error 0x8004240f

Hi,

When I installed Windows 7, I deleted one of my partitions (size 100Gb) and when I tried to make a new one I got the error "failed to create new partition 0x8004240f".

I finished successfully the installation but still can't see the 100Gb (just a small 40Gb drive).

When I tried using Disk Management, I got an error "not enough disk space" when tring to make new simple volume or delete partition (the partition colored green).

any suggestions??

Liat.

my computer is Dell Inspirion 1525.