Change 2 Bytes and Windows XP Home becomes XP Professional

May 31 2005, 7:42am EST | by Luigi Lugmayr

German Computer magazine C'T (Heise) is describing in its current print issue how to change Windows XP Home to a Windows XP Professional version before install.

Microsoft is not going to like this. The C'T magazine apparently found out that by changing 2 bytes in the installation file of Windows XP Home, it will install a Windows Professional. Some functions are missing, but Remote Desktop and User management and enhanced security features are present.

I could not find write-up of the instructions online yet. C'Ts online site is not reporting about it - guess they want to maximize print magazine sales. The article is in the c't 12/05 on page 148. The hack requires several steps. The major change is in a registry file setupreg.hiv in the i386 folder. The article is 8 pages long, so I guess you have to get the magazine to get it right. Gizmodo has a summary of the instructions posted.

Story via silicon.de (German).

Microsoft Windows XP Professional Upgrade with Service Pack 2

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Luigi Lugmayr
Luigi is the founding chief Editor of I4U News and brings over 15 years experience in the technology field to the ever evolving and exciting world of gadgets. He started I4U News back in 2000 and evolved it into vibrant technology magazine.
Luigi can be contacted directly at ml@i4u.com. Luigi posts regularly on LuigiMe.com about his experience running I4U.