Type; Type; Text (printed or printed); The type of ...

Transitive verb & typing

Test (blood type); Classification by type; Be a model of; [Printing] To cast (type, etc). )

2.LBA/Large model

LBA

Logical block addressing mode, that is, logical block address mode. In LBA mode, the set parameters (such as cylinder, head and sector) are not actual physical parameters.

When accessing the hard disk, the IDE controller converts the logical address determined by parameters such as cylinder, head and sector into the physical address of the actual hard disk.

In LBA mode, up to 255 heads can be set, and other parameters are the same as those in normal mode. It can be calculated that the accessible hard disk capacity is 512× 63× 255×1024 = 8.4g..

Big mode

Big mode, also known as big track mode, is a working mode for those who don't support LBA mode setting. The maximum hard disk capacity it supports is 1GB.

3. Block (multi-sector transmission): Activate or close the sector transmission function.

4.PIO mode

PIO, spelled "Programming Input/Output Model" in English, is the earliest data transmission mode of hard disk, with low data transmission rate and high CPU utilization. When transmitting a large amount of data, the system will stop because it takes up too many CPU resources, and other operations cannot be carried out.

PIO data transmission modes are divided into three modes: PIO mode 0, PIO mode 1, PIO mode 2, PIO mode 3 and PIO mode 4. The data transmission rate ranges from 3.3MB/s to 16.6MB/s/s ... Limited by low transmission rate and high CPU utilization rate, this data transmission mode was quickly eliminated.

5.DMA mode

Direct Memory Access. This refers to a high-speed data transfer operation, which allows data to be read and written directly between external devices and memory without CPU intervention.

The whole data transmission operation is under the control of DMA controller.

In addition to doing some processing at the beginning and end of data transmission, CPU can also do other work during transmission.

In this way, most of the time, CPU and input and output are running in parallel. Therefore, the efficiency of the whole computer system is greatly improved.

6. Royal Swedish Airlines

The full name is "self-monitoring, analysis and reporting technology", that is, "self-monitoring, analysis and reporting technology".

The hard disk supporting S.M.A.R.T technology can analyze and compare the operation, history and preset safety values of the magnetic head, disk, motor and circuit through the monitoring instructions on the hard disk and the monitoring software on the host computer. When something is out of the safe range, it will automatically warn the user.

7.32-bit data transmission

32-bit data transmission means "32-bit transmission mode", which sets the data transmission mode of the hard disk.

In the early days, when the hard disk communicated with the bus, the data was transmitted with 16 bits, while the hard disk supporting 32-bit transmission mode could transmit 32 bits at a time, which obviously provided better performance.

In fact, all hard disks now support 32-bit transfer mode, so this option should be set to Enabled.

References:

Baidu encyclopedia _BIOS