When you start the computer you will have the hard disk test the computer to make sure it is working properly so when it is working the way it should, you should be looking at the part of the computer most useful to you (either the desktop when Windows is installed or the DOS prompt if MS DOS is installed)
A file in C means a file found in your computer's C Drive. Start > My Computer > C Drive
Different_modes_of_using_file_in_C
If opened a file on your USB drive, if you saved by just clicking save or Crtl+S, it will still be on the USB drive. Some programs however have a temp folder, where it may store recently opened files. To find it, go to my computer-> search -> Type "temp [The program the file was opened in] ->Enter the search and you may find it there.
C
You open two My Computer windows and make them small. Next, you go to your c drive in one to where the file is. In the other one go to the e drive where you want to copy the file to. click the file and hold down the left mouse button. Drag the file to your other window and drop it in the e drive.
Defrag c:
it is in c drive.
To install Turbo C from a pen drive, first, ensure that the pen drive is properly formatted and contains the Turbo C installation files. Connect the pen drive to your PC, then navigate to the drive in File Explorer. Open the Turbo C folder and locate the setup file (usually named "install.exe" or similar). Double-click the setup file and follow the on-screen instructions to complete the installation on your PC.
program file in c:\ drive
Pagefile.sys
Pagefile.sys
C:\windows\winn.sif