Have removed xp from my comp and installed win 7. Have 2 hard drives each with capacity of 250gb, after installing windows 7 the 2 drives now read 125gb, also the 2nd drive which was split into 4 partitions is now showing only 3 and these are indicating full when in fact there is no data on them. both drives were formatted prior to installing win 7.I have been into BIOS and both show 250gb. I also enabled them in BIOS but they still indicate as previously described. Any one had similiar experiences and if so how was the problem but right. This is not a BIOS problem, it is certainly a wind 7 problem. If any one out there can help it will be greatly appreciated.