out of warranty, It started like you are saying, I RAN disk warrior which corrected the problem long enough to boot the system. In a matter of 10 minutes or so, the system started pausing (apps hung, but in a matter of seconds recovered). I was checking the disk with fsck_hfs and fsck while booted from a USB drive with a maintenance install of 10.5.6. After running fsck the 5th time with different options suggested from the internet, I rebooted with my disk warrior DVD only to find the drive NOT mounted, Drive utility see's it (even can attempt to run disk repair, but it locks up the system when trying this). Disk Warrior doesn't even see the disk to run a directory repair, although in the "check s.m.a.r.t status it sees it as a sata device, and SAYS ITS NORMAL).
    Since my iMac was out of warranty, I followed the online instructions to replace the hard drive (not too difficult) and everything is fine now.
    The old drive still wont mount, but another utility I bought (data rescue II) has been able to quick scan it and access all the data, even though it wont clear a fsck fsck_hfs or disk warrior, anyways, get it back while you can, IT IS THE hard drive itself, and lots of other iMac users online with the same issue (can you say WHY is my iMac SOOO HOT on the apple in the back (right where the drive is and not sufficient cooling in my opinion, but hey, some people might want to lay their computers face down and fry eggs on the it or something... ))
    -SD

  • Invalid Node Structure, Mac Not Starting

    *THE PROBLEM*
    My MacBook does not start. All I see when I press the power button is a gray screen with an apple logo and a spinning wheel.
    *WHAT CAUSED THE PROBLEM*
    I changed the input languages settings in international in system preferences to “Devnagari-QWERTY”. Then I typed my name in 'Devnagari' in Textedit and copied it. I created a new folder on desktop and pasted my name copied earlier. It worked. So I went ahead and tried renaming my startup disk (Macintosh Disk) in the same manner. I clicked on its icon, hit enter and command+v. Immediately my mac froze. Noting happened. Even commandoptionesc did not work. After a long time I pressed the power button for 5 sec and tried a restart. Now it won't start.
    *SOLUTIONS I TRIED*
    1. *Safe Boot (shift while startup):* No result, all I get is a gray screen, an apple logo and a spinning wheel appears after a minute and its stuck there.
    2. *Tried Single User mode (command+s):* Computer does not start and is stuck with the following text.
    Probe booting in single user .. do not match
    disk0s2: 0xe003005 (UNDEFINED)
    Load of /sbin/launchd, errno 85, trying /sbin/mach_init
    disk0s2: 0xe003005 (UNDEFINED)
    Load of /sbin/launchd failed, errno 85
    3. *Tried Verbose mode (command+v):* Computer does not start and is stuck with the following text.
    disk0s2: 0xe003005 (UNDEFINED)
    Load of /sbin/launchd, errno 85, trying /sbin/mach_init
    disk0s2: 0xe003005 (UNDEFINED)
    Load of /sbin/launchd failed, errno 85
    4. *Disk Utility from OS X Install disk:* Tried using repair disk. But it does not work either. All it says is
    Verify and Repair disk “Macintosh Disk”
    Checking HFS Plus Volume
    Checking Extents Overflow file
    Checking Catalog file
    “Invalid Node structure”
    Volume Check failed
    Error: The underlying task reported failure on exit.
    1 HFS Volume Checked
    1 Volume could not be repaired because of an error.
    *5. Reinstalling OS X from install disk:* I tried this as a final resort.
    a) The normal install did not work because my startup disk had OS X 10.4.11 and my install disk had 10.4.6, so it gave an error that I have a “newer version installed”.
    b) I can not do an archive and install because I have only 4 GB free space and it requires at least 15GB.
    c) I do not want to do erase and install because I do not want to loose my data.
    *MY MACBOOK*
    1. I have a first generation MacBook, Intel Core Duo 1.83 with 512 MB Ram and 60 GB HDD with Mac OS X 10.4.11.
    2. S.M.A.R.T status of the disk is verified
    3. I can browse my files on the disk if I click on new disk image in Disk Utility from Install Disk.
    4. There is no problem in mounting the disk.
    LIMITATIONS
    1. I am not at my university so I do not have any other external HDD or any other Mac for a “Target Disk Mode” for data backup.
    2. All I have is my Mac and 10.4.6 install disk.
    3. No broadband so can not download large files.
    4. I can not loose my data.
    Is there any way of fixing the Mac, given the limitations given above. Something using command line, or anything that will make it work again. How do I fix the invalid node structure. I really do not want to loose my data and I am in transit so I really need my Mac to work.
    Any help would be appreciated.

    Ambarish:
    The article Disk Utility reports "Underlying task reported failure" when repairing a volume gives more information about the issue you are experiencing. The reference in the article to a third party utility is the utility referenced by BGreg, Disk Warrior.
    Please do post back with further questions or comments.
    Good luck.
    cornelius

  • Problem when booting - Invalid Node Structure

    Hey!
    I decided to put my MacBook G4 up to date. So I installed several updates of my software. So far so good. Then I tried to check with Disk Utility wether there were any problems on the file system. I ran "repair Disk Permissions" and some errors where found and corrected. I tried "Verify Disk" and it announced there where some errors namely "Invalid Node Structure". As I couldn't repair the disk as it was the current boot disk I decided to run Disk Utility from a CD. Unfortunately I didn't have my original cd so I asked a friend to use his. He gave me his "MacBook Pro - Mac OS X Install Disc"s (Mac OS X 10.5) and I ran it on my PowerBook G4 (Mac OS X 10.4 installed). It gave the same result like when I ran it from my hard drive. When I tried to repair it, it started and stopped after some seconds (between 20 and 40 seconds) saying it was unable to repair it.
    After that the computer does not mount from hard drive (10.4 installed) anymore, only from cd. I tried booting in single user mode and executing /sbin/fsck -fy but I had the same result ("disk0s10: I/O error. Invalid node structure (4, 7698) **Volume check failed.").
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    Hi Ja!, and a warm welcome to the forums!
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  • Recurring Invalid Node Structure

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    Rod

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    John Nightingale1 wrote:
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