Carl said:
Good morning all and Happy New Years
What is the difference between these 2 operating systems, If i go to WalMart
and buy XP Home upgrade or XP Home OEM ?
Is the upgrade Bootable to?
Thanks.
The WinXP Home Upgrade CD is bootable. It does have a prerequisite,
however. You must own a license for one of the earlier qualifying
operating systems listed on the box, and that license must permanently
dedicated to, and either be already installed upon, or at least
installed nowhere else, the machine that you intend to upgrade. If you
used an Upgrade version of WinXP Home, the license for the earlier,
qualifying OS will be subsumed (become an integral part of) by the WinXP
Home Upgrade license. Basically, you have no license to use the
Upgrade without there first being an earlier, qualifying OS license
_permanently_ in place on the computer, and that qualifying license
cannot subsequently be used anywhere else. For more information:
Upgrading to WinXP from Previous Versions of Windows
http://www.microsoft.com/windowsxp/home/howtobuy/upgrading/matrix.asp
OEM licenses are "Full" versions, meaning that no earlier OS need be
present to perform an installation. There are some very important
reasons that an OEM license costs so much less than a retail license.
OEM licenses are very limited:
1) OEM versions must be sold with a piece of non-peripheral
hardware (normally a motherboard or hard drive, if not an entire PC,
although Microsoft has greatly relaxed the hardware criteria for WinXP)
and are _permanently_ bound to the first PC on which they are installed.
An OEM license, once installed, is not legally transferable to another
computer under any circumstances. This is the main reason some people
avoid OEM versions; if the PC dies or is otherwise disposed of (even
stolen), you cannot re-use your OEM license on a new PC. The only
legitimate way to transfer the ownership of an OEM license is to
transfer ownership of the entire PC.
2) Microsoft provides no free support for OEM versions. If you
have any problems that require outside assistance, your only recourse is
to contact the manufacturer/builder of the PC or the vendor of the OEM
license. This would include such issues as lost a Product Key or
replacing damaged installation media. (Microsoft does make allowances
for those instances when you can prove that the OEM has gone out of
business.) This doesn't mean that you can't download patches and
service packs from Microsoft -- just no free telephone or email support
for problems with the OS.
3) An OEM CD cannot be used to perform an upgrade of an earlier
OS, as it was designed to be installed _only_ upon an empty hard drive.
It can still be used to perform a repair installation (a.k.a. an
in-place upgrade) of an existing WinXP installation.
4) If the OEM CD was designed by a specific manufacturer, such as
eMachines, Sony, Dell, Gateway, etc., it will most likely only install
on the same brand of PC, as an additional anti-piracy feature. Further,
such CDs are severely customized to contain only the minimum of device
drivers, and a lot of extra nonsense, that the manufacturer feels
necessary for the specific model of PC for which the CD was designed.
(To be honest, such CDs should _not_ be available on the open market;
but, if you're shopping someplace on-line like eBay, swap meets, or
computer fairs, there's often no telling what you're buying until it's
too late.) The "generic" OEM CDs, such as are manufactured by Microsoft
and sold to small systems builders, don't have this particular problem,
though, and are pretty much the same as their retail counterparts, apart
from the licensing, support, and upgrading restrictions.
--
Bruce Chambers
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