Reg:working without Keyfield in FCC node structures

Hi All,
I have a scenerio of FCC to RFC , where i need to read a Text file and want to post it to R/3 through RFC
Recordset Structure : Header,1,Item,*,Trailer,1
Is it possible to read the file without Keyfield vale ?
Please give your valuable suggestions.
Thanks & Regards,
S.K.Karthikeyan.

Thanks for the inputs folks....
According to our requirement, we have different no. of line items for each node viz. Header, Item and Trailer out of which Item occurs n number of times.
In this case, we have done the FCC using a keyField value itself.
Cheers,
Karthi

Similar Messages

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. 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 Won't boot...Invalid Node Structure

My iMac is just...screwed up. It is a 2008 intel iMac that had worked fine for the last four years until lion. Everytime there was and update or I rebooted, my Mac would freeze at some point of the login. A permission repair or just repair disk would solve the issue an everyone and a while, a restore from backup. Recently my Mac started to slow down to the point it froze for several hours and force quit would never open. I held the button and since then I have been in trouble. The repair permissions had a ton of errors but successfully repaired. But when I repaired the disk, it's hit a couple of errors but ultimately failed right after "Invalid Node Structure" that error has been consistent every time I have attempted a fix and it failed.
I tried restoring from a backup to no avail. Then I wiped the drive and installed Lion (after a convienient 5 hours download) an it booted. I tried using it but it was extremely slow, let it sit over night and came back to it frozen. I had assumed it was slow due to indexing but after 12ish hours this didn't solve the issue. I clicked the apple button and it took a while to finally show up an restarted. Fro
There is wouldn't complete the boot. Froze at the apple logo or white screen with spinning mouse. Left that for several hours and stayed there. Tried repair and same issue. "ivalid node structure" redtating aftet that it just reboots and turns off a little bit after the chime. I have tried everything I could find on different forums without any success. I tried single user mode with the fsck commands and that failed also. I downloaded lion and made a recovery flash drive from another computer. I have since installed several new installations of lion after an erase and repartition. I took it to the apple store and they installed a fresh install of lion and it worked for a day then slowed down and froze. I would like to try everything possible before claiming the hardrive dead. Any other suggestions? (
I forgot to mention I have done PRAM resets in between the events I described as well as the SCM i think reset by unplugging. I have left it unplugged for over 12 hours, also have taken out all peripherals minus keyboard and mouse.

Oh I forgot to add, don't restore from TM or reverse clone, your data might have been messed up, rather cherry pick your good files from backup.
About much would a fix/Harddrive replacement cost?
You might want to get a estimate from Apple, while inside they can clean the filters and run a check.
If it's too much for you, then there are online services
OtherWorld Computing can replace the drive in iMac's
the new 2011's have the certain Apple drive heat for iMac software, not 2009, my mistake.
http://blog.macsales.com/10146-apple-further-restricts-upgrade-options-on-new-im acs
you might find a local service, Apple reseller might do it too, save the shipping costs.

Huge problems with my MacBook: Invalid Node Structure and More!

A couple days ago I was browsing the internet, and when I closed Safari, the system froze. I couldn't even force quit out of anything, so I had to shut it off manually. When I tried to turn my computer back on the next day, I couldn't get past the Apple screen. The little wheel would keep spinning, but I could never get anywhere.
Then, I tried to boot from the Leopard DVD to possibly reinstall Leopard, hoping it would work. At first, no drives would show up to install to, but for some reason, they eventually showed up. Problem is, I don't have enough free memory to reinstall Leopard. Furthermore, I've tried to fit it on the space I have, and it says that the install failed, so I can't reinstall Leopard.
I also went to Disk Utility from the DVD and tried to repair the disk. The only option available was to Verify Disk, but when I go there, that fails, and it says "invalid node structure."
I'm not sure what happened to my computer because it seemed to come from nowhere. To sum up, I cannot log in to OS X, or even XP on a separate partition, I can't reinstall Leopard, and I can't repair the disk. I've read about how DiskWarrior might help, but I can't get in to OS X. Does anyone have any idea what happened or what I can do? I haven't backed anything up, so if I'm screwed, then so be it, I guess. Just wondering if anyone has any explanations or suggestions. Thanks.

