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A disk check will make this clear. If it is not the disk I would assume that it is the motherboard or the CPU, there may be different symptoms of the same issue, because they are different OSes and act differently. |
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I did not run check-sum test from OS windows. I am checking ntfs files under linux OSes (installed NTFS-3G 2011.4.12) (6 different ubuntu instances on 4 different hard disks). This weird behavior is not only on one hard drive but on FOUR DIFFERENT hard disks (and 5 different ubuntu linux instances). Two of hard drives are connected through SATA III/II. One hard disk is connected through USB 3.0 port but disk supports only usb 2.0. One ext4 partition is on USB flash drive (motherboard USB 3.0 and flash-drive USB 2.0). There is very low probability that all four drives have the same problem - especially if they are using different hardware connectivity (usb or sata) and have different hardware equipment (3 are "classic" magnetic hard disks (not SSD) , 1 is flash-memory usb stick). There is as well low probability that all of four ext4 partitions located on 4 different hard disks are wrong the same way. And all ntfs (8 partitions/6 hard disks) are correct. (Connected by sata or usb - internal or external HDDs.) Thats the reason why I do not understand. Because if it would have been problem only on one disk - thats I would understand - it could be hardware problem. But all of 4 disks have the same ext4 issue but not ntfs. So, I cannot assume that only ext4 partitions are wrong because of hardware failure and ntfs are correct. Or assume that I have ext4 partitions on wrong places and ntfs are on right places :-) That is really sounds to me as extremely low probability :-) And why is this happening only on files bigger than 3.9 Gigabytes ? I really made all those tests with so many combinations. ntfs partitions have been tested with "chkdsk /r" parameter many times within last months. - no errors. ext4 partitions have been tested without -c parameter ,not mounted, many times like "sudo fsck -t ext4 -v -y -f /dev/????" - no errors. |
solved
Hi,
I would like to thank all of you , who helped me to solved this problem. I have found out that one out of four memory modules is wrong. cheers, Martin |
Hi,
I have the same problem. My linux system is a ubuntu 11.10 (Kernel 3.0) and my hw specs are: AsusP8P67-deluxe, 16GB RAM (2133MHz), i7-2600K runnung from 4GHz upto 5.1GHz. My problem is to read a text file of size 3GB. A simple c program reads blockwise, sometimes i get errors. Also md5sum delivers a different of the 3GB file value after i read with my c program. I get this error on a raptor hdd 74GB (ext4), as well on a SSD disk(ext4) (corsair force gt 120GB). I also get this error on my 500GB samsumg data disk (ext3) if i run the same program. On the 500GB samsung disk I get one "Input/output error" when running md5sum. Hmm, .. very strange. A kernel bug?? The next thing what I try is to format the hdd with some other fs. Best, Michael |
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Let's see if this solves the problem also in the future. Currently I run on 4.8GHz. Michael |
This lets me assume that you didn't test your overclock for stability. Have you at least an eye on the temps or do you fry your system slowly?
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Temps are o.k. - I have an excellent watercooler. If I have time, I will try to reconnect the hdd's on the P67's SATA boards and try to repoduce the file read error with default bios settings. Best, Michael |
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