Microsoft Technology Licensing, LLC

John D Service

Yi Meng

Neill Michael Clift

Narayanan Ganapathy

Andrew L Bliss

Fnu Sidhartha

Björn Levidow

Vincent R Orgovan

Wael H Bahaa-El-Din

Sidhartha

Checksum values are used to detect low-level data corruption. I/O operations, such as, for example, read operations and write operations, cause data blocks to pass through a number of low-level drivers when the data blocks are transferred between an operating system and mass storage location. A checksum filter driver intercepts a data block as the data block passes between low-level drivers as a result of the performance of an I/O operation. The checksum filter driver calculates a first checksum value for the data block. The checksum filter subsequently intercepts the data block as the data block passes between low-level drivers as a result of the performance of a subsequent I/O operation. The checksum filter driver calculates a second checksum value for the data block. The first checksum value and the second checksum value are compared. Data corruption is detected when a checksum mismatch occurs.

Detecting low-level data corruption

A system, method and interface for consistently capturing kernel resident information are provided. An operating system architecture includes user mode modules and kernel mode applications. A user mode module initiates a kernel mode information request through an application program interface identifying one or more process threads of interest. A kernel mode module captures information corresponding to standard kernel mode information and corresponding to the specifically identified process threads. The information is returned in a pre-allocated buffer.

System and method for capturing kernel-resident information

A method and a system for obtaining shutdown information for a computer allows a user to indicate a reason or reasons for the shutdown. The states of the user mode processes that are running on the computer are saved for later analysis. The state information as well as the shutdown reason entered by the user is stored in a computer-readable memory, such as in the form of a log file. A user may report a shutdown reason by selecting a reason from a predefined reason list and/or by typing a reason in a comment area.

Method and system for obtaining computer shutdown information

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John D Service