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De-fragment is the task in which the files on the hard disk are arranged sequentially like books in book-shelf so as to have faster access. Due to deletion of files creates many spaces in between two the files which leads to slower disk access and consumes more CPU.So to fix the issue we have defrag utility in windows which organizes the files in a contiguous way.It also properly separates the unused free space for the new files to be appended after the existing files.
A frequent de-fragmentation of the disk will give faster and disk access & increases overall performance of the system.
You can run the defrag utility from the prompt by the following way.
Start > Run > cmd then on prompt type the following command defrag <drive_letter:> <options>
Ex: defrag K: -f -v for force defragment and verbose(text) output on prompt. You can try by replacing the existing drive letter instead of K on your disk. see the output of the process on following screen.
You can also do the same process in GUI mode by Start > Programs > Accessories > System Tools > Disk Defragmenter Program.
You can analyze the drive to visualize the extent of fragmenting and then click on Defragment button.
Many times while using windows some files are unable to delete or read due to some disk errors so there’s necessity to repair and to run the disk check utility.We can run this by using following path My Computer > Any Drive >Right click > Properties >Tools Tab> Error Checking > Check-Now Button.But since it runs in Graphical User Interface(GUI) it takes longer time than that of command based direct run.
we can go to Start > Run > cmd and type the command as chkdsk <drive letter> <options>
Ex: chkdsk D: /F /V /R which not only will check drive D with verbose output,repair and forceful unmount of that drive before repair.
You can see the cleaning process as below.
Press (windows+r) key combination to open the Run Dialog box:
Type cmd in the Open filed & hit ok button
Then enter the command on command prompt which will be similar to following :
“C:\Program Files\R\R-2.13.0\bin\x64\Rgui.exe” http_proxy=http://proxy.ibab.ac.in:3128/
–“C:\Program Files\R\R-2.13.0\bin\x64\Rgui.exe” is an absolute path of the application which requires internet connectivity using proxy
— http_proxy=http://proxy.ibab.ac.in:3128/ indicates proxy address & port