Various types and versions of BIOS may use different parameters. For example, “A, C” – the first booting from a floppy-disk and the second booting form the first hard drive; “C Only” – booting only from the first hard drive; “C, CDROM, A” – the first booting from the first hard drive and the next ones from CD-ROM and from A; “D, A, SCSI” – the first booting from the second hard drive and the next ones from a floppy and from a device connected via SCSI-controller.
Each user can individually set the sequence of device bypass during booting. You can do the following: do not set a floppy-disk as the first device (a value Floppy or FDD). Remember to remove a floppy with no boot information on it from a drive before switching on; otherwise the computer booting will be interrupted pending a boot floppy in a floppy drive. To solve such problem, click any button after a floppy has been ejected from the drive. if there is no boot sector in CD-ROM, it is just ignored.
After all parameters are set, save changes in BIOS and reboot your computer. Enter the main menu and select Save&Exit Setup. A window appears that warns you about parameter changes and an attempt to exit BIOS Settings. When you press Enter or Y (Yes), all parameters will be saved and a computer will automatically reboot with new parameters. When you press Esc or N (No), you will return to the main menu of BIOS Settings.
To exit BIOS without saving any changes, select “Exit without Saving” in the main menu and press Enter or Y in the information window. Your computer will continue its booting with the previous parameters.