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Groups > comp.sys.raspberry-pi > #38405
| From | The Natural Philosopher <tnp@invalid.invalid> |
|---|---|
| Newsgroups | comp.sys.raspberry-pi |
| Subject | Re: Booting from a different device to root. Pi 5 |
| Date | 2026-08-13 17:13 +0100 |
| Organization | A little, after lunch |
| Message-ID | <115kqf1$1pgpc$1@dont-email.me> (permalink) |
| References | <115ko6u$1of94$1@dont-email.me> <115kpks$1p5ui$1@dont-email.me> |
On 13/08/2026 16:59, John R Walliker wrote: > On 13/08/2026 16:34, The Natural Philosopher wrote: >> >> Aim: >> >> To use up some nice SATA SSDS on a pi5. >> >> The problem: >> >> A Pi 5 doesn't support SATA without additional hardware. >> >> So I have selected this: >> https://suptronics.com/Raspberrypi/Storage/x1009-v1.1_software.html ... >> ...SATA hat. >> >> Unfortunately the SATA drives won't be available until [some part] of >> the boot sequence is completed. >> >> Now I don't mind having the /boot partition on an SD but I really >> don't want the root file system there. >> >> So I would like to force the pi to use [part of] one of the SATA >> drives as rootfs. >> >> Opinions vary on whether this is possible, >> >> Some say just put the right device [ssd root partition] in cmdline.taxt >> Others imply that you also need to compile a kernel with static pci >> support because pci isn't available when the kernel is trying to load >> the rootfs >> Others declare it is in fact completely impossible... >> >> I *could* fall back to a USB connected SSD to run the root system and >> boot from. >> >> Anyone know the truth, or otherwise? >> >> >> > pci-e must be supported early in the boot sequence because > I have a couple of PI5s which boot from nvme flash. Yes, I discovered that... I just don't know if that means it will boot from SATA over pcie Most people say not > John > -- “Puritanism: The haunting fear that someone, somewhere, may be happy.” H.L. Mencken, A Mencken Chrestomathy
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Booting from a different device to root. Pi 5 The Natural Philosopher <tnp@invalid.invalid> - 2026-08-13 16:34 +0100
Re: Booting from a different device to root. Pi 5 John R Walliker <jrwalliker@gmail.com> - 2026-08-13 16:59 +0100
Re: Booting from a different device to root. Pi 5 The Natural Philosopher <tnp@invalid.invalid> - 2026-08-13 17:13 +0100
Re: Booting from a different device to root. Pi 5 druck <news@druck.org.uk> - 2026-08-13 22:06 +0100
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