Interesting how many people have this same issue. A friend of mine has brought me her white Macbook Intel Core 2 with Leopard and it had a folder with a question mark instead of the apple at startup. I was able to boot using the Mac Install DVD and ran Disk Utility. It said something like "Invalid Node Structure" and "Cannot Repair". Unfortunately DiskWarrior will not fix this. I tried it to no avail. I'm resigned to the fact that a new hard drive is necessary.
The HD in there is a Hitachi 120GB.
It also wouldn't let me erase the disk nor partition it. Then, one morning I woke up and it was able to erase! So I erased, then installed Tiger. It seemed to be working fine. So I rebooted from the Leopard drop-in disk and installed Leopard. Then I restarted, and BAM! back to the question mark folder. Now I'm back to where I started. Other threads
I forgot to mention that my friend had photos and music on the HD that she couldn't do without and I was able to recover that data using Data Recover II. First I had to use SuperDuper to clone my own computer onto an external drive so I could use it as a boot drive.
For now the only solution is to buy a new internal hard drive and reinstall the OS. And regularly backup!!
So I guess this issue has not really been solved, but hopefully you have warranty. Unfortunately for my friend, this happened a week after her warranty expired.
Good luck.

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.
I turned on and off the Power button many times, but I get the same error message.
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
Step by Step to fix your Mac
Most commonly used backup methods

Any advice on external hard drives and invaild node structure?

(Since I wrote a lot) The Basic summary:
What external hard drive would you recommend? How do I run/use safe mode to fix the "invalid node structure" error? Or the worst case scenario, how do I reinstall the OS?
The long version
I have an iMac PowerPC G5, OS X 10.4.11... When I last turned it on, it took 15 minutes to go through the startup process. I opened to Safari to try to find some answers but it was half working and slow. Firefox was fine.
I ran disk verify and found the invalid node structure error. I backed up some files onto DVDRs but I didn't get everything.
Going through forum threads it seems I have two options.
-One is to go into safe mode and type in commands to run disk repair repeatedly until no errors show.
-Second option is to start over and reinstall everything.
Obviously, I would like to avoid reinstalling. Can someone help me with what commands I need to type in when I start safe mode, make repairs and to get out of safe mode?
Also, before I begin to fix the error I need to finish backing up my files. Instead of dealing with CDs, I would like an external hard drive. Any recommendations?
I've read that USB is kind of slow and because I own a powerpc I can't boot from the external hard drive (via USB). I don't know if booting from the external hard drive is something I should worry about...? I found this Mercury quad that seems to cover all options but not sure if the brand is worth the price? Or is there something similar for less?
http://eshop.macsales.com/shop/firewire/1394/USB/EliteAL/400+USB2/
Thank you in advance! I hope that wasn't too long of a post...

