I have a hard drive with 2 partitions on it. I made these partitions in disk utility. One was for time machine, and one was for my normal files that my macbook air couldn't hold. My new router has a NAS option that doesn't support partitions. I want to delete the backup partition and have a single partition. To do this, I wanted to delete the backup partition and resize the other partition to the full size of the drive. When I try to do this, it says "this partition can't be modified." I can't delete or resize a partition. What am I doing wrong? Is there anyway to fix this?