Actually I have 2 HDD 1 is 160 GB IDE segate and another one is 250GB Samsung SATA HDD I was worked frequently ,but when I changed windows 7 to windows xps2 ,my SATA is not showed then I formatted an onther system then connected to my PC now also not showing in BIOS ,but in bios 1 hardisk showed 160Gb 2nd hard disk showed RAID Nvidia JOBD 232.88G ,pleas help me how cani detect my 250 gb hard disk I tried jumper setting changed in dvd drive but its not helped
WHAT I DO

Please clarify your question as it's all over the place and does really make much sense.