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!
ALLEN BRADLEY 281G-F12S-10B-RRG-CBG /C AMORSTART MODULE 280G-FS-10-RG STK 2911
$332.50
AMD Ryzen 9 5950X 16-core 32-thread Desktop Processor
$319.99
Intel Core i5-8500 Six Core Desktop PC CPU Processor 3.00GHz LGA1151 SR3XE
$49.99
(1) Intel Core i7-4790 3.60GHz - SR1QF - Processor - CPU
$33.00
Intel Core i9-12900KF - 12th Gen Alder Lake 16-Core (8P+8E) 3.2GHz LGA CPU
$262.99
Intel Core i7-4790 3.60GHz Quad Core CPU Processor SR1QF LGA 1150 Socket
$32.99
Intel Core i5-13600KF - 13th Gen Raptor Lake 14-Core (6P+8E) 3.5GHz LGA CPU
$220.99
Intel Core i7-14700KF Unlocked Desktop Processor
$420.22
Intel Core i5-8500 3.00GHz SR3XE Socket 1151 6 Core CPU Processor
$55.00
Intel Xeon E5-2697 v2 2.7GHz 30M 12-Core LGA2011 CPU Processor SR19H
$29.99