Number start end size file system name flags 1 1049kb 106mb 105mb fat32 efi system partition boot 2 106mb 240mb 4mb microsoft reserved partition msftres 3 240mb 456gb 456gb ntfs basic data. Booting from a raid array is very similar to booting from a lvm logical volume aside from raid specific terminology and syntax of raid partitioned volume. Minimal installation cd 20200223 348 mib hybrid iso livedvd 20160704 2 gib. The problem is at the end of the installation, it tries to install grub. To use windows and software raid, windows has to be actively running. Jun 06, 2014 this tutorial will concentrate on presenting a way you can run some linux iso distributions directly from your hard disk by editing ubuntu 14. Raid 6 also uses striping, like raid 5, but stores two distinct parity blocks distributed across each member disk. I have recently added a drive to a system and have successfully raided raid1 the paritions, with the exception of the boot partition. Nov 17, 2012 grub uses physical and logical addresses to address the disk, it cant even read from new paritions whereas, grub2 uses uuid to identify a disk thus is more reliable. In disk management is disk 2, we will remember number 2 here. Changing root hard disk on gentoo with lvm and grub2 blog. Solved cant install grub2 on software raid installation. How to set up software raid1 on a running system incl. As far as i know and i just finished installing 2 such systems grub2 just works.
This howto is a mix between the gentoo handbook, sasaki handbook and many tips found on the web. Jul 11, 2010 i have been setting up a two machines with software raid to use as xen virtual environments. Changing root hard disk on gentoo with lvm and grub2. Gentoo provides two ways of building and installing linux kernel. Hi, i just migrated to grub2 which works fine thanks to the good gentoo docs. Raid 1 issues grub2 hello, ive been trying to get a software raid setup on 2 1tb drives with xmbcbuntu for about a week.
While browsing some linux sites, i found that using grub2, we can have boot on lvm raid. How do i install grub on a raid system installation. The first important part is to understand which drive is bootable. This documentation is free for all to read and use. Installing grub2 on gnulinux software raid sinodun. By default it tries my first disk, which gives a fatal error. However, be careful for example the gentoo page for grub2 raid has currently been cobbled together and needs revising by someone who knows the difference between raid and lvm. The grub2 install devsda and grub2 install devsdb should work as expected on a raid 1 array comprised of devsda2 and devsdb2 for boot. For a shotgun approach, see grub2 quick start if migrating from grub legacy to grub2, see grub2 migration. Mar 06, 2015 if the system partitions are on a software raid install grub 2 on all disks in the raid. I have recently added a drive to a system and have successfully raid ed raid 1 the paritions, with the exception of the boot partition.
Disclaimer wol wrote most of the raid stuff and someone else has merged it with the lvm stuff. Introduction this is a guide to help with the initial setup and install of gentoo on a fairly recent pc with uefi. Software raid has to be managed by the operating system that is currently running, so to use linux on software raid, linux has to be actively running. If the system partitions are on a software raid install grub 2 on all disks in the raid. If you pointed grub2 install at the right place the second command line at 1, i believe you should have grubx64. In bios mbr disks, leave a space at the start of the disk for grub2 to be installed.
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. I wanted to migrate this installation to a raid1 setup where there were two disks, four raid partitions md0, md1, md2, md3, in the same configuration. Gentoo installation with raid, lvm, luks and systemd. In configuration variables an exhaustive list of grub2 configuration variables, as used by etcdefaultgrub, is documented. However, while both versions of grub can be installed simultaneously, only one version of grub may be active as the systems bootloader at a time. As outlined in the gentoo grub2 wiki page recovery section you can simply reinstall grub2 to the mbr master boot record, linking to your original boot location. I started from a complete, working gentoo installation on one hard drive comprised of the recommended 4 partitions call it hard drive sda. Grub2 has an entirely separate code base from grub legacy, and features a new shelllike syntax for advanced scripting capabilities. How to install windows 7 onto a software raid array. This article describes how to setup a linux system that can boot directly from a software raid1 device using grub.
For illustrative purposes we will also create other partitions using lvm2 on the raid1 array, providing a fully mirrored system. Dualboot gentoo and windows 7 with biospowered software raid. I decided to run gentoo as the dom0 os because there is lots of good documentation for it and it has always been my favorite gnu. You cant have two different operating systems managing the same raid array because he way they create, use, and manage raid is. This guide explains how to set up software raid1 on an already running debian squeeze system. Grub vs grub2 bootloader learn the main difference.
Adding or improving documentation on the gentoo wiki. You might need to add the initrd in you grub configuration after the kernel line. After all, it was a grub2 bugissue with a degraded software raid array grub2 1. Even if one of the disks in the raid array fails, the system can still boot.
Installing gentoo with grub2, gpt, luks and software raid. Jun 26, 2017 check the number of hard disk you will install, be it usb or hdd. Install grub2 on usb and hdd from windows aio boot. In advanced storage the necessary steps are documented on how to install and use grub2 on more advanced storage situations, such as software raid, logical volumes or encrypted file systems. Grub uses physical and logical addresses to address the disk, it cant even read from new paritions whereas, grub2 uses uuid to identify a disk thus is more reliable. Number start end size file system name flags 1 1049kb 500mb 499mb esi boot 2 500mb 35. The sysboot grub package is slotted which means both grub 0. Grub2 the grand unified bootloader version 2 is a replacement for the original grub legacy boot loader, which is now referred to as grub legacy. Gentoo forums view topic solved installing grub2 with. So i followed the gentoo x86 with software raid and lvm2 quickinstall. You know what gentoo is and what you are getting yourself into, you. I think in most instances, my problem seems to be grub. Booting in rescue mode onto the system and letting the raid recover itself has fixed the issue for the original setup in question. When the root file system is located on a software raid, an initramfs is necessary for automatic assembly.