Hi baran1, and a warm welcome to the forums!
Going through forum threads it seems I have two options.
More actually...
DiskWarrior...
http://www.alsoft.com/diskwarrior/details3.html
Drive Genius…
http://www.prosofteng.com/products/drive_genius.php
TechTool Pro…
http://www.micromat.com/index.php?option=com_content&task=view&id=31&Itemid=83
One is to go into safe mode and type in commands to run disk repair repeatedly until no errors show.
To clear up some confusion, those are two different modes, Safe Boot, (Safe Mode), from the HD, (holding Shift key down at bootup), tries to repair the HD while the Radian is going.
PS. Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive.
Single User Mode is where you would type those commands in.
To use fsck, you must run it from the command line. Unlike using your mouse to open an application to do something, you'll need to type a text command at the prompt (#) to tell fsck what to do. The Terminal application (/Applications/Utilities) and single-user mode are two examples of command-line interfaces in which you can type such commands. To use fsck:
1. Start up your computer in single-user mode to reach the command line. Hold CMD+s keys down at bootup. Note: If necessary, perform a forced restart as described in the Emergency Troubleshooting Handbook that came with your computer. On desktop computers, you can do this by pressing the reset/interrupt button (if there is one) or holding down the power button for several seconds. On portable computers, simultaneously press the Command-Control-power keys. If your portable computer doesn't restart with this method, you may need to reset the Power Manager.
2. At the command-line prompt, type /sbin/fsck -fy
(SPACE between fsck AND -fy important)
3. Press Return. fsck will go through five "phases" and then return information about your disk's use and fragmentation. Once it finishes, it'll display this message if no issue is found: 
The volume (nameofvolume) appears to be OK  If fsck found issues and has altered, repaired, or fixed anything, it will display this message: *** FILE SYSTEM WAS MODIFIED ***   Important: If this message appears, repeat the fsck command you typed in step 2 until fsck tells you that your volume appears to be OK (first-pass repairs may uncover additional issues, so this is a normal thing to do).
4. When fsck reports that your volume is OK, type reboot at the prompt and then press Return.
http://docs.info.apple.com/article.html?artnum=106214
Then Safe Boot, (holding Shift key down at bootup), & use Disk Utility from there to Repair Permissions, reboot once more.
Or is there something similar for less?
The FireWire 400 + USB 2.0 model is cheaper than the FireWire 800/400 + USB2, + eSATA 'Quad Interface' on that page.

Invalid node structure

I have a Hitachi 500GB Go usb disk and its throwing Invalid node structure errors. I tried ripping an image from this disk, after about an hour or so of data copied (approx 100GB in the dmg) it will just close out and delete the .dmg, no errors, no nothing!
Disk warrior and Disk Utility fail to repair the disk/directory.
What's next for low-level access to this disk without having to buy expensive recovery software?
Also, it happens on both mine and my client's MacBook Pros'

Self-resolved:
Fixed by booting into bootcamp Windows 7 (ironic right?) It seems to ignore this HFS error...
Just so you know, the Windows app Recuva + Bootcamp will in fact give you a last-ditch chance to recover your data from a corrupted HFS disk like this one.

I got the dreaded "Invalid Node Structure" Error

Hi All,
I entered the Mac world recently with a spanking new Macbook Pro 15". Updated it online to the latest OS 10.6.4 Snow Leopard.
Today I was trying to install some more free application from the Official Mac Software Site. After installing a couple of softwares, I popped in the included recovery Disk and tryed installing xcode from the 'additional software' folder on the disk. But this failed
After this I thought of restarting the mac and try again. However, the **** thing now wouldn't boot anymore. Just stays on the Gray apple screen with the small ring rotating below it for ever.
Then I tried repairing it using the Disk Utility booting form the DVD. On verify Disk, it shows 'Invalid Node Structure'. So I clicked 'Repair Disk', And it just stayed there for ever without any progress. So I stopped it. And after trying the above 3-4 times, I Hard rebooted the system, and this time entered the console mode (Command + s).
Entered the command fsck_hfs -rf /dev/disk0s2 (disk0s2 is what Disk Utility showed me).
The output of this command shows:
** /dev/rdisk0s2
Executing fsck_hfs (version diskdev_cmds-491.0.2~7).
** Checking Journaled HFS Plus Volume
** Checking extents overflow file
** Checking catalog file
** Rebuilding catalog B-tree
disk0s2: I/O error.
disk0s2: I/O error.
disk0s2: I/O error.
disk0s2: I/O error.
disk0s2: I/O error.
disk0s2: I/O error.
disk0s2: I/O error.
disk0s2: I/O error.
disk0s2: I/O error.
disk0s2: I/O error.
And this goes on and on and on.... :((
Now what to do???

