GRUB installed on /dev/sda1, "no such partition" after image restoration

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http://askubuntu.com – My partition setup is: [TrueCrypt'd Win7] [Ubuntu] [extended [logical partition]] (in that exact order) The bootloader installed in the MBR is TrueCrypt's. I use the option to of pressing ESC to alternatively boot Ubuntu via GRUB installed on /dev/sda1. This setup has always worked for me, but after upgrading my hard drive, I can't seem to restore GRUB to a working state. I upgraded by restoring recent backup images to the drive (this has worked for me in the past) But, this time, I just get: Error: no such partition. Grub rescue> I can boot the Ubuntu installation with this at the (HowTos)