Which one has priority, sata0 or sata1?

sata0 takes priority, but bios can also be specified.

#The BIOS can set which hard drive to boot from. Or the machine automatically searches for the hard disk where the first active partition is located in order. If only one of the two hard disks has an active partition set, it is the primary hard disk. (Recommended Learning: PHPSTORM )

## Set BIOS. If there is no activity partition, it still starts from the active partition after searching.

Bois is the setting system of the motherboard. All motherboards that come with the hardware will have the Bois operating system set when they leave the factory. It can adjust other hardware.

BIOS (Basic Input/Output System, Chinese: Basic Input and Output System) System (also known as ROM BIOS, System BIOS, PC BIOS) is the firmware that performs hardware initialization during the power-on startup phase and provides runtime services for the operating system and programs.

BIOS first appeared in 1975 with the launch of the CP/M operating system. BIOS is preinstalled on the motherboard of a personal computer and is the first software loaded when the personal computer starts.

Now, the BIOS is used to initialize and test the system's hardware components, as well as load the boot program from a mass storage device (such as a hard drive), and the boot program loads the operating system. BIOS also provides a hardware abstraction layer for keyboard, display, and other I/O devices for the DOS operating system. Many newer operating systems no longer access the hardware through the BIOS after booting.

Many BIOS programs can only be executed on specific computer models or specific motherboard models. In the early years, BIOS was stored on ROM chips; now BIOS is mostly stored on flash memory chips, which facilitates BIOS updates.

The BIOS setup program is stored in the BIOS chip. The BIOS chip is a rectangular or square chip on the motherboard. It can only be set when the computer is turned on. (Generally, press F2 or Delete when the computer starts to enter the BIOS for settings. For some special models, press F1, Esc, F12, etc. for settings).

The BIOS setup program mainly manages and sets up the basic input and output system of the computer so that the system runs in the best condition. The BIOS setup program can also be used to troubleshoot system failures or diagnose system problems.

Some people think that since BIOS is a "program", it should belong to software, and it feels like Word or Excel that they commonly use. But many people don't think so, because it is still somewhat different from ordinary software, and its connection with hardware is also quite close.

To put it figuratively, BIOS should be a "bridge" connecting software programs and hardware devices, responsible for solving the immediate requirements of the hardware. The BIOS chip on the motherboard may be the only chip with a label on the motherboard. It is generally a 32-pin dual-in-line integrated circuit with the word "BIOS" printed on it.

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