This seems to be pretty unsafe. I wouldn't try doing anything like this while the power is on.
Internal Drive
no
An Internal CD or DVD drive is a drive that is built in with the computer. As you can imagine a External CD or DVD drive is one that is not built into the computer and is plugged into one of the on board ports.
A computer's internal storage is the computer's internal hard drive(s). If the computer has a large internal storage at its base it will perform faster and more efficiently than a computer with less hard drive space, a large hard drive is good for gaming on a PC as well as storing and enjoying various other media such as downloaded movies, music, and books.
A CD, DVD or Blu-ray drive (optical drive) that is installed in the computer.The alternative is an external drive, which is a separate box you connect to the computer using a USB cable.
hard drive
It really depends if it is internal or external, with an external, you just plug it in via usb (if you're running XP), but if you have an older version of Windows, you might have to install drivers for a external. With an internal drive, you should just be able to open up tha computer, connect the IDE cables, then you should be ok. Go to the following site for help with an internal drive: http://www.pcmech.com/show/harddrive/43/
The default identity letter for the internal drive of a computer - is C.
The internal hard drive of a computer is an example of a drive on which data (files, folders, etc) can be stored.
without a hard drive your PC wouldn't work at all. so you must have a hard drive, whether its internal or external...
An Internal CD or DVD drive is a drive that is built in with the computer. As you can imagine a External CD or DVD drive is one that is not built into the computer and is plugged into one of the on board ports.
Internal hard disks are inside a computer and are covered by the case