harddisk changed from secondary to primary
 

initially when i installed fedora 2 on my hardisk it was not the primary one, the addresses of the partitions were like this
/dev/hdc10
/dev/hdc11
...
and now when i made the same hd the primary, fedora 2 is going into some unknown security mode whlle booting. and unable to mount some of its partitions. how can i retain the original configurations?

Put your hard drive back on the secondary IDE channel and boot from it. Edit the file "/etc/fstab" and replace all instances of "hdc" with "hda". Then shut down your computer and put the drive on the primary IDE channel.

I might be wrong, but guys will correct me if so.
as you said the partitions were
/dev/hdc10
/dev/hdc11
and now, when the disk is primary, it is /dev/hda
note, no longer hdC, but hdA.
probably that's why fedora acts so weird.

/edit
already answered. that's why I love this forum :)