KR100251919B1 - Operation method for high density storage device - Google Patents

Abstract

PURPOSE: A method for driving a high density storing device is provided to use a plurality of HDDs added in accordance with a capacity without exchanging the standard ROM BIOS when a high capacity HDD more than 528MB is used. CONSTITUTION: It is checked whether connected hard disk drivers are the IDE type HDD(5a), respectively. If connected hard disk drivers are the IDE type HDD(5a), it is checked whether capacities of the hard disk drivers are more than 528MB(5b). If a capacity of the hard disk drivers is more than 528MB(5b), it is checked whether the capacity of master HDD is more than 528MB(5c). If capacity of master HDD is more than 528MB, it is checked whether the capacity of slave HDD is more than 528MB(5d). If the capacity of slave HDD is more than 528MB, a fixed disk BIOS is recorded in a specific area of the slave HDD and the disk BIOS is recorded in a specific area of the master HDD. If the capacity of slave HDD is not more than 528MB, a disk BIOS is recorded in a specific area of the master HDD(5f). If capacity of master HDD is not more than 528MB, it is checked whether the capacity of slave HDD is more than 528MB(5i). If the capacity of slave HDD is more than 528MB, a master HDD boot sector is modified(5g), and a disk BIOS is recorded in a specific area of the slave HDD.

Description

How to Drive High Density Storage

1 is a system applicable to an embodiment of the present invention

2 is a ROM BIOS according to the present invention

3 is a program diskette format diagram according to the present invention.

4 is a diagram of a HDD recording medium data according to the present invention.

5 is a flow chart according to the present invention

6 is a flowchart when the master HDD of the present invention is 528 MB or more.

7 is an exemplary view when more than 528MB and slave 528MB of the master HDD according to the present invention.

The present invention relates to a method of driving a high density storage device, and more particularly, to a method of using a high capacity HDD (Hard Disk Driver) of 528 MB or more in a personal computer compatible model.

IBM PCs, currently the most popular personal computer, use interrupt 13H for ROM BIOS service routines to input and output hard disks. At the time of IBM PC release, the ST506 hard disk is the mainstream, and ROMBIOs are mostly written for this, and nowadays, the difference between the interface of the IBM PC BIOS and the ATA interface (cylinders, heads, sectors) is widely used. The maximum allowable capacity of the HDD is limited to 528MB (1MB = 1,000,000bytes). This hasn't been a big problem in the past, but it was a fatal problem when high-capacity hard disks were released. There are two ways to solve this problem.

The first method, ROM BIOS program change, must be carried out by the original computer manufacturer. Currently, newly developed and released PCs have been changed to ROM BIOS and can use HDDs larger than 528MB. However, many PCs that are already in use do not use ROM BIOS with these functions, so the ROM needs to be replaced. A way to change the ROM BIOS without replacing the ROM is to insert a new ROM BIOS installer program, a secondary driver, into the area cylinder 0, head 0, and sector 1 where the boost trap loader first runs the program during the boot of the IBM PC. It is a way to replace the BIOS. This method has many advantages in terms of cost, but most programs use this area for partition tables or other special purposes, and there are many problems in terms of compatibility with programs that do not use HDD BIOS for data input and output. In addition, when a file system is damaged due to a virus or other problem, recovery is difficult. The second method, as a device driver, is to use a HDD as a block device in a DOS environment, and a SCSI HDD or CD-ROM is widely used. This method is very advantageous in terms of compatibility and other aspects. However, since it is installed after DOS has been printed, the useable environment is limited to slave drives. This is the best solution when the master drive is less than 528MB and the slave drive is more than 528MB.

Accordingly, an object of the present invention is to provide a method of using a plurality of HDDs added according to capacity without replacing the standard ROM BIOS in using a high capacity HDD of 528 MB or more.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a view for explaining an embodiment of the present invention,

Keyboard 500 as input device, Monitor 400 as display device, Storage device ROM, RAM 300, Hard disk drive (HDD) as auxiliary memory device, Floppy disk drive ( FDD) and a central processing unit 100 as a control device.

2 is a ROM BIOS configuration diagram according to the present invention,

3 is a program diskette format example according to the present invention.

4 is an example of HDD media data type according to the present invention.

5 is a flowchart during initialization according to the present invention.

A format checking process for checking whether an IDE type HDD is

In the IDE method, a unit capacity check process for checking whether HDD is 528 MB or more, and when the HDD is 528 MB or more in the capacity checking process, record information data in a specific area of the slave HDD when the master slave HDD is 528 MB or more, and only the master HDD is 528 MB. An information recording process of recording the information data in a specific area of the abnormal master HDD;

In the information recording process, when the master HDD is 528 MB or less and the slave HDD is 528 MB or more, a modification process of modifying the boot sector of the master HDD and recording information for finding a slave HDD specific replacement area is performed.

6 is an exemplary diagram when the mast HDD of the present invention is larger than 528MB, and loading new fixed disk code information from the HDD;

Executing the loaded new coding information of the process;

Converting the executed information into HDD parameters;

After converting the HDD parameters, the HDD is initialized and a normal process is executed.

7 is a flowchart when the master and slave HDDs are within 528 MB according to the present invention.

If there is more than 528MB when checking if there is a slave HDD, the process of reading the fixed fixed disk code,

Executing the fixed fixed disk code read in the above process, converting the obtained HDD parameter;

Initializing the converted HDD and converting it into a master HDD boot code.

