I recently decided to make my Bootcamp (Windows 7) partition smaller, using Paragon Camptune X. This appears to have worked, as my Mac OS X partition gained 25GB, and my Windows partition appears to have lost 25GB. However, I can no longer boot into Windows. When I press Option & enter my firmware password, I still see all three options: OS X, Windows, and Recovery 10.10. However, if I select Windows, I get a rapid succession of command line text (much too fast to read), followed by this text: Code: drive 0x80 (LBA): C/H/S=1023/16/63, Sector Count/Size=1031184/512 Options if your HDD is larger than 1TB: * Move your boot files to a smaller partition at the start of the HDD. * Format the HDD and allow Windows to create a 100MB boot partition. * Shrink and move your partitions with GParted. Press any key to read more... --- Options if you have an OEM/Recovery partition: * Format the whole HDD with Active@ Kill Disk. * If possible use EasyBCD to relocate the boot files. Tools to use: * EasyBCD to move your boot files. * Active@ Kill Disk (ISO) to format. * GParted to resize, move & create partitions. How to boot back into Windows: * Boot from your Windows DVD and select "Repair your computer" * Select Command Prompt * Enter "bootsect /nt60 SYS /force" or "bootsect /nt60 ALL /force" * Reboot Press any key to enter command line... This is followed by a Grub command line. The boot command won't work, as the kernel isn't loaded of course. I am fairly knowledgeable with computers, but bootloaders are an area where I know next to nothing. I know that my Windows partition is perfectly in tact, as I can browse the partition from Mac OS X using Paragon NTFS. However, my bootloader is apparently broken, and being as that I have a rMBP without a DVD drive (I used an ISO to install Windows), I'm not sure how to proceed. Any help would be hugely appreciated.