IInd Hard Disk Mounting Problem on 1st HDD On SCO UNIX Open Server

Hi Engg. ! :mad:
I have a harddisk on which SCO UNIX Open Server was installed. There was some data (in .dbf format) on it. Present condition of HDD is that it is not booting. Now I want to mount this HDD through other HDD on which SCO UNIX Open Server is installed by attaching first HDD as secondary disk, but I can'nt resolve it. Please let me know the way (syntax) to mount 1st HDD on 2nd HDD. 1st and 2nd HDD is of IDE. Is there any other method to extract data from 1st HDD. The condition of HDD is healthy.

From, Niraj Gopal Sharan