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About windows8 last written times in DeviceClasses directory

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(@kanon)
Posts: 1
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Hi, All

I've got a situation where the last written times in the DeviceClasses directory are earlier than the device installed date in the setupapi.dev.log file.

In windows7 case, I've got the last written times as a below directory,

SYSTEM\CurrentControlSet\Control\DeviceClasses\{53f56307-b6bf-11d0-94f2-00a0c91efb8b}

But in this case, the last written times in the DeviceClasses directory has the date earlier than the device installed date in the setupapi.dev.log file.
And It seems that the value of the last written times in the USBSTOR directory is right.

I've done some research on this, and it seems to be the case for some Windows 8 computer I look at.

Please tell me which one is correct, DeviceClasses or USBSTOR ?

 
Posted : 24/03/2014 12:33 pm
keydet89
(@keydet89)
Posts: 3568
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kanon,

I've got a situation where the last written times in the DeviceClasses directory are earlier than the device installed date in the setupapi.dev.log file.

For the sake of clarity, what you're asking about is not a "directory"…it's a Registry key.

In windows7 case, I've got the last written times as a below directory,

SYSTEM\CurrentControlSet\Control\DeviceClasses\{53f56307-b6bf-11d0-94f2-00a0c91efb8b}

But in this case, the last written times in the DeviceClasses directory has the date earlier than the device installed date in the setupapi.dev.log file.
And It seems that the value of the last written times in the USBSTOR directory is right.

I've done some research on this, and it seems to be the case for some Windows 8 computer I look at.

Please tell me which one is correct, DeviceClasses or USBSTOR ?

I guess the question is, "correct" with respect to what? What is it you're trying to show?

Something else to consider, if you're trying to do determine the last (or first) time a device was connected to a system, is that you may not be looking at the right data points, and perhaps not considering other conditions. Anyway, it's hard to tell, as it's not abundantly clear what you're trying to demonstrate.

 
Posted : 24/03/2014 4:31 pm
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