My Windblows partition no longer visible in Ubuntu

[Krister Ekstrom]

>> /Krister totally clueless
>>
> run as root (after su - )
> 
> fdisk -l /dev/hda
> 
> cat /proc/partitions
This had an interesting effect. It turned out that all the partitions
were there, but they had changed name. Instead of "hda1", "hda3" etc
they were now called "sda1", "sda3" etc. Is this some kind of error and
what could one do to rectify the problem if it is a problem?
/Krister, just confused this time