What is difference between Disk clean up and Disk Fragmentation..?

Disk clean up is delete all unnecessary files to gain more space an performance, it could be several depths of clean up, for example you can only do a browser cleanup, deleting history, cookies, cache and temporary files from your browser, or you can do a complete clean up deleting in addition all temporary windows files, prefetch files, and others, if you want o make a good cleanup try Ccleaner or Cleanup! programs for automated clean up your system. The fragmentation is different, when you download a file or create a new one on your hard drive the system search for the first empty cluster on it, and start to put the file there, but if the file is grater, the system search for the next free cluster and continue writing the file there (two empty clusters could be very separated) and so on, and many files are "fragmented" this mean the file was not write completely in one place, the are are many parts of the file along the disk. After a while of deleting files and creating new ones, most of them are fragmented and the performance is low because takes more time to read a fragmented file. The degragmentation tools take all fragmented files and write them in a space enough to accommodate the entire file, so the files are now wrote completely in only one place of the disk and no more fragmented in several parts. Hope it helps...

Disk cleanup deletes the temporary files while disk fragmentation arranges the clusters of file in your hard disk to make it more efficient and faster.

Well, i usually do both of them. First i use disk clean up and then i defragment the computer. They have a huge difference and i believe they work well together. Disk clean up is for removing unnecessary files such as temporary internet files, recycle bin files, etc and compressing old files. These files can really save up lots of spaces for our computer. while compressing old files do not mean that the files may be damaged. They are just being compressed and when we need them, we can still view them (even though it may take few seconds for loading) Disk defragmenting is for arranging similar files into a more complex and tidy spaces so it will cause some spaces to be free. we can take it simple like this. Our room with lots of trash, books scatter everywhere, and lots of messy things. Disk clean up is used to clean all the garbages, trash and unnecessary things. Then defragmenting is like you are arranging all those things you still use in order, so it looks more tidy. probably others can have better explanation regarding the better functions of these tools, yet i personally use these tools for this purpose only. Cleaning and arranging to have more space. wish it will be useful for you

The two are fundamentally different. Disk cleanup removes a lot of junk and unnecessary files from your computer. Files like temporary internet files and error log files will be removed. In addition, it will compress old files, though not current ones. On the other hand disk defragmenter does not remove any files. Typically the various parts of a file are stored randomly at many different places on the hard disk. So, when you try to access the file, the computer has to search in many places, and therefore slows down. The disk defragmentation utility moves all the bits of files into the same location, so that file access is quicker and the computer thus works faster and more efficiently.

ok everyone gave good definitions here but is fundamentally complicated how some of them sounds. so I would like to make it easier to understand imagine that your hard drive is a real library with real books when you make a disk clean what you do is that you go to the catalog stand where is the cards that says where is each book in the library (that is the file system table) and remove all the cards that makes references to old books that you are not using anymore. that means that the books are removed for their real stands. but this doesnt matter because if you get new books you can simply put the mover the one that doesnt have labels. as you can imagine when you clean the disk you start to make a bunch of holes in the catalog stand only making some space to add new cards that will make references to new book that will be replacing the one you discharged from previously. the continous add and remove of cards to your catalog might make the search of an specific book even harder with time specially because they arent arranged in a efficient way this process is call fragmentation. so here is where the defragmentation is necessary. When you defrag the hard drive what you are doing is taking this catalog and order it in the most efficient for the system to let you look for the books in the library. I hope that explanation was clear enough to be understood

disk clean up is clearing up the disk and fragment is the arranging the files in an order. in a simple words.

For me, disk clean up is a way of cleaning your deskstop just like deleting any unwanted icon of unused files. While disk fragmentation is doing it once a month of just like knowing the disk space of your pc and having synchronization of your files with proper space and making your pc running fast.

No it don't do the same task disk cleanup is removing or deleting unnecessary files while disk defragmenter is cleaning the fragmented files on disk that can slowdown your system and it only arrange your files to read your files faster.. Good day.. Happy MyLoting..