Hello all,

I have been using ubuntu 10.10 32 bit. I thought of giving 64 bit a try. I downloaded the ubuntu-10.10-desktop-amd64 from the ubuntu website and burned it in to a cd. Then i boot from cd. But unfortuntely i am getting terminal instead of installtion or try options. It says : General errormounting filesystem" and then Lots of " Authentication failure". I typed startx in the terminal but i didnt get any gui.

I am using hp dv6 laptop with windows 7 preinstalled. Core i5 processer, nvidia g105m graphics card and 4gb ram. Ubuntu 10.10 32 bit works fine.
I don't know the whether the problem is because of my graphics card. But it works fine for me in 32 bit. The driver i am using is of version 260.19..06. Please somebody help me. I really want to use 64 bit OS.

Did you do a md5sum check on the file before you burned it? It could also be a bad burn, or even bad media.

Will that CD boot on another system?

The graphics card is very unlikely to be a factor.

The most likely cause is a bad download of the .iso file, which is why camorri said:

That would tell you one way or the other for certain whether it was a bad download.

That is also a strong possibility, but harder to definitely rule in or out.

But that is a pretty good test of whether the CD is good (encompassing good download, good burn and good media together).

If the CD is good, but you still get the reported symptoms, that hints at some 64 bit specific bug in some driver code specific to your model of CD drive (32 bit works for you and 64 bit works for many other people). That isn't impossible, but it is very unlikely.