Hello everyone, I have a computer with 3 operating systems: Mac OS X Lion, Windows 7, and Linux, in the order of where their partitions are located in my hard disk. Last week I reinstalled / upgraded Linux (Linux Mint, similar to Ubuntu) and now I can't boot into Mac OS X! The Apple logo and spinner appear but the OS never boots up, even after an hour. I'm not sure if it's because when I reinstalled Linux, I installed GRUB2 (the most popular Linux boot loader) into space reserved for the recovery partition, or because I deleted the tiny partition between OS X and Windows. Here's my current partition list: EFI (FAT32) 200.00 MB Macintosh HD (HFS+) 74.50 GB UNALLOCATED 129.91 MB BOOTCAMP (NTFS) 66.55 GB Data (NTFS) 311.57 GB Linux (ext4) 11.87 GB LINUX-SWAP 977.00 MB UNALLOCATED 1.02 MB What should I do? I would prefer not to have to format my hard disk. I have at my disposal an OS X Snow Leopard DVD, a Linux DVD, and a Windows 7 DVD.