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  What should I do when Ubuntu freezes?  




I've just tried to install ubuntu 12.04 dual boot OS with Windows 7 and it finished installing in ubuntu. However, it said that the bootloader "grub.." failed to install. The same exact problem here I receive the error &#39;grub-install /dev/sda failed&#39; while attempting to install Ubuntu as the computer&#39;s only OS. . When I tried to restart my computer, it went to the hp screen since my computer is a dv6 hp laptop and then it goes into this black screen with no words or any buttons will work. There is just a blinking underscore that seems like it'll allow me to type but makes error sounds when I type. Is this because I possibly partitioned my memory incorrectly? Any help would be greatly appreciated. I'm very desperate. ANY HELP would be great. Thanks.

UPDATE:

I gave up and just reformatted my whole comp. I'm sure there was a better way to do it by either booting it up by the live usb with the ubuntu OS and try to reinstall grub loader. 


Question: How are Class Extensions associated with a Feature Class in ArcGIS v10?
Answer: Can't you check the DEFINITION XML field in the SDE.GDB_ITEMS table to see which EXTCLSID it uses to manage the objects in the table?

Example:  TRANSFORMER

&lt;EXTCLSID&gt;{91BC9A23-B210-4EE5-B524-93BCD640E58D}&lt;/EXTCLSID&gt;