Hmmm, yeah that could be the last option, but I can't format the disk right now, 'cause I've some extremely important (not-yet-backed-up) files in it
So I'd like to try out all possible ways to recover the system before even thinking of a format!
BTW, the above fsck_hfs command I ran was by booting from the DVD itself.

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.

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 on SSD

so i got a vertex 2, 120gb ssd drive a couple of weeks ago, but suddenly my computer crashes hard, my cpu turns out 89c (about 180F) in temp and "quickload D" uses up most of the cpu power. i force quit everything and DMG files just get some error i cant remember now. so i try restart right. but i just get the apple logo and some gray bar at the bottom that goes maybe 10% of the way and then it just shuts off. tried to boot a couple of times but nothing.
so then i boot from the snow leopard disc and run diskutl. and find "Invalid Node Structure" thats not reparable when verifying the disk. so now i have to reinstall. because i haven't come around to getting a system backup yet.
this goes without a hitch and the macbook is just fine now. no invalid node when running verification.
after scouring through OCZs forums i find this to be a reoccurring theme, but mostly on the vertex(1), and that not letting the computer go into hibernation will/might solve this.
so my long winded question is this. anybody else have this happen to them? have you fixed it? and what kind of SSD do you have?

Is your computer still under warranty? If so you might want to bring it to a genius bar. http://www.apple.com/retail/geniusbar/

I have an error of invalid node structure

I have an error of invalid node structure. Can I save my data from my hard drive? Is it even fixable?

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

Recurring "Invalid Node Structure error"

Hello all,
Starting a new thread with this one....
Have done 5 complete re-partitions, clean SL installs and back ups from TM in the last four days. DU disk checks out fine after re-install, DU comes up clean.
After a few hours, the hanging beach ball returns, I run DU and get the "Invalid Node Structure" error message.
This in on the iMac that is 42 days out of Apple care......
Ran techTool after the last install, and it comes up clean....
What's the soultion? Nuke the drive and get a new on on my dime?
I've repartitioned, zeroed out the data and sit here with a naked drive, I really don't want to spend another day loading it up if it's shot....
The TM files and drive I'm backing up from check out fine.
Thanks,
Mark

Took 3+ hours. Came up clean. I have not restored from TM yet. Did the SL updates ect.
Repaired permissions, ran DU it comes up clean.
I will do some net surfing tonight (that's all I did this morning) still without loading the back up data, and we'll see if I get the beachball of death.
I will run another surface scan when I hit the hay, and see what it says in the morning.
If that is clean, I will restore the back up data, and run the surface scan again.
One step at a time until I can recreate (or not) the failure mode.
Tedious, but I have to get to the bottom of this. I don't want to load any of the TM back up on to the Mac Air until I'm sure it's not a software issue.
Mark

Invalid Node Structure error

Hi All,
I need some information on how I might solve a problem. I ran my Disk Utility earlier today to verify the HD on my MacBook Pro because my computer just seemed a bit off. It froze the other night when I shut it down.
Here is the message I received:
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
1HFS volume checked
Volume needs repair
I booted the computer from the original OS X Install Disc and tried to repair the hard drive, which didn't work. That's when I started reading the Tiger Forum. I have since discovered that this error cannot be repaired from the Install Disc and probably will require an erase and re-install. However, I did read about a 'fsck' command.
I would like to give this a try, but am not at all comfortable with running commands. Would someone be willing to walk me through this and/or offer any other suggestion for fixing this?
Thanks

Michelle,
Sounds like you are really learning a lot in a hurry. That's good. I can't tell you how long it will be before your system "acts up." I would take this opportunity to backup any really important data to DVD/CDs while you are in the process of getting an external drive and Disk Warrior.
Good question about whether your file system error will be copied to you external drive when you clone with SuperDuper or Carbon Copy Cloner. I don't know exactly but it will certainly be better to have a backup that may be slightly imperfect than to have no backup at all. Of course, after you fix the error on your internal drive with Disk Warrior, then you will reclone your repaired system to your external.
Regards,
Steve M.

Reg:working without Keyfield in FCC node structures

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