Safely boot multiple windows and linux systems on both gpt and mbr disks. Ubuntu requires manual partitioning for the software raid array. Convert a single drive system to raid arch wiki arch linux. I get through the initial setup of the, hostname, fully quilified domain name, root password, new userpassword setup, and i get to the partioning and software raid configuration.
Instead, you should make a small 1mb partition on each disk and raid them together and set it as a grub boot partition im not sure of the actual name. If the two disks are devsda and devsdb, run both grubinstall devsda and grubinstall devsdb. Unless you must dual boot with windows, it is best to avoid their use and stick with plain old linux software raid, which you can set up using the alternate installer after destroying the fake raid array in the bios utility. This guide explains how to set up software raid1 on an already running ubuntu 10.
In this tutorial, let me show you how to configure grub2 boot loader settings in ubuntu system. But when it gets to install the grub boot loader part i get the following. Installing ubuntu server with intel matrix raid arrays. When using grub with windows grub gets up to the second stage boot loader. The grub boot loader was previously installed to a disk that is no longer present, or whose unique identifier has changed for some reason. It also requires a separate partition on each disk minimum size 200 mb set aside for the boot loader. Thats the basics of multibooting of dual booting with linux and windows using grub. Installing grub2 on ubuntu with software raid mirroring server fault. Grub is supposed to be loaded by the bios or the efi firmware. For more information on a variety of grub 2 topics, please visit the grub2 main page.
This guide explains how to set up software raid1 on an already running debian etch system. 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. Uefi should be able to boot whatever disk hasnt failed, and grub install will write to the raid mounted at bootefi. After youve downloaded and burned the ubuntu iso image, or created a bootable usb stick. How do you ensure grub is properly installed on a software raid array in ubuntu. This page details the procedures for installing and reinstalling grub 2. How to rescue, repair and reinstall grub boot loader in ubuntu. Grub only has limited filesystem support built into itself. The information applies to most versions of grub 2, but is specifically written for version 1. So, i created an install usb stick with startup disk. How to set up software raid1 on a running system incl. Install ubuntu on raid 0 and uefigpt system github. The installation proceeds smoothly but always fails on the install the grub bootloader on a hard disk step. I do not issue any guarantee that this will work for you.
I believe i have an ich8 chipset, if that is relevant. Make sure that your grub configuration doesnt hardcode disks like hd0, but instead searches for the boot and root filesystems uuids. While it is still possible to use legacy grub, you may choose to use the newer grub2 boot loader for your master boot loader. You want to place your bootloader in the mbr master boot record of both your sda and sdb harddisks to ensure you can still boot if you lose one of them. Booting ubuntu with a failed device in a raid1 will force the system into a recovery console. Install ubuntu on a software raid array esecuredata inc. Install ubuntu with software raid mdadm for the installation, im using the live server installer for ubuntu server 18. Afterwards we must make sure that the grub2 bootloader is installed on both. How to fix grub bootloader after deleting ubuntu linux partition most of us including our team using a windows 10 ubuntu linux dual boot setup in our pc might have run into this issue.
It looks like the raid has the boot files, and the sdb2 is not formatted. During the install, make sure grub is installed to the mbrgpt of the primary disk. All modules are digitally signed for your security. Following this, there are also no guides on installing the grub bootloader to both gpt partitioned devices afterwards. How to fix grub bootloader after deleting ubuntu partition. Introduction installing ubuntu server on dell poweredge and poweredgec servers that utilize intel matrix raid arrays biosfw raid intel corporation patsburg sata raid controller can be a tricky and sometimes frustrating process. Ubuntu will probably install grub onto the first disk in your system. The purpose is to provide a stepbystep method for mirroring a running system onto a new second physical disk that has been installed. Following this, there are also no guides on installing the grub bootloader to both gpt. How to set up software raid1 on a running lvm system incl.
On the next screen, press f6 function key in order to open the other options menu. Having seen our plain and simple install of ubuntu 12. That adds a lot of overhead that slows down raid and you dont need the redundancy on swap. Install grub2 to the master boot partition, and no the master boot loader of the disk. In case your next hdd wont boot then simply install grub to another drive. If the default hdd fails then raid will ask you to boot from a degraded disk. When you get to disk partitioning portion of the installation, set up your partitions on each disk as.
