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 PowerEdge R730XD Server 2x E5-2697v4 2.3GHz =36 Cores 64GB H730 4xRJ45
$407.00
DELL PowerEdge R630 8SFF Server 2x E5-2650v4 2.2GHz =24 Cores 32GB H730 4xRJ45
$240.00
DELL PowerEdge R630 8SFF Server 2x E5-2680v3 2.5GHz =24 Cores 32GB H730 4xRJ45
$230.00
Dell PowerEdge R710 2.5" 2U Server 2x X5670 2.93GHZ 12-Core 128gb 2x 1TB SAS
$114.99
Dell PowerEdge R620 Server 2x E5-2660 v2 2.2GHz 20 Cores 256GB RAM 1x 480GB SSD
$139.99
HP Proliant DL360 G9 2x2.6GHz Intel 14 Core Xeon E5-2697v3, 32GB RAM, NO HDD
$139.99
Cisco UCS C220 M3 1U 2x 6-Core Xeon E5-2620 2.0GHz / 64GB RAM / No HDD
$89.99
Dell PowerEdge R730XD 28 Core Server 2X Xeon E5-2680 V4 H730 128GB RAM No HDD
$389.99
1U BareMetal pfsense opnsense Router Firewall DNS Server 6x 10GB Ethernet Ports
$149.00
1U Supermicro Server X10DRU-i+ 2x Xeon Total 36 Cores 64GB 4x 10GBE-T 2PS
$333.00