Monthly Archives: December 2008

Deleting data before donating

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This was so easy I felt obliged to blog it. Under our house rule ‘not used it in a year, so it has to go’, our old P4 laptop is being donated. It held old tax records, Microsoft Money files etc which had to be deleted first.

One free and simple technique is Boot and Nuke. I download the small ISO and used this free ISO burning tool to burn a CD.

The laptop then booted from the CD into a Linux program which looks similar to below once running. I choose the default and it took about two hours to delete a 70GB 7400 rpm hard disk with a DOD Short (three pass) technique:

nukeandboot

Finally another 30 minutes using Averatec’s media recovery discs and it is now ready for someone else to enjoy.

IIS7 Gotcha – COM Error 80040154

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We have all seen the 80040154 COM error. Normally the solution is to run regsvr32 on the com dll so it is registered on the machine.

“System.Runtime.InteropServices.COMException (0×80040154): Retrieving the COM class factory for component with CLSID {D1CB0D81-7D2B-4064-9AC7-D0D88DEC3D16} failed due to the following error: 80040154.”

Of course regsvr32 was the first thing I did, but the error still happened in the ASP.Net MVC project on IIS7/ Server 2008. Using regedit.exe verified the dll was registered, so I ran the NUnit tests… same error! The solution is to permit the IIS7 App Pool to run 32 bit code as shown below:

IIS7 COM Gotcha

IIS7 COM Gotcha