It is responsible for loading and transferring control to the operating system kernel. Cannot install grub to raid1 md0 ask question asked 7 years. The best way to use two or more disks for swap as in this situation is to set both partitions to the type swap then in etcfstab, set them with the same priority. It was derived from grub, the grand unified bootloader, which was originally designed and implemented by erich stefan boleyn. Are you sure that your system can boot from a software raid5 array. Advantagesdisadvantages of installing grub on a software. If it is not part of the raid device, then the boot sector has no redundancy, and you may be unable to boot in. On debian this is called a reserved bios boot area.
Ubuntu s installer currently supports installation to software raid1 targets for boot and. How do i install grub on a raid system installation. This guide explains how to set up software raid1 on an already running lvm system ubuntu 10. The best way to ensure that grub2, the default bootloader in debian and ubuntu, is installed on. Most linux distributions are now using grub2 as their default boot loaders. Unable to install grub to software raid array in ubuntu. This is a guide to installing software raid 1 mirroring on a remote ubuntu server with no access to external media. I followed the instructions on setting up software raid in ubuntu server posted on april 24th, 2007 by derrick webber at the advosys. Grub boot loader is the first program that runs when the computer starts.
Install grub bootloader on second drive this step is not necessary if you use ubuntu 9. This article was written by kent baxley, software engineer at canonical. According to this wiki, grub accesses the drives directly so you need to use raid1 for the boot partition. How to configure grub loader after aptget upgrade on ubuntu 12. You could instead not have the first partition on both drives be used by raid at all. Briefly, a boot loader is the first software program that runs when a computer starts. From the rescue cd, mount t ext3 devsdb2 boot fails. If you want to use some other raid level for most things, youll need to create separate partitions and make a raid1 device for boot. The grub2 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. Ubuntu server wont boot after clean install with software. If i choose install the grub boot loader on a hard disk option, i can pick the partition, but entering sdb2 or md1 gives the same error.
I want to install grub on hard drive with grub install but i dont know what to set as location for boot loader. I have both windows 10 and ubuntu working on gpt because my motherboard supports uefi. Installationsoftwareraid community help wiki ubuntu. I have a mdadmmanaged raid1 with a single ext4 partition on it having both the os files and grub s files in boot grub, and id like to know what modules and what configuration do i need for grub to be able to boot from it. How to configure grub loader after aptget upgrade on. Now we have to set up the boot loader to boot to the raid drive. If your server is located in a remote area, the best practice may be to configure this to occur automatically. Install ubuntu onto the drives with raid as described in just md above. True, raiding boot can be a challenge because when grub loads from the bootsector, it needs to read the files in boot. I select manual set and create the paritions and software raid and assign ext 4 and swap. But it makes sense that this would confuse things, since grub uses partition 2 explicitly the. When i first tried booting it, the grub screen came up, but selecting any kernel resulted in an endless stream of system messages, and i never got to login prompt. How to set up software raid 1 on a running system incl grub 2 configuration.
Upon completion of the install boot from your ubuntu cd and run ubuntu. Proceed through the installer until you get to filesystem setup. When one of the mirrored disks fails, and mdadm marks the raid degraded, it becomes impossible to reboot the system in an unattended manner. Installing grub2 on ubuntu with software raid mirroring. How to configure grub2 boot loader settings in ubuntu. On this wiki, they installed grub onto both drives of a raid1 partition. Once ubuntu boots youll want to install grub onto ubuntu s drives and possibly restore the bootloader of another operating system if ubuntu stepped on it. And then yes, you install grubs bootloader on all your drives so the server can boot from any of them. Assuming this is a bios booting computer and not efi, and that you partition each individual disk and create a raid type partition and use those partitions to build the raid array, then you install grub to each of the individual disks in the array so that any one of them can boot the system using any n1 disks that are still present to access the array. We tested this grub bootloader fix with various systems and configurations and had that it does well enough to be recommended for all different cases for issues. Setting up raid on an existing debianubuntu installation. The grub 2 files will normally be located in the bootgrub and etcgrub. It is a good idea to install grub on your software raid device if you are using one because if your raid device becomes degraded, your system can still boot.
How to set up software raid 1 on a running system incl. And then the kernel takes charge, and initializes the rest of the operating system. Im trying to fix grub menu not showing after installed ubuntu 18. Supports both 64 and 32 bit efi firmware as well as bios.
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