I had tried to install Ubuntu 10.10 near a Windows7 in a 64 system. The installation was suppose to be 512Gb left for Win and 512Gb for Ubuntu. The installation hanged and on restart windows sees only his 512 partition. When I try again to install Ubuntu I only see the windows partition.
How can I recover the lost partition and install Ubuntu there?
Try installing this software 'PARAGON PARTITION SERVER' and scan this hdd and see if it sees the other partition, if that 512gb partition is seen format it in NFTS format