exFAT mounting problem

where did you get this information?

Good to know but I wish I had known sooner. I've been formatting to exFAT for a while assuming that everything would be Mac/Windows compatible. In fact that's the only reason I have been formatting exFAT and now I find out it has to be formatted exFAT to a specific cluster size! I'm using Parallels to run Windows 7 to access my exFAT drive in Mac OS as a workaround because moving all my files off my 6TB drive so I can re-format to 1024 cluster size and move them all back again isn't feasible at the moment.

Does the same apply for LG TVs? I tried inserting an exFAT-formatted thumb drive into an LG TV's USB port and it wouldn't read it, so my conclusion at the time was that it was because they were only FAT32 compatible but now I wonder...

You da man! That was it. Thanks for the info.

Perfect thanks. I got it working too with 1024, had issues with 4096 cluster size.

Thanks for the link. Hopefully Apple will improve exFAT soon.

I have a 3TB USB drive and want to use with Mac and Windows, exFAT was the only real option.

NTFS can be used with Mac, but not with all Macs as requires that plugin installed. Where as exFAT can be used with any 10.6.5 Macs which is perfect.

Thanks so much for the solution.

Hi, i have a similar problem only using USB 3.0 with external hard drive although Disk Utility won't recognise this drive. Disk was formated in exFAT, 1024 cluster size. Works fine on Win7 through USB 3.0 and USB 2.0 port.

Tried pretty much everything. Is there any chance to make this external drive and mac combination work?

Thanks, Nino!

Thanks to the guy; aixxo I also resolved this issue.

Once again; if you're formatting the drive in Windows to ExFAT you need to change the clustersize to: 1024 to get it visible in your OS X.

I couldn't find anything to back your theory up but I tried it and it completely solved my problem! Thanks! and for any other PC to Mac converts out there - if you have an NTSF external HD and want to make it exFAT compatible for both your PC *AND* Mac, just do what this man says lol

I am runing Mavericks and I tried formating one drive in Exfat and a USB 3 thumb drive and both of them when I try to copy large files on them they crash while in the middle of the transfer and it unmounts the drive and says the drive was not ejected properly. Then When I unplug the drive and plug it back some times the drive wont event show up in finder. I can see it in Disk utility but it looks as if the partition has gone. Some times the only way to reuse it is to format it again i Exfat, but then the problem happens again. Has anyone had this problem in Mavericks. I am using a Macbook pro retina display upgraded model late 2013.

I have this problem too. I use macbook air 2013. When eject my usb hard disk not correctly . Disk didn't mount for my mac

Format to cluster 1024. I was having the same problems to and formatting exFAT to cluster 1024 resolved it.