Cannot access Boot Camp partition after OS X reinstall I've already used Boot Camp to install Windows on my computer. A while back I had to erase my hard drive and reinstall Mavericks. Once I did that my Windows portion still exist as a volume, but when I got to my Start Up Disk settings it's a folder and not a disk. 

I have a lot of my music I created with sound effects and sound kits in FL Studios on that side I don't want to lose. 

Do I have to erase and reinstall Windows using Boot Camp or can I fix that issue by creating another bootable disk for my Windows?
Neither of the suggested proposals is advisable. If you erase and reinstall Windows all the music will be lost. Creating a second bootable disk is a complex and error-prone task.

If the Windows volume really still exists you can access it in read-only mode and save your music to the OS X volume by default. If you also need write access install an appropriate tool like NTFS for Mac 14 or a free tool like NTFS-3G for Mac OS X.

You may also salvage the bootability of the Windows partition by adding appropriate MBR entries. Check for several questions and answers here at apple.stackexchange solving this issue.