Re:VanillaOS: Immutable Ubuntu-Based Linux
by T3OU-736 on Saturday December 31, 2022 @09:12AM
(#34196568)
I have found IODD 2531 (there are likely others) to be super-useful for that sort of a thing.
It presents an ISO (using the rocker on the side as a selector) from its HDD as a bootable CDROM target, and still exposes the HDD/SSD as a separate target.
So, it is possible to boot what is an RO OS image, and use the HDD/SSD target as an overlay, but because it is not flash memory, the wear issue is far less of a problem.
And, since it is presenting ISO images as boot targets, it is possible to (relatively) easily test upgrades while keeping the overlays separate.
It presents an ISO (using the rocker on the side as a selector) from its HDD as a bootable CDROM target, and still exposes the HDD/SSD as a separate target.
So, it is possible to boot what is an RO OS image, and use the HDD/SSD target as an overlay, but because it is not flash memory, the wear issue is far less of a problem.
And, since it is presenting ISO images as boot targets, it is possible to (relatively) easily test upgrades while keeping the overlays separate.