Install grub on raid 1.
Install the bootloader (GRUB) In Jessie (8.
Install grub on raid 1 The GRUB bootloader will be configured in such a way that the system will still be able to boot if one of the hard drives fails (no matter which one). If the default HDD fails then RAID will ask you to boot from a degraded disk. After reboot login to your system: 12. 8T 0 disk ├─nvme0n1p1 259:2 0 2G 0 part └─nvme0n1p2 259:4 0 1. Rsync?!! That's a horrible idea! Let raid 1 do its thing! It sounds like the problem here is setting up raid1 AFTER the centos install has completed. Feb 21, 2005 · (2) its easy to install grub to any mbr once you have linux up commands in terminal as per my tut are su grub root (hdX,Y) setup (hd0) su grub root (hdX,Y) setup (hd1) where hdX,Y defines the /boot partition or / partitiion if /boot is a subfolder (3) depending on your bios. 4 on a (bare metal) server with two disk in RAID 1 mode. Ive just finished setting up gentoo with raid 1 on the boot partition, but because raid is setup BEFORE the installation occurs, grub sees one device, and Linux RAID installs the bootloader to Sep 15, 2021 · grub2-mkconfig -o /boot/grub2/grub. grub2-install: error: this utility cannot be used for EFI platforms because it does not support UEFI Secure Boot. On the GRUB shell, type in the following commands: root (hd0,0) grub> root (hd0,0) Filesystem type is ext2fs, partition type 0x83 grub> setup (hd0) After setting up your RAID-1 on /boot, you have to install GRUB onto each drive in the RAID-1 array. The command to change the GRUB 2 installation device or boot files is grub-install run as root. when hd0 fails either bios will see only one drive or 2 if it sees Install the bootloader (GRUB) In Jessie (8. went just fine then I created a config. Jan 3, 2019 · @JB On a BIOS system, GRUB is installed along with the partition table at the very beginning of the whole disk. 0 (at the end of the RAID partitions so that they can be used as regular FAT partitions by the UEFI firmware) and mount it on /booot/efi, but it is a hack and the installer will fail to completely install GRUB on it because it cannot create the EFI boot entry. Finally, when both drives are synced, let's install grub: grub-install /dev/sda Oct 26, 2010 · What are the options to grub-install if I had /boot on /dev/md0 formed of sda1 and sdb1 and how do I tell it / is on LVM which is on an encrypted raid 1? Note that if the drives have a GPT partition table, a BIOS boot partition on each drive is mandatory. what Jun 17, 2022 · In this guide I will walk you through the installation procedure to get an Ubuntu 20. But running into problems during install. When you install in UEFI mode, refer to RAID for the EFI System Partition as the following steps only work for BIOS mode. because /boot a. May 28, 2020 · let's re-add the disk to our software RAID array: mdadm --add /dev/md0 /dev/sda1. 04 system with a luks-encrypted partition for the root filesystem (including /boot) formatted with btrfs that contains a subvolume @ for / and a subvolume @home for /home. grub-install /dev/sdc . This space is used for the core. Moving GRUB 2. However, the whole Jan 17, 2022 · Finally I have created two partitions. I use this commands to replace: # go to superuser sudo bash # see RAID state mdadm -Q -D /dev/md0 # So if you set up Grub on the boot disk, and make the partition containing Grub a RAID-1 device together with the second system disk (with Grub 1, run grub-install once for each disk), then your system will still boot if either disk fails. I'm not aware of support in Grub to declare two disks as being in a RAID-1 array so that grub-install would automatically write to both. Create an Logical Volume on it. 7G 0 part /var/crash /var/log nvme0n1 259:0 0 1. Oct 4, 2020 · Installing Ubuntu 24. Update it: update-grub. This is the one advantage of having Grub over RAID-1, but it's a big one. The system is set up in a RAID1 managed by the btrfs filesystem. Historically, Grub used to be only able to read part of RAID, I remember having to put the /boot partition on a RAID 1 (mirrored). 0), the installer will install GRUB even on RAID installs. 8T 0 part └─md127 9:127 0 Sep 12, 2015 · In case your next HDD won't boot then simply install Grub to another drive: grub-install /dev/sdb. 0), and I believe Wheezy (7. I will show how to optimize the btrfs mount options and how to add key Dec 22, 2020 · Re: grub-install: Error: 'md126,1' not found on Hardware Raid Post details about the raid setup and the actual grub command you are trying to use in [code] code tags[/code] Jan 18, 2023 · - Manually create a RAID1 array with metadata=1. This guide explains how to set up software RAID1 on an already running Debian Etch system. However, GRUB can not install to a RAID device (e. On the GRUB shell, type in the following commands: root (hd0,0) grub> root (hd0,0) Filesystem type is ext2fs, partition type 0x83 grub> setup (hd0) To install grub when using RAID1 as the /boot partition (or using /boot housed on a RAID1 root partition), on BIOS systems, simply run grub-install on both of the drives, such as: # grub-install --target=i386-pc --debug /dev/sda # grub-install --target=i386-pc --debug /dev/sdb Jan 28, 2022 · Install GRUB on /dev/vdb: root@debian:/# grub-install /dev/vdb. , /dev/md0), but will nonetheless work fine. Drive was part of a Raid 1 array. Apr 14, 2020 · Install Ubuntu Server 18. 