How to create Bootable Disk ??

you can download a file called boot.exe from the Internet and also verify it with what operating system are you using with.download boot.exe for windows xp ,if you are using xp and for 98 then download boot.exe for windows 98 and run that program by inserting a floppy disk into your floppy diskette, wait for some time and the program is written to it. boot up with it to see,before that go to bios,enable the floppy as a first disk boot up device.