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7.8. What does the "-s" option to dismount do?




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This article is from the 3b1 computers FAQ, by John B. Bunch with numerous contributions by others.

7.8. What does the "-s" option to dismount do?

It should never be used. It's an historical option (as the manual notes), used to un-mount the "Syquest" external drive. This unfortunately causes the first hard disk to RECAL if you don't have the second disk upgrade. With the second disk upgrade it improperly un-mounts all the filesystems, apparently not handling the /etc/mnttab file correctly for all the partitions on the second disk.

In many people's opinions, it's much safer to use multiple /etc/umount commands to unmount multiple partitions. This works for all cases, and there is no second guessing on what the command is actually doing. If you want to mimic the operation of dismount, you can easily issue the "sync" command before the "umount" command. As far as clearing the "pulled-flag" as the manual indicates, many have never had any problem just using the /etc/umount command (on floppies as well as my other partitions and hard disk)

 

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