When I invoke 'System Monitor' under the file systems tab it shows:
/dev/loop0 /KNOPPIX-DATA ext2 528.4 MB 125.8 MB 402.6 MB 76%
The used value of 402.6 MB (76%) has gradually gone up from minimal when Knoppix was first (Poor man) installed until now and I do not know why. I have not knowingly added anything apart from preferences I might make in various programs. My main usage is the Chrome browser. At the end of each session I clear browsing data and any downloads are moved to physical disk space and deleted from the downloads directory.
This figure is now too high and I want to reduce it by removing stuff that is not necessary. I thought I would use File manager for that so fired up PCManFM and looked at the /KNOPPIX-DATA directory and sub directories. There did not look much there at all. I looked at the properties of /KNOPPIX-DATA and the total size of files is 82.7 MB. I thought I would have a look inside the knoppix-data.img file by using another linux to extract the files from it. Again the files extracted came to a size of ~80+ MB.
So what is the other 319.9 MB used for and where is it so I can delete what is unnecessary!
Cisco ASA 5516-X Adaptive Security Firewall Appliance Network Device
$249.99
Palo Alto PA-220 Next Generation Firewall Appliance w/ Power Adapter and Cord
$59.99
Fortinet FortiGate 60F | 10 Gbps Firewall Network Security EXPIRED (FG-60F)- New
$226.79
Tested Working USG Ubiquiti Security Gateway UniFi Firewall With power Cable
$49.99
Cisco ASA5506-K9 ASA 5506-X Network Security Firewall
$40.00
Dell Sonicwall NSA 2600 8-Port Network Security 1RK29-0A9
$34.99
Fortinet FortiWiFi-60E Network Security Appliance - White
$38.40
Cisco Meraki MX84 Cloud Managed Security Firewall Appliance UNCLAIMED MX84-HW
$39.99
Fortinet Fortigate FG-61E Firewall Network Security Appliance ATP Bundle 1 years
$263.99
Palo Alto Networks PA-850 Firewall VPN Gateway w/ Rack Ears and Dual PSU
$194.99