hoi. kenne den fehler zwar nicht aber google spuckt so ziemlich viel darüber aus:
http://www.gentoo.org/doc/de/grub-error-guide.xml
dann hier auf englisch ein versuch wert:
Zitat1. Enter BIOS
2. Make sure all HDD's are detected.
* *Take note of (write down) the current settings just in case you need to set things back later**
3. Search for the HDD that has Ubuntu installed and set its MODE to AUTO (not LBA, large, or normal)
4. Also, if you have this option available, set TYPE to USER, but don't change any of the figures that were automatically detected.
5. And you are done!
Just in case this doesn't work, then:
6. Set all drives to TYPE --> USER and MODE --> AUTO (not LBA, large or normal)