Thank you, joslb, .wise advice ...that's probably what I'm going to do...unless someone comes up with a solution....
Use sudo to mount them and to umount them, or even to execute your favourite program (if that´s what you want), and don´t worry more. But if I were you I would delete that instalation and I´d install another gnu/linux in your hd.
Thank you, joslb, .wise advice ...that's probably what I'm going to do...unless someone comes up with a solution....
The problem with hd instalation in knoppix is that it uses diifferent sources and if you want to update/upgrade your system or apply security patches you will be in trouble and your knoppix will be a disaster. That's why I told you to install another gnu/linux operative system in hd. It's very easy. Ubuntu for example can be downloaded and use it as a live cd with the option to install directly in your computer, even if you already have windows in it, it's automatic, easy and your gnu/linux will be always updated/upgraded. If your computer is not a new model or you have few ram memory then download xubuntu, I normally use it and it's great. I only use knoppix in a read-only pendrive (it has a switch to change to read-only or not), with "knoppix forensic" option to avoid writing in other pendrives or hds in my computer and to avoid malware in every boot.
Dank unbekannterweise an das Knoppix Team...Problem solved with Knoppix 7.7.1
DELL PowerEdge R730XD Server 2x E5-2680v3 2.5GHz =24 Cores 32GB H730 4xRJ45
$271.00
Dell PowerEdge R730 2x E5-2699V3 2.3Ghz 36 Core 128GB RAM H730 X520-I350 2x750W
$329.99
DELL R630 SERVER 8 x 2.5'' 2X E5-2680V4 32GB RAM IDRAC ENT & NDC 2X 495W PSU
$174.95
Dell Poweredge R630 Server 2x E5-2620 V4 =16 Cores | S130 | 32GB RAM | 2x trays
$159.99
Dell PowerEdge R630 Server 2x E5-2640v3 2.60Ghz 16-Core 64GB H330
$182.65
Dell PowerEdge R720xd 26HDD 300gb 2.5-inch E5-2697 X 2CPU 384RAM 7.2 Tb HDD 
$180.00
Dell PowerEdge R710 2.5" 2U Server 2x X5670 2.93GHZ 12-Core 128gb 2x 1TB SAS
$114.99
Dell PowerEdge R730XD 28 Core Server 2X Xeon E5-2680 V4 H730 128GB RAM No HDD
$389.99
Dell PowerEdge T420 2x Xeon E5-2430 V2 2.50GHZ 32GB DDR3-1600MHZ 2x 550W PSU
$149.95
Dell Poweredge R630 2x Xeon E5-2680 v4 2.4ghz 28-Cores / 128gb / H330 / 2x 1TB
$334.99