hi everybody i already filled a support request for the following, but i just wanted to share it here as it migth be an obstacle for others as well: if i mount a drive with ext4, the mount options are not handled corrected. it looks like this on my system: Code: martins-mbp:~ mdr$ mount /dev/disk0s2 on / (hfs, local, journaled) devfs on /dev (devfs, local, nobrowse) /dev/disk0s4 on /Volumes/Untitled (ufsd_ExtFS, local, noowners) /dev/disk0s5 on /store (ufsd_ExtFS, local, noowners) /dev/disk0s6 on /Volumes/home (ufsd_ExtFS, local, noowners) map -hosts on /net (autofs, nosuid, automounted, nobrowse) map auto_home on /home (autofs, automounted, nobrowse) /dev/disk1s3 on /Volumes/metaworx 1TB (hfs, local, nodev, nosuid, journaled, noowners) while /dev/disk0s4 and /dev/disk0s6 are automounted by OSX/ExtFS, the partition on /dev/disk0s5 is mounted at system-start: Code: martins-mbp:~ mdr$ cat /etc/fstab # # Warning - this file should only be modified with vifs(8) # # Failure to do so is unsupported and may be destructive. # LABEL=store /store ufsd_ExtFS local,noatime #LABEL=home /Users ufsd_ExtFS rw,auto but it acutally makes no difference if the volume is mounted by the system automagically, during boot by fstab or manually with "mount -t ufsd_ExtFS -o xxxx /dev/disk0sX /mnt": the options are in any case ignored and standard option set is applied: "ufsd_ExtFS, local, noowners". now sepcfically the last option is no good, as the owners of the underlying filesystem should definitifly be concidere (specially if you have your home directory on on of the ext4-partitions in order to shar it with linux!). also tha noatime would be relevant - in case ExtFS is actually updating atime ... is there a way to make ExtFS to respect mount options or at least respecting the owners-flag? best regards, martin rüegg.