What does "mount -e <device>" do?

**TL;DR**: What does mount -e do? Overview -------- Over ssh, mount commands are being sent by software that I need to maintain. Twice, the mount commands use an -e option. I don't know what -e is for and can't find a good enough answer. Details ------- In my case, the procedure that is doing this is named "Verify Backup OS" and the command being sent over ssh is the following: mount -e /dev/hd0; umount -f /dev/hd0t177.1; mount -e /dev/hd0; mount -tqnx6 /dev/hd0t177.1 /BackupPartition After doing that, the software then appears to do a search in /BackupPartition so I think that's where the "verify" part of the procedure name comes into play. Man output ---------- If I do man mount, the text for the command and for -e is: Usage: mount [-abwruv] -t type [-o options] [special] mntpoint mount [-abwruv] -T type [-o options] special [mntpoint] mount [-abwruv] -e [-t|T type] [-o options] special [mntpoint] mount … -e Enumerate the device given by special Product Documentation --------------------- On the QNX page for mount , it has -e Enumerate the children of the special device. By the description it would appear that the mount -e somehow enumerates the device in some capacity. I was expecting that to mean "prints out some data to stdout", but that doesn't make much sense in this case since the output is not visible to the software user and is not piped or redirected anywhere, and I tried the command manually on the command line where it produced no output and no sign that anything happened. **What does mount -e do?**