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I have a hardware RAID 1 which seems to be recognized find by the Ubuntu installer. I choose the "Entire Disk - Guided" partition strategy and accept the defaults, writing them to disk. When it comes to choosing where to put Grub2, however, everything I try fails. Any advice would be awesome.

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Drop to shell and extend your question with errors from the /var/log/syslog. – Roman B. Jul 31 '12 at 11:15
Does your server happen to have something like a FC (Fibre Channel) card installed so your server sees some additional LUNs / drives there? If that's the case, Debian/Ubuntu installer can sometimes get confused and try to install GRUB to those SAN drives instead of the drives you originally planned... – Janne Pikkarainen Jul 31 '12 at 11:28
No, it has 2 x 160gb and 2 x 320gb. Each pair is in a hardware RAID 1. I am trying to install on the 160gb pair, leaving the 320gb pair to format and mount after installation. – MFB Jul 31 '12 at 11:40
@RomanB. how do I drop to shell during install? – MFB Jul 31 '12 at 12:14
In Debian, there is Expert Install, there you can drop to shell. This might be in Ubuntu too. – Roman B. Jul 31 '12 at 12:30

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