On 2020-12-30 1:39 a.m., Pascal Hambourg wrote:
Le 30/12/2020 à 08:08, Glenn Washburn a écrit :
On Tue, 29 Dec 2020 15:33:50 -0800
Robert Furber via Support requests for the GRand Unified Bootloader
<[email protected]> wrote:
(...)
The heavy job is done after the kernel and initramfs have been loaded
by GRUB, and does not use /boot.
Obviously I need to learn more about initialization. I was under the
mistaken impression that all the initialization was done by Grub. Can
anyone point me towards step by step documentation that explains how a
Linux PC is initialized? What role ramfs plays? What programs initialize
the various h/w devices, file systems, etc.? Is it done by the Linux
kernel?
Presumably, it is the post Grub initialization s/w that takes that takes
time. And, it has to be accessed from the boot drive recognized by BIOS.
If this is the case, it may be theoretically possible to split the
initialization with step1 on the boot drive that initializes the NVMe
SSD and step2 on the NVMe that initializes everything else.
The expedient solution appears to be to use a small, cheap SATA SSD as
the boot drive and the NVMe SSD as the working drive, for everything
else, a la Chris Green.
