Any feedback on this please?
When using flash-knoppix to install knoppix on USB, first it asks whether you would like to create an overlay file and then, afterwards, it asks if you want to remaster knoppix.
What is the difference between the overlay and the remaster thing?
I always considered the overlay as a "simple" (but not actual) remaster.
What does knoppix do on the USB if you answer Yes to the remaster question please?
Thanks in advance.
Any feedback on this please?
I haven't tried that option, but in general, remastering means creating a new compressed image, while overlays are stacked compressed file system modifications relative to the rest of the stack.
So if you have a series of overlays, you might consider a remastering to collapse that stack and get better efficiency.
Thanks for your reply Capricorny. That is how I understand it as well.
However, at install time, whether you choose to Remaster or not, it still creates KNOPPIX2 as a stacked compressed file system and, as far as I know, there is no option (script?) in Knoppix to generate a remastered image. There was once a script by Werner P. Schulz to create a remastered image but now the website does not exist any more. It would be great if such script are integrated in the Live DVD since it would make remastering much easier.
What is going on, I think, is that a slightly more "advanced" form of remastering is done, where the cloop images are created subject to the 4GB filesize constraint. The overlays are collapsed, but two non-overlapping images are created. If your files are to reside on less restricted file systems, you don't need to care about that - unless there is some limits in cloop file creation. I mostly use a "knoppified" version of plain Debian now, and there squashfs is used. But the principle for remastering is exactly the same.
I think you should not let the lack of updated scripts stop you. There are several code snippets posted here through the years to work from.
Now I have tried the "remaster" option, and it seems to me that the new overlay KNOPPIX2 is simply created on top of KNOPPIX and KNOPPIX1. Which may seem like a nuisance if you have purged a lot of packages to make room for new programs, but isn't really too bad for most ordinary use cases. I use both standard Debian (live) and Knoppix, and while I will stick to the ordinary remastering procedure for Debian, I think this "shallow" remastering will suffice for my Knoppix use.
One of the real handy features of frequent remastering, is that the system may often be run without persistent store, which means, among other things, that errors or malware that is introduced will not survive the next reboot.
Fanxiang SSD 512GB 1TB 2TB 4TB 2.5''SATA III Internal Solid State Hard Drive LOT
$188.99
Netac 1TB 2TB 512GB Internal SSD 2.5'' SATA III 6Gb/s Solid State Drive lot
$109.99
SAMSUNG SSD 870 EVO 1TB 500GB 250GB 2.5 inch SATA III 3 Solid State Drive US
$97.99
Fanxiang SSD 4TB 2TB 1TB PS5 SSD M.2 NVME SSD 7300MBS PCIe 4.0 Solid State Drive
$237.49
Patriot P210 128GB 256GB 512GB 1TB 2TB 2.5" SATA 3 6GB/s Internal SSD PC/MAC Lot
$13.99
Crucial MX500 CT250MX500SSD1 250 GB SATA III 2.5 in Solid State Drive
$14.99
Micron RealSSD C400 2.5" 512GB SATA SSD Solid State Hard Drive MTFDDAK512MAM-1K1
$24.99
850 EVO 2TB SATA 6Gb/s 2.5" SSD MZ-75E2T0 Laptop PC Drive
$88.95
Fanxiang M.2 SATA SSD 2TB 1TB 512GB 256GB SSD Internal M2 Solid State Drive Lot
$109.99
Fanxiang SSD 512GB 1TB 2TB 4TB 2.5'' SSD SATA III Internal Solid State Drive lot
$104.99