Eesxicli cd can't cd to /vmfs/volumes/datastore1

Hello

I have a single ESXi 5.5 server that needs a security patch. I have uploaded the patch onto the local datastore and want to install it via CLI. I have followed VMware's instructions on this but I get stuck at check the directory. cd can't cd to /vmfs/volumes/datastore1

I can get to /vmfs/volumes but not any further down the directory, I was thinking it might be a permissions issue? I'm not a Linux expert tbh.

I would use VUM but we have been having issues so I just need it quickly updated via the CLI, any help would be appreciated.

Thanks