On a OS X 10.10.5 system, my ExtFS (v 9.7.109) partition cannot be unmounted, unless forced. When the unmount fails, the following shows up in the system log: 9/18/15 12:23:27.532 Disk Utility[389]: Unmount of disk0s3 blocked by dissenter PID=0 (unknown) status=0x0000c010 log=unknown message=(null) I'm not sure when it stopped working. I do not think it is the first time I've tried it since the 10.10.5, but I can't be sure. I've tried uninstall/reinstall of ExtFS, but no effect. It becomes an issue when I use VMware Fusion to run the partition in a VM. Fusion used to be able to unmount the volume automatically so it could use the partition directly, remounting it when done, but not anymore. I also have a NTFS WIndows partition that I use as a VM, also usually mounted with Paragon NTFS for OS X (v. 12.2.213), and that unmounts fine. Thanks for any help.
Well, that was embarrassing. I did what I should have done in the first place. After force unmounting the ExtFS partition, I ran Verify Disk in Disk Utility, and there were errors. So I booted the partition natively in Linux recovery mode, ran fsck to fix the problems, booted back into OS X, and now it unmounts and mounts fine! Stupid me. I suspect that the problem may be something I've observed in Fusion, when I use the Fusion menu to shutdown the VM. Only with this Linux ExtFS partition it shuts down "too quickly", and I suspect it's behaving more like a power off than a shut down. From now own I'll use the Linux interface to shut down the VM. I don't think the issue is ExtFS-related at all. Sorry. Move along. Nothing to see here.
Not at all ! The act of writing out a problem often results in viewing it with a "fresh pair of eyes " BTW , welcome to Wilders
there's a new version of Paragon ExtFS posted. confirmed it works with El Capitan https://www.paragon-software.com/home/extfs-mac/download.html
