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#1
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ALL DATA LOST ???? HELP "bad links in lost chain at cluster"
Hi,
I am running WinXP on an nforce AMD XP1700 system. I am using it as a storage computer. I have 3 harddrives - a small 40gb with the OS and two others (80gb and 250gb). The 80gb was almost full (under 500mb left) and the 250gb drive had 150gb of files on it. For some DUMB reason i decided to copy all the files from the 80gb drive to the 160gb. It said that it would take about 130minutes. When I came back 4 hours later, the computer had locked up (trying to copy the same file over and over - had copied about 80% of the files). I could not stop the process - only option was to reboot. When I rebooted, scandisk took over. For the last 2 days I have a scrolling message on the screen that says "bad links in lost chain at cluster ********* corrected" (last check is was at 4,900,000 and counting). Sometimes there is a line where the word "truncated???) is at the end of it. I had read a couple of places on the web that mentioned that 160gb harddrives had either 4.1mb of clusters (can't be true since I am at 4.9mb) or 41mb of clusters (which means the computer has another 37mb more to go - or another 18 days - YUCHHHHH). If I were to stop the process, would the only files lost be the ones that I was trying to copy from one drive to another? Would the files that are on the 80gb be OK? Would the files that were on the 250gb drive originally (100gb) be OK? Would the only ones that would be toast be the ones that were to be copied? Would they be converted to chk files? HELP HELP HELP!!!!! spk |
#2
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"lionking_x" wrote in message
Hi, I am running WinXP on an nforce AMD XP1700 system. I am using it as a storage computer. I have 3 harddrives - a small 40gb with the OS and two others (80gb and 250gb). The 80gb was almost full (under 500mb left) and the 250gb drive had 150gb of files on it. For some DUMB reason i decided to copy all the files from the 80gb drive to the 160gb. It said that it would take about 130minutes. When I came back 4 hours later, the computer had locked up (trying to copy the same file over and over - had copied about 80% of the files). I could not stop the process - only option was to reboot. When I rebooted, scandisk took over. For the last 2 days I have a scrolling message on the screen that says "bad links in lost chain at cluster ********* corrected" (last check is was at 4,900,000 and counting). Sometimes there is a line where the word "truncated???) is at the end of it. I had read a couple of places on the web that mentioned that 160gb harddrives had either 4.1mb of clusters (can't be true since I am at 4.9mb) or 41mb of clusters Obviously clueless places when they measure clusters in millibits. (which means the computer has another 37mb more to go - or another 18 days - YUCHHHHH). 160 GB is (roughly) 40 million clusters at 4kB a cluster or 4 million clusters at 40kB a cluster. I don't think a 40kB cluster is possible. So find out your cluster size and you know where scandisk is at the moment. If I were to stop the process, would the only files lost be the ones that I was trying to copy from one drive to another? No. Would the files that are on the 80gb be OK? Probably, you tell us. What drive is scandisk running on? Would the files that were on the 250gb drive originally (100gb) be OK? Assuming a 4kB cluster size, probably not. Would the only ones that would be toast be the ones that were to be copied? Probably not. Sounds like you may have the 137GB limit trashing your drive. Would they be converted to chk files? HELP HELP HELP!!!!! spk |
#3
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I've just encountered this very problem, so will recount what happened
in case it's of any use to others. It's too late for me unfortunately: My PC has a 13GB Win2k C: Drive and a 160GB Seagate D: Drive for storing my music collection. No previous signs of problems with the 160GB drive, but on a boot up W2k invoked scandisk (I think) which then started checking the drive automatically (it gives 10 seconds to cancel) and showed the infamous "bad links in lost chain at cluster" messages. I missed the chance to cancel, and unfortunately decided to let it finish. My PC is 1.1GHz, and the procedure took 29 hours. It reported checking 4,882,818 clusters. That means a cluster size of 32k I believe. When the procedure had finished I checked my D: Drive in windows and saw ALL my music files had been changed to 32k files. Curiously a 'lost files' (or similarly named) folder had been created, containing exactly 10,000 32k files which totalled about 350MB. These were lost cluster segments. Possibly I hit some sort of limit here, causing the problem? There was no sign of the remaining 40GB of files that should have been there - I assume windows decided to destroy the segments. Thanks MS! Luckily I had the sense to back up a lot, but not all, of these files. I'll be trying some other recovery steps, but I think the data is gone for good. The following is a useful page detailing the problems with scandisk: http://users.iafrica.com/c/cq/cquirke/scandisk.htm Backup, backup, backup, I can't stress it enough. Time to start following my own advice |
#4
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I forgot to add that when the scandisk process finally finished, I was
