External hard drive turned to read only when I installed Os X el capitan

You likely had some third party app running that allowed use of an NTFS drive. OSX regardless of version can not write to NTFS formatted drives without you installing a third party app.

i have some problem here,can't drag any file to my hard drive,any ideas can help me out here?

Same problem for me. Cannot drop files into USB drive.

If your harddrive is formatted into NTFS it will work with any windows PC. Best plan of action is to get a windows PC. drop all your files from the external HD onto your C drive. Then reformat your external harddrive to ExFAT (this is a format that both mac and windows can read and allows for the transfer of files larger that 4gb). Then you can relocate all the stuff back on the external harddrive and use that for your mac.

I had this exact same problem after upgrading to El Capitan. What did it for me was installing the latest Paragon NTFS for Mac (v. 14). I used this one, but I don't know works for other brands than Seagte, but give it a try: http://www.seagate.com/gb/en/support/downloads/item/ntfs-driver-for-mac-os-maste r-dl/

thanks,very helpful.

Thanks Tim! Fixed my issue! Appreciate the advice

Perfect. Thanks for the solution, garsag!

This helped me!! Thanks for sharing this. I have a 5tb Seagate drive that I just got set up last week. When I upgraded to El Captian I couldn't write, only read. I was pretty upset thinking I was going to have to wipe it and start all over! Again, thanks for sharing post!http://www.seagate.com/gb/en/support/downloads/item/ntfs-driver-for-mac-os-maste r-dl/

I had the same problem after upgrading to El Capitan. In my case it was simply that the permissions had been changed so that I only had Read Only access to my external drives. I simply unlocked the little padlock on the Get Info screen for the drives in question, changed my permissions to Read/Write and everything was fine again.

I get the impression from reading various posts that people automatically think this is some sort of NTFS issue, but it could be simpler than that!

try

http://www.tuxera.com/

Hi, I've downloaded Paragon from your link, and I'm still having an issue after installing and restarting. Is there anything else I need to do? I "Get Info" and it still is on Read Only with no option to change to Read/Write. Please help. Thanks!

You my friend are a life saver!!!

Hi Neil, I have the same problem, but my locked icon is gray out and unable to change it. Any suggestions?.