It is not possible to mount with LABEL only with kernel only. See https://superuser.com/a/1625723. I would create a small initramfs using https://wiki.gentoo.org/wiki/Custom_Initramfs#Mount_by_UUID_or_label and build it into the kernel with CONFIG_INITRAMFS_SOURCE
Abhinav Praveen ________________________________ From: Klaus Dittrich <kla...@t-online.de> Sent: 02 February 2023 15:10 To: gentoo-user@lists.gentoo.org <gentoo-user@lists.gentoo.org>; J. Roeleveld <jo...@antarean.org> Subject: Re: [gentoo-user] Anybody using refind? On 02.02.23 13:31, J. Roeleveld wrote: > On Thursday, February 2, 2023 1:15:51 PM CET Klaus Dittrich wrote: >> On 02.02.23 12:33, J. Roeleveld wrote: >>> Please only send mails to the list. >>> There is no need to add me to the TO or CC lists. >>> >>> On Thursday, February 2, 2023 12:22:49 PM CET Klaus Dittrich wrote: >>>> On 02.02.23 10:51, J. Roeleveld wrote: >>>>> On Thursday, February 2, 2023 10:42:40 AM CET Klaus Dittrich wrote: >>>>>> Is there andbody using refind? Especially in Germany? >>>>>> I have some questions about. >>>>> >>>>> If you have questions, feel free to ask on this list. >>>>> I am sure I am not the only one using it. >>>>> >>>>> -- >>>>> Joost >>>> >>>> Joost, >>>> >>>> my current system boots from bios(mbr) not uefi. >>>> >>>> My knowlege of uefi is poor and uefi is still confusing me. >>>> So it may be some of my questions will looking silly for you. >>> >>> Did you read the well-written howto on the Gentoo website? >>> >>> https://wiki.gentoo.org/wiki/Refind[1] >>> >>> >>> >>> -------- >>> [1] https://wiki.gentoo.org/wiki/Refind >> >> Joost, >> >> no. Thanks for the hint, I had just a short look into at it. >> >> There is presupposed that one is at a uefi system already. >> >> I have to install refind to a disk mounted to my mbr-booted-system, >> make all necessary adjustments there and then put it to the uefi-only >> machine and boot it there. >> >> So I cannot call efibootmanger to pin refind to nvram of the uefi-system. > > Use a USB boot-stick with EFI image, like the gentoo one. See the relevant > section in the > Gentoo installguide: > > https://wiki.gentoo.org/wiki/Handbook:AMD64/Installation/Media[1] > > > -------- > [1] https://wiki.gentoo.org/wiki/Handbook:AMD64/Installation/Media > Joost, I installed refind to the esp partition of my disk according to what I have understood so far from https://wiki.gentoo.org/wiki/Refind and the meanwhile up again site https://www.rodsbooks.com/refind/installing.html The disk is a nvme disk put into an nvme-to-usb adapter, so I can easily move it between my existing (mbr) machine and the new uefi-machine. The efi partition looks like this now: . └── EFI ├── BOOT │ ├── BOOT.CSV │ ├── bootx64.efi │ ├── icons │ │ │ ├── refind.conf │ ├── refind.conf-sample │ ├── refind.log │ ├── refind.log-old │ └── vars │ └── PreviousBoot ├── myBackup │ ├── System.map-6.1.9 │ └── vmlinuz-6.1.9 ├── mySystem │ ├── System.map-6.1.9 │ └── vmlinuz-6.1.9 ├── refind └── tools I left out the numerous contents of icons. refind is installed to teh default BOOT/bootx64.efi as I have no access to nvram up to now. The disk looks like this:( gdisk /dev/sda) Number Start (sector) End (sector) Size Code Name 1 2048 452607 220.0 MiB EF00 PEFI 2 452608 461826047 220.0 GiB 8300 PSYS My EFI/BOOT/refind.conf has this entry: menuentry Linux { icon EFI/refind/icons/os_linux.png volume PSYS loader vmlinuz-6.1.9 options "root=LABEL=PSYS ro rootfstype=ext4 mds=full" } And /etc/fstab :(the essential parts only) LABEL=PSYS / ext4 defaults,noatime,nodiscard 1 1 LABEL=PEFI /boot/efi vfat umask=00755 0 0 efivarfs /sys/firmware/efi/efivars efivarfs nosuid,nodev,noexec,noatime 0 0 When I am trying to boot this (uefi-machine) I get /dev/root can't open block device or please append correct root=boot option. The kernel is compiled with all necessary drivers built in not using modules. I don't like initrd or intramfs. I decided to use the partition label PSYS because I cannot see (like in legacy bios) to which device my disk got connected. So I relay on refind which can pass partition labels to the "root=" option of the kernel as I have read. Do you or anyone reading this thread know what mistake I have made in this configuration of refind. -- Regards Klaus