asked if I wanted to repair the files. As with the cancel option, this quickly defaults to a yes and the repair process starts (I was lucky to be at the PC at the time to see this at all). Another message then said I did not have enough space on the disc for the repair and windows booted up. I had filled less than half the drive, so I was unlucky here, maybe temp repair files meant there wasn't enough space left to create repaired copies of the files? If the utility had given me the option, I could have chosen another drive to send the repaired files to, but there was no such option. Even a warning when it starts to say 'this could damage your files - please use a file recovery program first' would be useful - why don't they do things like this??? I felt I should add this info, as someone else may be luckier and have the necessary space available. Possibly scandisk would have repaired my files correctly had my disk been emptier- i'll never know. In my case, windows now showed a directory tree - all files and folders were present and correctly named, but the files were all 32k in size (I assume this is what the 'truncated' part of the scandisc messages mean?). Did scandisk chop off a 32k segment from each file, or create new 32k versions of each file? I'm still looking into this, as there may still be untouched files on the drive that I can recover (possibly with a raw file recovery program that looks for file signatures). My advice at this point to anyone seeing this utility start up would be to stop it immediately, recover and back-up everything you need there and then using a file recovery program, and THEN risk letting scandisk fix things. **Please note I am referring to the utility that starts on rebooting a Windows2000 machine and is a black screen, I assume it is 'scandisk' or 'chkdisc' etc but not sure. I'm not referring to the good old bluescreen 'scandisk' we all know from Win95/98 - that one never caused this much damage! - - edited a couple times to add info. |
#5
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Hi floval, this message probably won't help you much considering the
date of your post, but perhaps it can be useful to others since i could hardly find anything useful about it on the internet. 3 Days ago i went through the same thing. This is on my 160GB Western Digital, using Win XP. I bought this drive less than 6 months ago and there was no indication of the drive failing before it happened. After the 24 - 30 hours in scandisk the drive also seems to be working fine, except for about 80% of my files only being either 32kb in size or 64kb and another 10% being renamed to a bunch of ascii characters, some with a very large filesize. For the past day i've been searching for data recovery tools, basically having little to no luck with them until now. I've found this program called "Recover my Files v3.2" that seems to be doing the trick. Already i have managed to recover my most important files that the disk had indicated to be only 32kb in size. Also, during my use of various data recovery tools i have discovered something that may be connected to the problem. Some of these tools indicated that the physical size of my disk is only 128GB, however the logical size is something around 149GB. Now i'm not expert at this and i don't have a clue what it means, but the problem started after i passed the 128GB. Also i have read another post from someone where the problem had occured twice. Both times, he claimed, it happened when the 160GB disk was at about 80% of its capacity, which once again equals the 128GB barrier. Perhaps the problem is not the disk itself. IIRC on "older" mainbords the maximum capacity for a drive is 128GB. Why the drive does show up as 160Gb then is unclear to me. But perhaps some of the techies around here can provide an explanation. Regards from The Netherlands, Max floval wrote: I've just encountered this very problem, so will recount what happened in case it's of any use to others. It's too late for me unfortunately: My PC has a 13GB Win2k C: Drive and a 160GB Seagate D: Drive for storing my music collection. No previous signs of problems with the 160GB drive, but on a boot up W2k invoked scandisk (I think) which then started checking the drive automatically (it gives 10 seconds to cancel) and showed the infamous "bad links in lost chain at cluster" messages. I missed the chance to cancel, and unfortunately decided to let it finish. My PC is 1.1GHz, and the procedure took 29 hours. It reported checking 4,882,818 clusters. That means a cluster size of 32k I believe. When the procedure had finished I checked my D: Drive in windows and saw ALL my music files had been changed to 32k files. Curiously a 'lost files' (or similarly named) folder had been created, containing exactly 10,000 32k files which totalled about 350MB. These were lost cluster segments. Possibly I hit some sort of limit here, causing the problem? There was no sign of the remaining 40GB of files that should have been there - I assume windows decided to destroy the segments. Thanks MS! Luckily I had the sense to back up a lot, but not all, of these files. I'll be trying some other recovery steps, but I think the data is gone for good. The following is a useful page detailing the problems with scandisk: http://users.iafrica.com/c/cq/cquirke/scandisk.htm Backup, backup, backup, I can't stress it enough. Time to start following my own advice |
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