Hard drive recognition

[jon1924]

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.
John

[unkamunka]

....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 ....

Can you confirm that this is in Disk Management in the Computer Management applet in the Admin Tools subfolder of Control Panel. Or is this in Windows Explorer?

[bbearren]

By what means were the two drives formatted?

[jon1924]

Thanks for getting back to me. Managed to resolve the prob by going into disc management, right clicking the non allocated drive and selectling simple drive volume, a wizard appears and by following it through it eventually formats the drive and returns it to full usable volume.
Many thanks John Irving