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!
HP Workstation Z640 2x Xeon E5-2623V4 32GB Ram 2x 256GB SSD Quadro 2000 Linux GA
$249.99
HP Workstation Z640 2x Xeon E5-2623V4 32GB Ram Dual 256GB SSD K420 Linux GA
$214.98
DELL PRECISION 7510 | INTEL XEON E3-1505M V5 2.80GHZ | 256GB | 32GB | NO OS
$159.99
DELL PRECISION 7510 | INTEL XEON E3-1505M V5 2.80GHZ | 512GB | 32GB RAM | NO OS
$189.99
SR1XP Intel Xeon E5-2680 v3 12 Core 30MB 2.5GHz LGA 2011-3 Grade A Processor
$3.96
Genuine Intel Xeon E5-2680V4 2.40Ghz 14-Core 35MB LGA2011 CPU P/N: SR2N7
$14.99
Intel Xeon Gold 6140 SR3AX 2.3GHz 18-Core Processor CPU
$32.79
Intel Xeon E7-8890 V4 2.20GHz 24-Core 60MB LGA2011 Server CPU Processor SR2SS
$29.99
Apple MAC Pro A1481 Late 2013 Xeon Quad-Core 3.7GHz 32GB 1TB SSD FirePro D300
$285.00
Intel Xeon E5-2697 v4 2.3GHz 18-Core Processor CPU LGA2011 SR2JV
$49.99