Re: Adding new entry to GRUB for another OS on the third drive and turning system back to work?

[znavko@disroot.org]

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Hello! I got the workable config and placed it here
https://gitgud.io/znavko/guix-configs/-/blob/master/guix-config-dual-boot.scm
and in attach too.

This works!

PS: But the kernel bug rest on my Guix: when switch off PC it stops displaying me CPU registers (attach 2)
I will try to update may be I will have luck.


December 4, 2020 8:48 PM, "znavko--- via" <help-guix@gnu.org> wrote:

> Hello, Guix help!
> Please, look through my short booyloader configuration, will it break my system?
> (operating-system (host-name "antelope") (timezone "Europe/Moscow") (locale "en_US.utf8")
> (bootloader
> (bootloader-configuration (bootloader grub-efi-bootloader)
> (target "/boot/efi")
> (menu-entries (menu-entry
> (label "Ubuntu")
> (linux "(hd2,gpt3)/boot/vmlinuz")
> (linux-arguments '("root=/dev/sdc3"))
> (initrd "(hd2,gpt3)/boot/initrd.img")))))
> (file-systems (cons*
> (file-system (device "/dev/sda1") (mount-point "/boot/efi") (type "vfat"))
> (file-system (device "/dev/sda2") (mount-point "/") (type "ext4"))
> %base-file-systems))
> ...
> I just learned how to use GRUB for booting to another OS placed on another SSD in my PC.
> And now I want to add another OS to GRUB's configuration, that is holding by Guix.
> 
> Could you say, is this config workable?
> 
> And also if something goes wrong in my experiments, how to get back to previous workable Grub
> configuration?
> Can I do it with Guix usb stick? Which steps to do for reconfigure my system and "cow-store" from
> usb stick?

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; -*- mode: Scheme; -*-
;;this is znavko's Dual Boot config
;; for lightweight xfce4 desktop
;; with the second OS in GRUB on the separate SSD /dev/sdc3 ( grub: (hd2,gpt3) )
;; without networkmanager but wpa_supplicant + dhcp-client instead
;; disabling pc-speaker

(use-modules (gnu) (gnu system nss)
	     (gnu system locale) ;;for locale-definition
	     (gnu services desktop)
	     (srfi srfi-1)	       ;;for remove function
	     (gnu services networking) ;;for remove ntp
	     (gnu services avahi)      ;;for remove avahi
	     (gnu services xorg)
	     (gnu packages admin) ;;for wpa_supplicant
	     )

(use-service-modules desktop)
(use-package-modules certs gnome)

(operating-system (host-name "antelope") (timezone "Europe/Moscow") (locale "en_US.utf8")
		  (bootloader (bootloader-configuration (bootloader grub-efi-bootloader)
							(target "/boot/efi")
							(menu-entries (list (menu-entry
									     (label "Ubuntu")
									     (linux "(hd2,gpt3)/boot/vmlinuz")
									     (linux-arguments '("root=/dev/sdc3"))
									     (initrd "(hd2,gpt3)/boot/initrd.img"))))))
		  
		  (file-systems (cons* 
					(file-system (device "/dev/sda1") (mount-point "/boot/efi") (type "vfat"))
					(file-system (device "/dev/sda2") (mount-point "/") (type "ext4")) 
					;;(file-system (device "/dev/sdb1") (mount-point "/home/bob/disk") (type "ext4"))
				%base-file-systems))

		  (swap-devices '("/dev/sda3"))

		  (users (cons* (user-account (name "bob") (group "users")
					      (supplementary-groups '("wheel" "netdev" "audio" "video"))
					      (home-directory "/home/bob"))
				(user-account (name "mom") (group "users")
					      (supplementary-groups '("wheel" "netdev" "audio" "video"))
					      (home-directory "/home/mom"))
				%base-user-accounts))

		  ;; This is where we specify system-wide packages.
		  (packages (cons* nss-certs ;for HTTPS access
				   gvfs	     ;for user mounts
				   wpa-supplicant
				   %base-packages))

		  (services (cons* 
			     ;; xfce4 desktop, dhcp-client, slim
			     (service xfce-desktop-service-type)
			     (service dhcp-client-service-type)
			     (service slim-service-type)

			     (modify-services      
			      ;; removing unnecessary services
			      (remove (lambda (service)
					(member (service-kind service)
						(list ntp-service-type avahi-service-type 
						      bluetooth-service network-manager-service-type
						      gdm-service-type)))
				      %desktop-services) ;end of remove lambda services

			      ;; wpa_supplicant + dhcp-client (above) instead of networkmanager
			      (wpa-supplicant-service-type config =>
							   (wpa-supplicant-configuration
							    (interface "wlp0s20f0u1")
							    (config-file "/etc/wpa_supplicant/wpa_supplicant.conf")))

			      )	;;end of modify-services
			     ))	;;end of services

		  ;; Allow resolution of '.local' host names with mDNS.
		  (name-service-switch %mdns-host-lookup-nss)

		  ;;blacklist ugly sound speaker, blacklist
		  (kernel-arguments '("modprobe.blacklist=pcspkr,snd_pcsp,bluetooth"))

		  ) ;;end of operating-system

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