Boot from the ubuntu live usbcd and select the option try ubuntu without installing check if efi is enabled in. When the bootloaderstep is entered i selected grub2 each time i loaded a new raid install. I have it ready and mirrored, but cant get grub2 updategrub to find it. Software raid for root file system boot using grub 2. Way back in 2005, the reorganization of gentoo led to the formation of the gentoo council, a steering body elected annually by the gentoo developers. Im trying to setup and install ubuntu on a raid 1 setup.
This should work with a simple software raid setup. If you want to play with getting it working with the uefi stub in the kernel the way its booting now, you will need to add in the kernel command line options you need to boot into the kernel itself, which you. Gentoo raid installation and other sundry ways to wack your box by g. So, assuming your root partition is located on devsda3 and you have a separate boot on devsda1 you would do the following. Note that the situation is completely different in grub 1 and grub 2. Live environments and stage archives can be downloaded using the links below. Also, it only discusses how to setup a raid array for arbitrary storage. Grub2 for windows supports installation and boot on three platforms. I wanted to migrate this installation to a raid 1 setup where there were two disks, four raid partitions md0, md1, md2, md3, in the same configuration. The gentoo installation docs assume single disk and the grub2 install docs wiki didnt mention installing mdadm first. Raid 6 requires 4 or more physical drives, and provides the benefits of raid 5 but with security against two drive failures. This is not a replacement for the official gentoo handbook. If you need specific support in the initramfs, such as lvm or raid, add in the appropriate options to genkernel.
I am not the best typist this side of stone mountain. Forward 15 years, and today we had our 200th meeting. Details contents, hashes, and signatures minimal installation cd, hybrid iso, stage 3. The website of gentoo, a flexible linux distribution. Jun 24, 2005 raid devices should be assembled by the kernel before any. Unlike grub2, in grub legacy partition numbering also starts at 0. Raider is a tool to automate linux software raid conversion.
For those who followed the gentoo handbook it should be devsda. Reviving an old tradition, the next gentoo bugday will take place on saturday 20200606. The article confuses the md raid uuid with the filesystem uuid. Installation of grub2 software as the boot loader of the system. View topic solved installing grub2 with boot on software raid.
The gentoo wiki has information that discusses both grub 1 and grub 2. In this tutorial i will show you how to reinstall grub2 bootloader on a ubuntu system with efi partition. While browsing some linux sites, i found that using grub2, we can have boot on lvmraid. Grub 1 doesnt know anything about raid, but can fake reading from a raid1 device by reading one of the disks this requires a 0. However, be careful for example the gentoo page for grub2raid has currently been cobbled together and needs revising by someone who knows the difference between raid and lvm. This tutorial will concentrate on presenting a way you can run some linux iso distributions directly from your hard disk by editing ubuntu 14. I think i will attempt to add that to the grub2 wiki doc, i cant be the only one using raid and running into this issue on a new install. If somethings wrong please feel free to correct it. Warning the grubmkconfig utility does not work properly when using software raid. We will be using gentoo installation as an example. Check the number of hard disk you will install, be it usb or hdd. Tired of go on a lot of link each time, i decided of all regroup in a massive tutorial.
I have been setting up a two machines with software raid to use as xen virtual environments. Installing gentoo with grub2, gpt, luks and software raid mdraidmdadm so for various reasons i wanted to install gentoo utilizing full disk encryption with luks except for boot ofc, mdraid, gpt and grub2. I cannot update by grub too through any third party rpm repositories since i do not have an internet connection. These instructions only discuss the last form of raid. Grub2 is better than grub original in the features it provides, other than that, grub legacy trumples grub2 in all aspects. Just wanted to try my hands on it, but i am unable to find any grub2 rpm file. Raid devices should be assembled by the kernel before any. See genkernel help for more information, or the next example which enables support for lvm and software raid mdadm. Jun 10, 2014 to make gentoo start after reboot install grub2 boot loader on your first hard disk and generate its configuration file by running the following commands. It is able to convert a single linux system disk in to a software raid 1, 4, 5, 6 or 10 system in a twopass simple command.
May 30, 20 installing gentoo with grub2, gpt, luks and software raid mdraidmdadm so for various reasons i wanted to install gentoo utilizing full disk encryption with luks except for boot ofc, mdraid, gpt and grub2. Gentoo linux installation guide with screenshots part 2. As outlined in the gentoo grub2 wiki page recovery section you can simply reinstall grub2 to the mbr master boot record, linking to your original boot location so, assuming your root partition is located on devsda3 and you have a separate boot on devsda1 you would do the following. Run kali linux, backbox and gentoo distrubutions directly. Solved cant install grub2 on software raid my several installs of raid0 utilized grub 2 with no problems.
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