I have an iMac that I use at work for video editing. Some of the disk drives I use are external and formatted as NTFS. At one point or another long time ago this computer had installed both Tuxera NTFS and Paragon NTFS, not sure which one was actually active as it showed both on the preferences, but didn't check because it was working well (if it wasn't broken....) Yesterday I was working on the computer when the power went off (we're having energy problems here in Venezuela because of an extended drought), I just turned all the regulators off, unplugged everything just in case and went home. Today I turned on the computer and it can't mount the NTFS drive. The drive seems to be ok, I have two of them, both formatted as NTFS, both work perfectly on a windows machine, and neither one mounts in OSX. Some extra info: - I've tried uninstalling both tuxera and paragon and reinstalling one at a time, no difference. - The drive shows as greyed out in the disk utility (as if it was unmounted). I can verify and repair from there, but shows no errors. If I try to mount it just tells me that i cannot be mounted, to execute first aid and try again. - The computer is running OSX 10.9.4 - Formatting the disk is not an option for the time being. Any ideas?... it's kinda urgent, I have some work there that I should be finishing today. EDIT: just tried it on another computer, an old macbook running 10.6.8 with tuxera NTFS installed, works without a hitch, but no matter what I do the iMac can't see it. Help?