PC slowing to a crawl? Want to speed up that hard disk drive access to files? Ever wanted a good freeware utility that can defrag hard disk drives in Windows effectively (better than the default Windows defrag) but don't know where to get it? Well, turns out that there are quite a number of freeware defrag tools for Windows on the Internet e.g. jkdefrag, ultradefrag, diskeeper lite etc.
After a fair bit of research and trials, i settled for JKDefrag. Reasons: It works on Windows 2000/2003/XP/Vista/2008/X64, is stable, reliable, under constant development, defrags and optimizes disk performance (almost) flawlessly, and it's FREE. The FREE part is persuasive but it is not the only reason. JKDefrag can deliver on most of the key performance parameters that paid commercial ware such as Diskeeper touts, including the "schedule and forget" feature when used in conjunction with another freeware like nnCron lite. You can read more about nnCron lite in my other postings.
Here's what i do to put JKDefrag to work. First, download and unzip it to the directory of your choice (no install or setup required). There are 2 "versions" of JKDefrag that you can choose to run - the GUI version (JkDefrag.exe) or the command line version (JkDefragCmd.exe).
I went for the command line option as it allowed me to piece together all the options that I need in a simple batch file and schedule it to defrag my harddisk everyday with nnlite. For first time run, this was the command that i use to defrag 2 hard drive partitions (c: and d:)
First time run -> JkDefragCmd.exe -a 7 -d 2 c:* d:*
For subsequent runs, this is the command that i use:
Subsequent runs -> JkDefragCmd.exe -a 3 -d 2 c:* d:*
You can find more details about the meaning of each parameter from the JKDefrag homepage at http://www.kessels.com/Jkdefrag/.
Latest version of JKDefrag at the time of this writing is V3.36.
Latest version of JKDefrag at the time of this writing is V3.36.
Note: In order to perform defragmentation effectively, it is generally recommended that you maintain at least 15% of free disk space.