While snooping around the stock init script, I spotted a variable, home, in the mountdata function standing out from the crowd. After doing some quick tests, the preliminary results are summarised as follows,
Prerequisite: The persistent overlay (.img, .aes or .inf) being on the same partition as the KNOPPIX file.
Functionality: Loading a specific persistent overlay at the boot time.
Usage: knoppix home=/mnt-system/foobar/dummy
*The dirname and basename cannot contain any whitespace characters.
*The basename needs to be unique if there are more than one overlay files in the same folder because the suffix cannot be part of the argument.
For Lenovo ideapad 5 15IIL05 15ARE05 15ITL05 15ALC05 Lcd Back Cover Rear Lid NEW
$49.98
NEW Palmrest Keyboard For Lenovo Thinkpad E15 Gen 2 20T8 20T9 Black 5M10W64513
$80.99
For Lenovo ideapad Flex 5 15IIL05 15ITL05 LCD Touch Screen Bezel 5D10S39643 New
$138.95
Lenovo 500w Gen 3 Laptop, 11.6" IPS Glass, N6000, 8GB, 128GB SSD, Win 11 Home
$186.99
Lenovo Ideapad 1i 15.6" FHD Notebook Intel Core i5-1235U 8GB RAM 256GB SSD
$339.99
Lenovo IP 5 16IAU7 16" 2.5K Chromebook i3-1215U 8GB Ram 128GB eMMC Chrome OS
$194.99
Lenovo Notebook IdeaPad 1 Laptop, N6000, 4GB, 128GB eMMC, Win 11 Home-Certified
$229.49
Lenovo ThinkPad Yoga 11e 11.6" 2in1 Touch Intel Core i3 4GB RAM 128GB SSD Win10
$59.00
~10th Gen~ 14" Lenovo i7 Quad Core Laptop: 16GB RAM 512GB SSD Windows 11 Pro
$359.99
Lenovo K14 AMD Laptop, 14" FHD IPS LED , Ryzen 5 5600U, 16GB, 256GB SSD
$569.00