Therefore, in detail with reference to the accompanying drawings an embodiment of the present invention,

In general, the method using the boot driver is closely related to the booting process of the IBM PC. The system booting of the IBM PC is performed by the power on or reset button, and the system is first started from the power on by using the boot and boot. It performs the function of checking and diagnosing the installed hardware. If an error occurs, the execution is stopped and an error is reported.

If the above steps are completed normally, INT 19H is called to check if there is a disk in the floppy disk drive. If it is, the boot record (cylinder 0, head 0, sector 1 sector (512 bytes) of sector 1) is stored at address 0000: 7C00. After loading, transfer control to this program. If you can't boot from the floppy, read boot record from hard disk 0 and transfer control to it. If both fail, it will run its own ROM BIOS, but most of the 286 and above PCs are not equipped with a ROM BIOS. The boot record is always located in the absolute cylinder cylinder 0, head 0, sector 1 of the disk (LBA number 0 in the LBA concept), so that various OSs can be executed by storing programs in this location. Since this area is not a clearly defined format, each OS or program uses its own format, but in the PC environment where DOS is generalized, it is used as two areas of partition table and boot code.

This step 5 is wrong, and the bootcode is usually only 512 bytes in size, so rather than running a complex program, it acts as an initial program loader that loads and runs another program that is slightly larger. To replace the IBM PC ROM BIOS, limited to 528MB, with a new program, you must modify the boot record program.

Then, as the first procedure of OS porting of general OS programs, one hard disk can be used by several operating systems, so check the disk partition table to indicate this, and read the first sector (OS BOOT RECORD) of the active system area. Follow the procedure to transfer control to this program. In the next step, you run the run OS boot recording process. This process usually performs the initial OS loader program, and in the case of DOS, it checks whether it can boot into DOS, and if so, reads the DOS kernel and transfers control to this program.

In this process, the core program of the OS is executed and the OS is ported to the system. In case of DOS, IO.SYS which is in charge of interface with peripheral device and MSDOS.SYS program which configures file system is executed and OS device is loaded.

This procedure is executed after the OS is initialized. It loads OS-specific device drivers to support hardware or other devices that are not supported by default. In DOS, this is what appears as DEVICE = in your CONFIG.SYS file. Hard disks larger than 528MB are not supported by default, so they can be supported as device drivers. However, the device driver is a device that goes up after the OS is installed.

Therefore, in the present invention, the CPU 100 checks whether the connected hard disk drivers HDD1 to HDD2 are IDE-type HDDs in step 5a. In the case of IDE type HDD in step (5a), it checks whether the connected hard disk drivers (HDD1 to HDD2) are HDDs of 528MB or more in step (5b). When the HDD is greater than or equal to 528 MB in step (5b), it is checked whether the HDD serving as the master is greater than or equal to 528 MB in step (5c).

When the HDD set as the master is greater than or equal to 528 MB, it is checked in step 5d whether the slave HDD is greater than or equal to 528 MB. In step 5d, when the slave HDD is larger than 528MB, the fixed fixed disk BIOS is recorded in a specific area of the slave HDD, and the replacement fixed disk BIOS is recorded in the specific area of the master HDD. If the slave HDD is not larger than 528MB in step (5d), the bias of the replacement fixed disk is recorded in the specific area of the master HDD in step (5f).

When the master HDD is not 528MB or more in step (5c), check whether the slave HDD is 528MB in step (5i) and modify the master HDD boot sector in step (5g) when it is 528MB or more. Write a fixed fixed disk BIOS in a specific area.

If the master HDD is larger than 528MB, the new fixed disk code is loaded from the HDD in step (6a), executed in step (6b), and initialized in step (6d) by the HDD parameter.

FIG. 7 is a flowchart illustrating a master HDD of 528 MB or more and a slave HDD of 528 MB according to the present invention, and checks whether there is a slave HDD in step 7a. If it is not there, it executes IBM PC boot code and checks if slave HDD is over 528MB in step (7b) when there is slave HDD. In step (7b), when the PC is booted up when it is not more than 528MB, the IBM PC is booted up. When it is more than 528MB, in step 7c, the replacement fixed disk code is read from the slave HDD and the replacement fixed disk code is executed. Initialize and execute the master HDD boot code in step (7g).

As described above, there is an advantage of using a high capacity HDD of 528MB or more by adding a separate S / W driver without replacing the standard ROM BIOS.

Claims (2)

In the high-density storage method, the type checking process for checking whether the IDE type HDD, A unit capacity checking process for checking whether an HDD of 528MB or more is used in the IDE method; An information recording process of recording information data in a specific area of a slave HDD when the master slave HDD is 528MB or more in the capacity checking process and recording the information data in a specific area of the master HDD of 528MB or more in the master HDD; When the master HDD is less than 528MB and the slave HDD is more than 528MB in the information recording process, a modification process of modifying the boot sector of the master HDD and finding information for finding a specific area for the slave HDD is performed. . In the high density storage method of the HDD, A first step of checking whether the master HDD or the slave HDD is larger than 528 MB, a second step of loading new fixed disk code information from the HDD, A third step of executing the loaded new coding information of the second step; A fourth step of converting the executed information of the third step into an HDD parameter, A fifth process of initializing the HDD and executing a normal process after the conversion to the HDD parameter of the fourth process; A sixth step of reading an alternative fixed disk code if the master or slave HDD is within 528 MB and if the slave HDD is checked if there is more than 528 MB; A seventh step of executing the replacement fixed disk code read in the sixth step and obtaining and converting it into HDD parameters; And converting the converted HDD of the seventh step into a master HDD boot code.