What you're after is actually some sort of 'hardware fingerprint', not an 'serial number'. The problem with this approach is that it's not 100% reliable. Proof: Microsoft didn't manage to find a way to properly limit OEM software to any single computer, you can actually re-install a OEM license on a new computer after a while!

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Every hard drive has a distinctive Volume Serial Number, with the chances of any two drives you encounter having the same serial number astronomically high. For this reason, the Volume Serial Number is often used as part of copy protection schemes. Delphi, how to get serial number of hard disk where installed application. Drive: = ExtractFileDrive (Application.

Once you agree there can't be a perfect solution you may look at your options and try getting something that's good enough. For my applications I'm creating a fingerprint based on info returned by GetSystemInfo, GetVolumeInformation and (for the 'C:' partition) and a selection of registry keys from HKLM HARDWARE (lots of registry keys actually, everything but usb, keyboard and mouse stuff). I'm reading hardware information from the registry because a Windows application can't really access hardware directly (DOS-style approaches can't work), and because I don't have time to figure out ways to determine hardware-related information for many different devices. My approach has the following disadvantages: • Uses the partition serial number, as set up by Format. An format would clearly change the fingerprint. • Uses information about the installed drivers. Updating an driver might actually change the fingerprint!

Moving a card from one PCI port to an other might change the fingerprint. None the less, even with all of this changing information taken into account, I get collisions: Something like 1/1000 computers! There are several factors at work here: • Big OEM build many computers using the same hardware.

Once done, you need to make right click on the Rainmeter icon available in the Windows 10 notification tray and select “ Refresh All” option from the list. You need to copy and paste the same folder to the Rainmeter Skins folder at the following location: C: Users YourName Documents Rainmeter Skins In the above location, you need to replace YourName with admin name.

They also clone HDD's in order to speed up software installation so different PC's might get the same partition serial number. • I'm building a very short hash from all that information, short enough so people can read it to me on the phone without too many mistakes. This system works for me, but it will not work for you if you expect to re-identify computers once they're reinstalled.

I had a similar problem back in the good old DOS days. I found out that the ROM of the installed hardware ie.

Video card, disk controllers seriel ports etc. Was accessible directly, since they are memory-mapped. This means that I was able to create a list of installed hardware, and use it to generate a 'serial number', that uniquely identified each computer (until the hardware setup was changed). I'm sure something similar is possible today as well. Check out, if you want to use this approach.

Regards • Frank.

Your code is not working because you are passing a double-quote in the WMI class name. Change this code GetWMIstring(','Win32_DiskDrive','SerialNumber'); To this GetWMIstring(','Win32_DiskDrive','SerialNumber'); Btw, you can improve a lot your WMI function (GetWMIstring) if you follow the recommendations of the answer to this question.

You should avoid, when more devices installed, PHYSICALDRIVE0 doesn't need to be first in database. PHYSICALDRIVE1 is first by me. I added where to query and it is working OK now.

For Win32_DiskDrive is property name DeviceID, for Win32_PhysicalDrive is property name Tag. Here changed part: function GetWMIstring(const WMIClass, WMIProperty, WMIWhere:string): string. Qry:='SELECT '+WMIProperty+' FROM '+WMIClass; if WMIWhere' then qry:=qry + ' WHERE '+WMIWhere; FWbemObjectSet:= FWMIService.ExecQuery(qry,'WQL',wbemFlagForwardOnly). PHYSICALDRIVE0')); y:=GetWMIstring('Win32_PhysicalMedia','SerialNumber','Tag='. PHYSICALDRIVE0')); / Dont forget to Call CoInitialize before!!!