Don't use Paragon ExtFS for OSX with El Capitan.The port is very experimental despite the fact that Paragon claims support for El Capitan.
I've damaged two times a 1.5TB ext4 filesystem beyond irreparable limits, using two independent installations of EL Capitan (10.11.3) on a MacBook Pro and MacBook Air. fsck -y /dev/sda(x)fsck -y /dev/sda(x)
on an linux box after file transfer completed is claiming hundreds of thousands multiply-claimed blocks with several files and directories - filesytem gone!
ExtFs is also not implemented in DiskUtilty in Ela Capitan so you can't check the integrity of your filesystem nor format in ext2/3/4...
Paragon Guys please fix your software urgently! Your claim supporting El Capitan is very much misleading!
In Summary dump Paragon ExtFS with OSX 10.11.x and not waste your $20 or wind back to Yosemite or earlier OSX's. Alternatively put a Linux Box on your GB network and copy through SMB. ItsIt's safer....