Electrical computers and digital processing systems: support – Digital data processing system initialization or configuration – Loading initialization program
Reexamination Certificate
2011-07-12
2011-07-12
Tran, Vincent T (Department: 2115)
Electrical computers and digital processing systems: support
Digital data processing system initialization or configuration
Loading initialization program
C713S001000, C714S002000, C714S006200, C714S042000, C711S161000, C711S162000
Reexamination Certificate
active
07979690
ABSTRACT:
Method for booting from a backup, including loading an initialization application that identifies a storage with a backup; activating a handler of a BIOS interrupt module, for intercepting boot loader requests to the storage, and for redirecting them to the backup; creating a bitmap of the blocks in the backup and of a writable storage device to which new data will be written; initiating the BIOS to load and execute boot blocks from the backup; transferring control to a routine defined by a boot record in the boot blocks; activating an I/O filter for intercepting requests to the writable storage device; for write requests, the filter writes a corresponding block to the writable data storage, and marks this block in the bitmap; for read requests, the filter checks the bitmap if this data block was unchanged, and redirects the read request to the backup, otherwise, the filter redirects the read request to the writeable storage device.
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Beloussov Serguei M.
Dyatlov Dennis S.
Lyadvinsky Maxim V.
Tsibrovsky Juri V.
Acronis Inc.
Bardmesser Law Group
Tran Vincent T
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