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I got an error 17 after re-partitioning. I can't guarantee that this is the case on yours but mine was because the number of the partition with ubuntu on changed becasue of the partitioning (according to the info I read error 17 means it can't find the operating system). Because the number of the partition was different grub couldn't find it's menu.lst etc.<BR>
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I booted up puppy linux and managed to fix it by re-installing grub on the HD (from in puppy) and (also in puppy) changing the menu.lst to relfect ubuntu's new location.<BR>
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As I say, can't guarantee it will work for you, but it did when I got error 17.
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