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A Data Backup Method for Computers having Removable HDDs Disclosure Number: IPCOM000014486D
Original Publication Date: 2000-Sep-01
Included in the Prior Art Database: 2003-Jun-19

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A Data Backup Method for Computers having Removable HDDs Disclosed is a method to backup the primary HDD's data automatically into the secondary HDD without user's interaction or awareness. This method is designed to protect the backup data from any impact to the HDDs and to eliminate any user waiting for the backup completion. Usually the system is working in HDD Normal Mode. (Fig's (b)) In this case, the secondary HDD is merely used to store any data or a part of Operating System. By changing from HDD Normal Mode to HDD Backup Mode, the secondary HDD cannot be accessed by any Operating System drivers or applications due to a certain hardware mechanism disabling the secondary HDD functions or the interface to the HDD. (Fig's (a)) Only the system firmware knows a special mechanism and a method to write the data to the secondary HDD. In this case the disabled secondary HDD is parked or powered down for its disk head protection.