Q: I made an NTFS partition with Disk Utility Tuxera and now OS X can't read my disk

do you have a windows computer (or boot camp partition) available to connect that drive to and see if it can be read?

did the drive work until it was taken off the TV and put back on the Mac?

at this point the more you use the disk or keep it connected to a computer without trying to rescue it the more problems could occur if reclaiming what you can of the previous data.

I have had good success with this

http://www.alsoft.com/DiskWarrior/

and this

https://www.prosofteng.com/datarescue-mac-data-recovery/

and while neither of these are 100% either is a data recovery service costing a far more.

Personally I would not trust a partition with different file formats, while in theory it should work fine I find theory and history to strongly contradict it. My advice is if you want a disk with NTFS to use with other system you should buy a dedicated external drive for it and not trust a smart TV or another device to try and look at or worse yet; manage other partitions on the disk.

The mac partitions are not mounted.

With the external connected, can you type the following in Terminal (in Utilities):

diskutil list

and display the list it produces here?

not ones I personally found to work as well as they do, but I work in IT, these were purchased for me otherwise I agree it's cost prohibitive to the average consumer - until you suddenly find yourself having to price a data recovery service.

Have you tried with these steps?

Resolve startup issues and perform disk maintenance with Disk Utility and fsck - Apple Support

and

Using Disk Utility to verify or repair disks - Apple Support

So there is nothing wrong with the formats and the disk, all there.

I propose you try two different approaches:

1. normally it is best when you have a dedicated TM disk, no other partitions, and it should be 1 partition GUID partition table, Mac OS Extended (journaled), that is how I always do it.

2. install the NTFS-3G or the paid Tuxeira NTFS driver in your mac and see if that changes the issue that the Mac Partitions will not mount.

If I must make the decision, I choose 1.

Then I would have a second disk with only NTFS and a thrird disk for other backups.

You know: when something goes wrong in a partition on a disk with more partitions, the TM partition most of the time will have issues if alive at all.

Lex

Great, solved.

PS: I have the impression that the FirstAid tab in Diskutility ElCapitan, does the same: repair permissions and repair disk in one action. I am not sure Apple should explain clearly.

Lex

Indeed, more than a few people miss the DiskUtility of Yosemite and earlier !