Paragon's ExtFS works very well on my iMac. I copied an Ext 3 FS to a portable disk drive. It's been siting on a shelf for two years. I bought and installed ExtFS ($29.99 as part of a MacUpdate Package). It works great! On the portable disk drive there are two volumes and both mounted automatically. The boot drive mounted as "/Volumes/:boot1" and the root drive mounted as "/Volumes/:". umount and mount commands work like the linux commands that I'm used to: sudo umount /dev/disk1s3 sudo fsck_ufsd_Extfs -n /dev/disk1s3 sudo mount_ufsd_ExtFS /dev/disk1s3 /Volumes/dell490 the last command does work but it doesn't survive logging out I read somewhere that the mount point is taken from the volume name on the portable drive. This is not such a big deal but I have to refer to files as /Volume/\: