Maintenance Routines. Couple of things : 1. Does anyone ever do Thorough Disk Scan? It takes so friggin' long! I was recently told by computer after an attempt to Defrag was halted (some message said the drive was changed in the process) that I might want to run a Thorough Disk Scan for errors. The message did NOT advise me to choose the Correct Errors option on the Thorough Scan, but after I had started it, and realised that at the rate it was scanning all the clusters, this would go on for many, many, many hours, it occurred to me that I would have been mighty po'd to be told at the end, that I would have to run it again to correct any errors. Perhaps it would just flag those errors, so it could go directly to them to make corrections, but I've no idea. Anyone know? Anyway, I halted the Thorough Scan after 20 minutes, then rebooted the computer, and ran Defrag again, and this time successfully. So I have no idea if there are any "errors" (whatever they are) on the disk, and am left with the nagging fear that many computer dialog boxes are as helpful as ill-educated monkeys. 2. Defragging. Defragging often restarts itself, ie, chugs along for 10 minutes, says its at 72% or something, then seems to stop and go directly back to 0. Fortunately, once it reaches 10% again, it seems to speed-scan thru to where it stopped, and continue from this point. What's going on? Why can the Defrag software not over-ride any other processes that may interfere with it? If I wanted to stop at 72% (for example) would my computer be less fragmented and more stable than when I started the process, or does it have to be 100% defragmented for the process to be of any value?