Hi, in the past I used Partition Magic to partition the drive in a laptop to allow dual boot of Windows and Linux. The software worked all the time. I could also adjust the size of the partition by moving a slider. The software showed the picture. After making several adjustment commands, the software gave me a visual look on how the drive would be like and I just pressed one button to have the commands executed. If I did not like the partitions, I could remove them easily and the drive returned to original state. Unfortunately, this software is not longer available. Any good ones that have the features I mentioned, simple and reliable to use?