04 LTS and my /sda HDD has been replaced several days ago. cfg also went fine. img file. . Dec 22, 2021 · To install GRUB 2 to the sdX drive's MBR or boot sector (sda, sdb, etc. ) sudo grub-install /dev/sdX. When I pull one drive and boot, the system gets past the grub, tries to start Gnome, but about about 2 minutes, the system drops from the GDM loading screen to a shell with a few errors; One thing of note though is that /home and /boot don't exist. obviously i also wrote the raid config to mdadm. 8G 0 part /cdrom ├─sda2 8:2 1 5M 0 part ├─sda3 8:3 1 300K 0 part └─sda4 8:4 1 1. If you try to install GRUB on a disk that has no partition table, or an empty one, it fails the way you have experienced. a grub is already is under RAID-1 partition. I have 2 identical drives so I've set up a Raid 1 mirror. I've checked both sda and sdb and the installation appears to succeed. 1 Check Aug 6, 2021 · Continue installation process up to the install the grub boot loader on a hard disk menu. First, let’s install Ubuntu and get a step closer to our goal of RAID1. This command allows the user to modify the installation by setting the ROOT directory, preload modules, run specific setup files and more. How to boot after RAID failure (software RAID)? This particular example shows how to setup a 3-way RAID-1 mirror so that all three drives are bootable with GRUB. To access the raid from the livecd you need to install the mdadm package: sudo apt-get install --no-install-recommends mdadm. 1 Preliminary Note 6 Preparing GRUB (Part 1) Afterwards we must install the GRUB bootloader on the second hard drive /dev/sdb: grub. Now Grub2 can real all MDRAIDs (the standard Linux software raid, which is super stable and very very good and best of all: Hardware independent, so it will boot on any system that you hook up the drives, no hardware controller necessary) Sep 6, 2012 · For GRUB2 to work with RAID1, you must leave a 1MiB space between the MBR and the start of the first partition. Sep 18, 2015 · Make sure that your Grub configuration doesn't hard-code disks like (hd0), but instead searches for the boot and root filesystems' UUIDs. Currently installing a clean Debian from scratch. Jan 23, 2022 · sudo grub-install /dev/sdb, sudo update-grub /dev/sdb; sudo dpkg-reconfigure grub-pc (note that when I've done this, it gives me the option to install on sda, sdb, and md0. The first mounted on / and the second of type swap. Finally, install GRUB on /dev/vdc (spare device): root@debian:/# grub-install /dev/vdc. 4 on encrypted disks with RAID 1, GRUB, and legacy BIOS 14 Apr 2020 - Help improve this post In this guide I explain how to install Ubuntu Server 18. 6 Preparing GRUB (Part 1) Afterwards we must install the GRUB bootloader on the second hard drive /dev/sdb: grub. I have mounted the raid and everything seems to be ok, but I have the following doubt: when I look at /proc/mdstat I see that the md1 (swap) partition is auto-read-only and rsync=pending. Same thing if you install to a partition (I'm assuming your /dev/sda1 doesn't host a PT). Jun 14, 2024 · The rsync of the files is installing grub in the second efi partition those files and the partition being of the EFI System partition type is what allows the system Mar 26, 2013 · then I wanted to install grub so I first marked /dev/md0p1 as bootable and then went on to install grub: grub-install --recheck /dev/md0. no bootmenu, etc. The installation fails though when I try and check md0. Feb 22, 2013 · 6) Ran Mint install and selected 'Do something else' for hard-drive partitioning 7) In the partitioner, I selected md0 as my Root [/] partition, gave md1 a mount point of /home/Data, and marked the Swap partition on each hard drive (sda, sdb, sdc, sdd) as 'do not use' [the logic of this being that it would use the Raided Swap partition (md3)]. Boot from Degraded Disk. Dec 14, 2020 · root@ubuntu:~# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS sda 8:0 1 7. If your server is located in a remote area, the best practice may be to configure this to occur automatically: I have a RAID1 array on my Ubuntu 12. Reboot and that should be it! ----- Hi. 04 with RAID. Mark both drives as a boot device. Sorry about that, I've edited my post to include the error message. g. Verify the disks setup. k. grub-mkconfig -o /boot/grub/grub. 5G 0 disk ├─sda1 8:1 1 5. Now press CTRL+ALT+F5 to go back to the Debian installer console: Click on the Continue button to reboot the system. 04. Then reinstall Grub --> apt install --reinstall grub-efi-amd64. conf however if i reboot I only get a: GRUB. cfg Grub appears to be using UUID and not hd0,0 by default. So, if your sector size is 512B, your first partition must start on sector 2048. When you get to the storage configuration screen, select “Custom storage layout” and follow these steps: Reformat both drives if they’re not empty. 12. Installing to sda (and possibly sdb and sdc as well) is the correct thing to do. wmknoqjiggnerklgpddtaqbcdilwvmniiakyuuekoowwnrimoar