Unable to delelte file from rootfs

[ys173p]

I'm trying to delete file from rootfs: on NCS5500 but can't:

path outside filesystem disallowing access

any thought?

del rootfs:harddisk:6.3.3
Fri Jun 5 15:44:41.505 UTC
delete : /harddisk:6.3.3 : path outside filesystem disallowing access

[pieterh]

search docs on Unix/Linux mount command.

maybe it is a "mounted" filesystem and you need to dismount first before you can delete the  mount-point?