Optimize Daily
Fast defragment and optimize the selected disk(s). This script is designed for every day use. It moves a minimum of data on the harddisk and finishes very quickly, but will not defragment extremely large files and will not fill all the gaps on the disk. The script will exit automatically when it finishes.
The script will first defragment and optimize the MFT and all the directories, then the files used when booting, the regular files, and the spacehogs. Between the zones it creates gaps for temporary files.
Optimize Weekly
Defragment and optimize the selected disk(s). This script is a compromise between the Daily and Monthly scripts. It will more thoroughly defragment files and fill gaps than the Daily script, but will not sort files like the Monthly script.
The script will first defragment and optimize the MFT and all the directories, then the files used when booting, regular files, and the spacehogs. Between the zones it creates gaps for temporary files.
Optimize Monthly
Thoroughly defragment and optimize the selected disk(s). This script is designed for incidental use, for example once per month. It will sort all the files by their full path, and will therefore take a long time to finish.
The script will first defragment and optimize the MFT and all the directories, then the files used when booting (sorted by boot sequence), regular files (sorted by path), and the spacehogs (sorted by path). Between the zones it creates gaps for temporary files.
Flash memory disks
Defragment and consolidate free space on the selected disk(s). This script is specially designed for Flash and SSD disks. It will defragment all the fragmented files and make the free space as large as possible by moving all files to the beginning of the disk.
Many people think that flash disks do not benefit from defragmentation and optimization because bandwidth and access time are the same for the entire disk, unlike mechanical harddisks which are faster at the beginning than the end. But fragmented files need extra processing time inside Windows, not noticeable on mechanical harddisks but very significant on fast flash memory disks. Even more important is free space optimization. Flash memory is written in large blocks, and if free space is fragmented then Windows has to (read and) write much more data than the size of the file. This takes time, which translates into lower speed.
Flash memory has a limited number of erase-write cycles. The script is specially designed to move as little data as possible, but still uses up some of those cycles. My advise is to use some discretion and not run this script every day, but only incidentally, for example once per month.
Analyze only
Analyze the selected disks. The script will automatically pause between disks, so you can view and interpret the diskmap.
Defragment Only
Defragment all the files and directories on the selected disk(s). The script will first defragment files for which it can find a large enough gap, and then slowly defragment files that are bigger than the largest gap by shuffling data.
Are you comparing with another defragmenter? Use this script. MyDefrag uses wrap-around fragmentation, a concept unique to MyDefrag. The DefragmentOnly script will turn this setting off and is the only script that is more or less compatible with other defragmenters. For more information see the * IgnoreWrapAroundFragmentation setting in the MyDefrag manual.
Please note that it is a BAD IDEA to only defragment a volume, you should also optimize (the gaps on) a volume. Defragmentation results in more smaller gaps on the volume, because a file with 2 fragments will leave 2 gaps behind (worst case) and will make a big gap smaller. Gaps promote fragmentation and it is best to have as few gaps as possible. The "Defragment Only" script can be useful in certain situations, but it's usually better to invest a bit more time and run one of the Optimize scripts.
Consolidate Free Space
Move files and directories to the beginning of the disk(s). This can be useful on very full disks, to make room for maneuvering big files. The script will defragment all fragmented files and will fill all the gaps. It does not do any optimization, such as sorting the files into zones.
although i then discovered it doesn't work on windows 7 anyway
