https://community.hpe.com/t5/operating-system-hp-ux/file-system/m-p/2528917#M24801 Try fsck,if you can't umount /usr,/var,etc. boot in single user mode. Wed, 16 May 2001 09:13:09 GMT Vincenzo Restuccia 2001-05-16T09:13:09Z https://community.hpe.com/t5/operating-system-hp-ux/file-system/m-p/2528915#M24799 Cannot umount file system...error Block device required Wed, 16 May 2001 06:38:20 GMT https://community.hpe.com/t5/operating-system-hp-ux/file-system/m-p/2528915#M24799 Hisham Ismail 2001-05-16T06:38:20Z https://community.hpe.com/t5/operating-system-hp-ux/file-system/m-p/2528916#M24800 <BR />Either there is an error in your /etc/fstab file or youre not trying to umount properly.<BR /><BR />eg. umount /SD_CDROM<BR />or umount /stand<BR /><BR />In your fstab file your entries should look like;<BR /><BR />/dev/vg00/lvol3 / vxfs delaylog 0 1<BR />/dev/vg00/lvol1 /stand hfs defaults 0 1<BR />/dev/vg00/lvol4 /tmp vxfs delaylog 0 2<BR />/dev/vg00/lvol5 /home vxfs delaylog 0 2<BR />/dev/vg00/lvol6 /opt vxfs delaylog 0 2<BR />/dev/vg00/lvol7 /usr vxfs delaylog 0 2<BR />/dev/vg00/lvol8 /var vxfs delaylog 0 2<BR /><BR />Thus if you now umount /home it will work fine. If instead your fstab file has the older /dev/... entries then ensure it says /dev/dsk/cxxxxx not /dev/rdsk.<BR /> Wed, 16 May 2001 07:03:42 GMT https://community.hpe.com/t5/operating-system-hp-ux/file-system/m-p/2528916#M24800 Stefan Farrelly 2001-05-16T07:03:42Z https://community.hpe.com/t5/operating-system-hp-ux/file-system/m-p/2528917#M24801 Try fsck,if you can't umount /usr,/var,etc. boot in single user mode. Wed, 16 May 2001 09:13:09 GMT https://community.hpe.com/t5/operating-system-hp-ux/file-system/m-p/2528917#M24801 Vincenzo Restuccia 2001-05-16T09:13:09Z