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It is now 3 days since I started CHKDSK and is still on 51%. The current status is: 2CHKDSK is verifying Security descriptors (Stage 3 of 3). Repairing the security file record segment. 51 per cent complete (599226 of 132864 file SDS/SI processed). This final 3rd stage is taking awfully long. At the current rate it is going to take just undera year to finish!! I have read that once CHKDSK is started that it should not be stopped. But as you will appreciate a year is a long time to wait. Any advice would be greatly welcomed.

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Just my two cents: The HDD is dying? :) (Try checking it with SMART, maybe with using an Ubuntu Live disc. Use "badblocks" to check your HDD surface. – Shiki Mar 11 '12 at 11:47
You could have slow CPU/RAM? How old is your HDD? Brand? Speed (rpm)? – Valoric Mar 11 '12 at 11:54
There are many parameters for starting a chkdsk, some of them seem to go over every friggen cluster, which on >1T disks can take forever. What is the exact set of parameters you used for starting it? Or what is the GUI selection item used for starting it? – Psycogeek Mar 11 '12 at 14:24
How big is this harddrive? 2TB harddrives can take over two days, especially a full chkdsk. – surfasb Mar 11 '12 at 19:07

Turn off your computer, give it a break for a few hours and then run chkdsk again. It just got stuck.

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I agree within the context that the user already knows that "it is not supposed to be stopped". I have seen it stick up like this before. After a reboot, it was able to complete the same, without problems for me. – Psycogeek Mar 11 '12 at 14:32
"give it a break for a few hours"? – Daniel Beck Mar 11 '12 at 14:49
Give it a break, goes with "run a thermal probe on the disk"? It would depend on the cooling of the system. Non-stop work for even a "green drive" , in a poor air movement location, and the disk can be warmer than normal operations. – Psycogeek Mar 11 '12 at 15:33

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