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Automated Backup Method for OS Boot Hard Disk Disclosure Number: IPCOM000028717D
Original Publication Date: 2004-May-27
Included in the Prior Art Database: 2004-May-27
Document File: 2 page(s) / 29K

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A method to backup OS bootable hard disk

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Automated Backup Method for OS Boot Hard Disk

Disclosed is a method that uses a backup application to initiate shutdown of OS and invoke a BIOS service to copy the bootable hard disk data to the secondary hard disk.

Currently most backup applications have technical difficulties with backup/restore of OS bootable hard disk. For example, the backup applications that run on OS cannot backup/restore files that are exclusively accessed by other programs. Also, the restoration process requires a special instruction and some additional materials, such as bootable diskette or OS CD-ROM media.

Figure 1 shows a flowchart to create a complete backup of the bootable primary hard disk into the secondary hard disk. The backup process is initiated by a backup application. The application shutdowns OS, and then invokes a BIOS service via a device driver. After the BIOS service completes the backup, BIOS can power-off or reboot the computer automatically. Also, the method can eliminate the restoration process time.

1. The method uses the secondary hard disk which has the same interface (e.g. SCSI, IDE) as the primary hard disk, and has an equal or greater capacity to store the entire primary hard disk data.

2. The method uses an application to allow the user to initiate the backup process, and also allows the user to select either "power-off" or "reboot" action to be applied after the backup is complete. Also, the application can be started remotely or in unattended mode by a timer service.

3. The application calls a device driver to inform BIOS of the start of the backup process. The device driver sets a request flag to a hardware register, and then the application calls an OS API to shutdown and reboot.

4. As soon as the computer reboots, BIOS looks for the request flag. If the flag has been set by the device driver, BIOS starts the backup service code.

5. The computer hardware provides a GPIO pin so that BIOS can turn on/off the hard disk power. If the feature is enabled (i.e. the secondary hard disk is configured as a backup media),...