An error was detected on device \Device\Harddisk1\DR1 during a paging operation.

Error in VM:

Event log error-id: 51

Error message “An error was detected on device \Device\Harddisk1\DR1 during a paging operation.”

In the backup error log “It was not possible to create volume snapshot for ‘E:\’. System error: ‘QueryStatus() failed’.”


Cause: Microsoft provides hot fix for the VSS issue for windows 7 and Windows2008r2 which was not installed.

Solution: Install the two hotfix provided by Microsoft

1.       Windows6.1-KB975688-x64.msu

2.       Windows6.1-KB976099-x64.msu

Patch download url :

This solves the problem.


Unable to source /lib/lsb/init-functions cannot proceed vcloud director vmware

Error: Unable to source /lib/lsb/init-functions cannot proceed vcloud director vmware

Cause: Prerequisite library files not installed on Linux os.

Solution: Install redhat-lsb application; (eg.) # yum install redhat-lsb –y


One more prerequisite of vcloud installation is apache service should be stopped or not to be installed on the Linux OS; other wise even after the successful installation of Vcloud director the webpage will not be displayed due to vmware-vcd service not binding to port 80.