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I was running Windows 7 on a desktop computer for 2 years. Yesterday, I had to reinstall Windows. I installed Windows XP SP3, since I had issues with the Windows 7 license.

Windows XP installed properly, but after the installation, I found that it is not showing 3 partitions of my hard disk, which are logical partitions created in Windows 7.

I had a total of 7 partitions in Windows 7 created by third party tools. However, Windows XP is showing unpartitioned space of 171 GB out of the total 320 GB.

I searched the internet, and I found some information suggesting that this might be happening due to uninstalled SATA drivers.

How can I recover my partitions?

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-1 although you might be freaking out, please rework your question to be more reader friendly (and I am not talking about maybe not-so-good english) – Baarn Apr 11 '12 at 15:05
Windows XP does not support the dynamic disk you created. You are going to have to install Windows 7, besides, you cannot upgrade to Windows 7 from XP. – Ramhound Apr 11 '12 at 15:39

Try booting with a Linux CD. If you can see your files there, plug in an USB disk and copy your files to it. Next time, do this before you reinstall operating systems.

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The partition table written with Windows 7 is most likely the GPT type, which Windows XP (32bit) does not support. It is known that XP will show GPT-partitioned space as one large partition with no logical volumes.

An option would be to install Windows XP 64-bit edition (if your CPU supports that). It works with 32bit XP serial keys just fine, and does support GPT partitions.

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Do you have a source for that? – Burgi Apr 27 at 14:49

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