When I did my first Knoppix remastering back in 2006, using chroot was in practice necessary. But returning to the kind of task a few years later, and following the methods outlined by other forum members here, I found that I didn't need it.
Chroot is important when a brand new OS version is created from scratch, for then there isn't anything to run yet. But I have found that as soon as I have a version able to run, it is much better working from that. And with easily configurable (in several parallel versions) persistent store, running the developing system in something like kvm is a very simple, robust and efficient way of applying and testing changes.
Working from Knoppix 7.6.1 (for example), I can run the ISO in kvm, use the flash installer to install Knoppix on the first partition of a USB SSD disk, and start creating alternatives by modifying the booting .cfg file there. When I then run (the external disk is identified as /dev/sdc)
I can use the booting alternatives in the syslinux file. I can even do remastering safely running from the image to be remastered, if I start without persistence. And after the first remastering, I will have all necessary tools in the cloop image, so it doesn't really matter for this use case whether I use persistence or not.Code:sudo kvm /dev/sdc -m 1024 &
Have I missed something important about chroot, as it doesn't seem to have much to offer for mye actual use?
I will need it for a knxbootstrap utility, but remastering is something quite different today.
Dell Precision T3600 XEON E5-1607 3.0GHz 16GB RAM 500GB HD WIN10 Pro Workstation
$99.00
Dell Poweredge R440 2x Xeon Silver 4110 SR3GH 32GB RAM No Drives Server
$349.99
HP Z2 Mini G3 Workstation Xeon E3-1225 V5 8GB RAM 256GB SSD Used No OS
$140.00
Dell PowerEdge R730 2x E5-2699V3 2.3Ghz 36 Core 128GB RAM H730 X520-I350 2x750W
$329.99
SR1XP Intel Xeon E5-2680 v3 12 Core 30MB 2.5GHz LGA 2011-3 Grade A Processor
$3.96
Intel Xeon E5-2697A V4 2.6GHz CPU Processor 16-Core Socket LGA2011 SR2K1
$37.99
Genuine Intel Xeon E5-2680V4 2.40Ghz 14-Core 35MB LGA2011 CPU P/N: SR2N7
$14.99
Intel Xeon E5-2690 v2 10-Core 3.0GHz 25M 8GTs LGA2011 Server CPU Processor SR1A5
$17.99
Dell Poweredge R730xd LFF 14-Bay 2U Server | Choose Your CPU & RAM Config
$474.99
Intel Xeon E5-2697 v4 2.3GHz 18-Core Processor CPU LGA2011 SR2JV
$49.99