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Windows 7: Very Slow Copy From one hardrive to another

13 May 2012   #1
gerobbins

windows 7 professional 64 bit
 
 
Very Slow Copy From one hardrive to another

I see this complaint all over the internet and no answers other than for users to look at drives and use Tera Copy, disable windows firewall, virus protection, adjust some settings like encryption, fetch off, etc., get drivers, hot fixes. I have done all those like other people suffering problem and like others did no good.

I have 2 internal 1 TB SATA III drives and for all practical purposes cannot copy large files between them at most times. Windows 7 professional with all updates (I presume, have auto-update on). I can copy a 700MB file from an XP machine to either of the Win 7 drives in 15 -20 seconds and if I try to copy the same file from Win 7 machine either way between the drives it estimates 30 min - a day or more and goes from 1/mb per second down to bytes/sec. If I go to XP machine and from attched folders there move a file from one of the Win 7 drives to the other Win 7 drive, the move is again < 30 seconds.

Task manager shows virtually no cpu activity during the copy done on Win 7 machine. Note, from Win 7 machine, if I copy from attached folder from xp machine to local folder, speed is fine for main drive (c) but slow on secondary drive.

What possible driver or hardware problem could cause snail pace from Win 7 machine drive to drive, but normal (100MB+/sec speed) when copying drive to drive from XP machine over local net?

To complicate things: this morning, after 3 or 4 days working on this problem, computer woke up and speed normal for all drives, but I would bet the farm that this will revert back to normal state next time I really need it. It's insane that if I want to copy a large file or folder from one drive to another, I have to go to my XP machine and do it over my local network. Thanks for any help.


My System SpecsSystem Spec
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13 May 2012   #2
sbrads

Windows 7
 
 

If your system is Intel chipset based it may be worth ditching the Win7 Microsoft SATA drivers and trying out the latest Intel RST ones, they work fine on my multi HD setup (no SSD). I couldn't get the Intel site to work ATM so here's a news item instead.........
Intel to Bring TRIM Support to RAID SSDs with RST 11.5/11.6 Driver - Softpedia
My System SpecsSystem Spec
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 Very Slow Copy From one hardrive to another




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