Method of reinstalling system without optical drive floppy drive

        No optical drive floppy drive reloading system, optical drive, floppy drive is very popular, so many computers will be equipped with these things, but in some cases, such as equipment damage, laptops do not have optical drive, floppy drive, etc., many things can not be done . For example, many people often use CDs to reinstall systems and the like, but in fact they are not so bad. There is no CD-ROM or floppy drive. We can reinstall the system and flash the BIOS!
Example: Light, soft and no reloading system
Recently, a computer in the unit has been loaded with a lot of games, which makes the system very slow. To improve this situation, it is planned to format the hard disk and reinstall the system. But the trouble is that the floppy drive and the optical drive are both damaged and cannot be used, and the graphics driver cannot be found. Fortunately, the machine hangs two 4GB hard drives (each has only one partition), respectively Hardisk0, Harddisk1, the BIOS is set to boot from Hardisk0 (C drive), Hardisk0 is installed Windows 98 (we are ready to reinstall the system), Hardisk1 (D drive) has a Windows 98 installer backup, nothing more.
We first back up the graphics driver files from C:windowssystem to the D drive. However, in this case, regardless of the MS-DOS mode or the MS-DOS mode of Windows 98, the C drive cannot be formatted, and the D drive cannot be formatted. What should I do?
We thought of the SYS DOS command and passed the system of the C disk (Hardisk0) to the D disk (Hardisk1) with "SYS c: d:". The operation was successful. Then modify the BIOS settings and change to boot from Hardisk1. After rebooting, Hardisk1 becomes the C drive and Hardisk0 becomes the D drive. Then use the DOS command "Format d: /s" to format the D disk (Hardisk0) with the system, the operation is successful. Modify the BIOS settings again, change to the original boot from Hardisk0, and start successfully. Double-click the backup Windows 98 installer on the D disk (Hardisk1) to install it. Soon the system is installed. The graphics driver is also installed from our backup file. Everything is OK. In the absence of a CD-ROM floppy drive, not only the hard disk was formatted, but the system was reinstalled.
Don't look at the many English letters in the article. It is very unpredictable and difficult to understand. In fact, it is not necessary to carefully follow the steps and do it.