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16 Dec 2011  
JMH

Win 7 Ultimate 64-bit. SP1.
 
 

Bug Check 0x7B: INACCESSIBLE_BOOT_DEVICE

The INACCESSIBLE_BOOT_DEVICE bug check has a value of 0x0000007B. This bug check indicates that the Microsoft Windows operating system has lost access to the system partition during startup.


Quote:
Cause

The INACCESSIBLE_BOOT_DEVICE bug check frequently occurs because of a boot device failure. During I/O system initialization, the boot device driver might have failed to initialize the boot device (typically a hard disk). File system initialization might have failed because it did not recognize the data on the boot device. Also, repartitioning the system partition or installing a new SCSI adapter or disk controller might induce this error.

This error can also occur because of incompatible disk hardware. If the error occurred at the initial setup of the system, the system might have been installed on an unsupported disk or SCSI controller. Some controllers are supported only by drivers that are in the Windows Driver Library (WDL). (These drivers require the user to do a custom installation.)
Further Reading...
Bug Check 0x7B: INACCESSIBLE_BOOT_DEVICE
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