Server cd not recognised

[artisan]

I am trying to install ubuntu server on my second drive.
I have downloaded both the amd64 version and the i386 version, then burned them to cd.
Neither cd will boot. I have tried cd-r and cd-rw and different versions.

When booting an ubuntu live cd there are no problems. But, when I try to boot a server edition the computer will only boot top the HDs.

Any suggestions gratefully received.

[kpkeerthi]

Check the MD5sum of the ISO. Also try burning at a speed not greater than 4x.

[StGeorge]

Same problem here.
Checked the above.
MD5 ok.
Burning speed correct.
Just boots into the XP installation.

[artisan]

md5 checksum is fine as far as I can determine.
Both of the download and on the cd.

[artisan]

The md5 sums are fine on 3 different cds does anyone have any other suggestions?:(

[artisan]

Shameless bump.

I now have 3 cds with Ubuntu server 9.04 both the amd64 version and the i386 version

Check sums seem fine. Cannot boot any of them.
If i use a Ubuntu live cd there is no problem.
So the comp and the drive are fine. It seems to be an issue I cannot track down.


Any suggestions?

[artisan]

Bump
is that it from the community?:(
Check your MD5?

I just tried again.


I burned another cd. Using K3B the slowest it will burn a data cd is x10
But surely in this day and age x10 should be slow enough.

The MD5 checks out on the download and on the cd.

But when I try to boot from cd my system will not see the cd drive, when trying to install Ubuntu server.
Like I say an ubuntu live dvd is no problem.

Does anyone have any suggestions besides MD5?