Is there such a thing as too much or too frequent defragmentation?I find that I defrag several times a day after flying and video making.Thanks. Scott

The only way its too agressive is if you're forcing it when there's little or nothing for it to do. Flying doesn't fragment the drive. Installing to FS sure can.Video making definitely does. So defrag away!You might reduce the lifespan of the hard drive unnecesarily be defragging too much, but if you think about it, does it matter if it moves those files now as part of a few, or later as some of many? It's the same number of read/write passes.Personally,I have always favoured little and often, sinply becasue I can run it as a background process using O & O while surfing, downloading or editing music on one of the other drives.Allcott

Thanks for the reply Allcott. I probably over do it a bit. It's a very high end (18 months ago) Dell system that is not online and used for flying and video making only. I have FS9 on it's own 80Gb drive (D) which is 92% empty, and the OS is on another 80Gb drive ©with 80% available when cleaned up. Some videos have up to 16-20 Gb of working files so C drive gets pretty messed up. I tend to defrag over and over until it completes almost instantly (nothing to do).Btw, I read your posts almost religiously!Scott

Successful defragmentations would not be harmful to your system, although probably unneccessary after a point. This procedure though is potentially dangerous if it or your system fails during the process, so the more you do it, the greater the risk. This just happened to a user trying a Beta version of a defrag program, that failed in the middle of it. As a result he corrupted his drive.

if you dont wait to long it

Yeah, that's always been my experience too - and I work a lot with music files so while the file sizes are huge, the file numbers are small. I'm sure it must be even more true if things are the other way around, like with a typical FS addon installation. Generally, I don't defrag after a single aircraft install, because there is an auto routine set on my rig to do the FS partition weekly anyway, and one aircraft won't drag down the loading times too much (but then I only keep ready-for-use aircraft in my Aircraft folder anyway. But after upgrading to GE Pro 2.11 and getting all the texture sets updated I most certainly did, before running FS for the first time with them installed.Allcott