How to interpret Event Viewer reference to "\Device\Harddisk3\DR3"

Question

My Win 7 Event Viewer is showing error messages saying
> The driver detected a controller error on \Device\Harddisk3\DR3.
and I need to relate that to a particular drive.  Is "DR3" = "Disk 3" in the Disk Management console?  If not, how do I determine the unit responsible for the error?

Answer 1

I think you should forget about the "DR3" and just look at "Harddisk3" instead. On this computer the Harddisk number corresponds to the Disk number in Disk Management.
Looking in both "Globals" and "Devices" in Winobj, I think that \Device\Harddisk3 is a namespace and DR3 seems to represent the device (Harddisk3) within that namespace.
As noticed by Fleet Command in the afore-mentioned thread, removing and replugging a USB drive increments the "DR" number - for example, \Device\Harddisk7\DR7 becomes \Device\Harddisk7\DR8 and then \Device\Harddisk7\DR9 etc.
Also, my System drive (\Device\Harddisk0\DR0) and my RAM drive (\Device\Harddisk5\DR0) both use "DR0"
Looking at the partition entries for all drives in "Devices", Partition0 seems to always be a symbolic link to the drive itself eg HardDisk3\Partition0 points to Harddisk3\DR3 (try double clicking on Partition0). Also, GPT drives seem to have another
extra partition listed. For example, in the Devices screenshot below Partition 0 through 5 are listed. After discounting Partiton0, that still leaves 5 partitions. The drive actually only has 4 partitions. All my GPT drives are the same - they show an extra
partition - yet all the MBR drives show the "correct" number (but maybe there is another explanation).
Anyway, most of my drives have a unique number of partitions and, at least on this computer, at this moment, the "Harddisk" number corresponds with the drive index as shown the left hand side of the bottom half of Disk Management - ie \Device\Harddisk3
corresponds to Disk 3
Double clicking on PhysicalDrive3 in the Globals section of Winobj (as below)
Brings you here