Typical tasks like copying a file can be done in the shortest possible time, provided the Win 95 boot can be avoided. Before doing any of this to Win 95, start Win 95 and make a rescue floppy disk. Especially, do this if it's a new idea, and you are reading this for the first time. Most Win 95 installs were done by computer vendors. They have a habit of not supplying a rescue disk.
Hard disks fail.
There can be software problems caused later on by a Win 95 install program. Logic says you need a rescue disk in case the Win 95 boot fails. To do this, the attributes of the file have to be changed. It doesn't hurt to do this operation. Nothing happens if it turns out the operation was unnecessary.