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I set up a dual-boot with Windows 7 and Ubuntu Server 11.10. Everything works fine until I boot into Windows. After booting into Windows, the machine reboots when I select Linux from the grub menu. However, Windows continues to operate normally.

The system has two 500GB SATA hard disks and a 42GB IDE hard disk. The first SATA HDD contains Windows, the second SATA HDD contains my personal files (NTFS), and the IDE HDD contains Linux.

I have reinstalled Linux several times and it continues to have the same problem. During setup, I selected Use the entire disk and setup LVM and installed grub to the MBR of the IDE disk. I had another system previously that worked well with this configuration.

Could it be that Windows is causing problems with grub, or is it that I have mixed SATA and IDE HDDs, or something else?

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Do you have ubuntu automatically mount the windows partitions? If you put windows to sleep instead of shutting it down, it can sometimes cause issues (though it's never refused to boot for me because of that) –  Rob Feb 2 '12 at 15:10
    
It was shut down completely –  ctype.h Feb 2 '12 at 15:16

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