[ubuntu] Vista missing from grub - Windows 7 not missing.

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http://ubuntuforums.org – Two (Vaio) laptops, Vista/Quantal on one, Windows 7/Quantal on the other, Quantal on both fully updated as of a few minutes ago. Both have Windows recovery partitions on sda1 and boot into Windows itself from sda2. (7 has the usual separate small boot partition on sda2). Apart from Quantal, the grub menu on the Vista machine only has an entry for the recovery partition, not for Vista itself. The W7 Machine still has entries for both the recovery partition and for Windows. The Vista machine did have a grub option for Windows a few days ago, but I can't recall when it disappeared. There was a (Hardware)