Ubuntu Installation :: 11.04 GPT Bios Boot Partition Mirroring?
May 2, 2011
I'm doing a fresh install of xubuntu 11.04 x86 32bit via the Alternative CD. My computer has two 2TB drives and I want to mirror the partitions for redundancy For the Linux partitions (ie root and swap) I'll be creating raid partitions on each drive and using software RAID 1 to create md partitions of type ext4 and swap.
For the GPT's bios boot partition, am I also meant to use software raid ? Ie create a raid partition on each drive and use software RAID 1 to create a md partition of type bios boot ? Or am I meant to not use raid partitions and just create a bios boot partition directly on each drive ? In this case, will xubuntu's install process and grub tools ensure that both partitions contain the relevant grub files or do I have to explicetly do somthing to ensure that ?
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Jun 24, 2011
When I installed Ubuntu on my system (a year or so ago) I forgot to add a BIOS Boot Partition. This is something of a problem considering that the partition type for my 2TB drive is GPT. Hence, whenever grub is updated I get a warning:
Code:
/usr/sbin/grub-setup: warn: This GPT partition label has no BIOS Boot Partition; embedding won't be possible!.
/usr/sbin/grub-setup: warn: Embedding is not possible. GRUB can only be installed in this setup by using blocklists. However, blocklists are UNRELIABLE and its use is discouraged..
Installation finished. No error reported.
[Code]....
If so, what is the rough sequence of commands to create the partition (without disturbing what is already there) and then setting it as a BIOS boot partition.
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Jul 7, 2014
I have been running Jessie on an EFI motherboard for a while, booting just fine from a GPT formatted partition on my 3TB hard drive.
I had to re-purpose that PC, and put the hard drive into a different system that uses a BIOS instead of EFI.
Now when trying to boot, I get a text at the top of the screen that says:Code: Select allGRUB ...so it finds GRUB, but nothing ever happens. <CTRL>+<ALT>+<DEL> resets the system.
parted 2.3 says:Code: Select all 1 1049kB 3001GB 3001GB ext4 boot
2 3001GB 3001GB 32.5MB bios_grub, legacy_boot(I set the legacy_boot flag trying to fix this problem, but that flags the partition, not the MBR)
Is my problem that the "bios_grub" partition is at the end of the disk instead of the beginning?
I have read that newer versions of parted allow you to toggle the "pmbr_boot" flag directly in the MBR by using the command "disk_toggle pmbr_boot" or "disk_set pmbr_boot", but parted 2.3 apparently doesn't support this.
The pmbr_boot flag in the MBR seems more likely to be the problem than the partition at the end of the disk.
Do I need to find a newer version of parted that supports the pmbr_boot flag for MBR (if so, which version please), or do I need to move the partiton to the beginning of the disk?
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Feb 28, 2010
I installed F12 onto a 4 disk SW RAID5 array. sda has a /boot partition and a <swap> partition and all of the rest of the storage is raided to make the / partition.
The installer listed sda as the HDD with the boot partition so I updated the MBR on sda durring install. After the reboot I was sent to a grub prompt. I could run,
grub> find /grub/stage1(hd1,0) and then grub> configfile (hd1,0)/grub/grub.conf and the system boots.
I'm not sure if this a BIOS disk ordering problem. I tried switching a few SATA cables, to try and reorder disks but I couldn't get to the grub prompt with the different configurations I tried.
Should I try copying the MBR from one disk to another? It seems like it's getting past the MBR otherwise grub wouldn't load at all, so is this a grub bug?
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Jan 21, 2011
I'm trying to install Ubuntu 10.10 on my WinXP desktop computer. I used the LiveCD and manually configured the partitions. I resized my XP partition (the entire SATA HDD) and created a 37GB partition for Ubuntu, as well as a 3GB swap file. I installed the boot loader on the Ubuntu partition. But BIOS doesn't recognize that the drive has separate partitions, and I can't boot into it from Windows either. I know I didn't modify WinXP's MBR, but should I have? I didn't know where it was.
I booted into the LiveCD again, and went into the disk manager. I Edited the Ubuntu partition and saw a checkbox that said "Bootable". I checked it and hit apply, hoping that might do it. I waited twenty minutes and the little circle was still spinning with no indication that it was actually doing anything or any warning of how long it would take, so I rebooted. Still no luck.
Someone told me that Ubuntu sometimes won't be bootable if you have both SATA and PATA drives in the system, which I do (although both XP and Ubuntu are on the same, SATA drive) and gave me a page that told me to use Grub4Dos. I fiddled around with that, only to come onto the Ubuntu website and find out that the page they gave me was outdated, before Ubuntu used GRUB2.
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Jun 9, 2010
I was wondering to restore on old laptop to working order. This laptop is an old early 2000's Sony Viao, which I found in the trash. Still powers on, and can boot the latest Ubuntu LiveCD. The issue is that it did not have a harddrive in it, and I really do not want to shell out money for a drive for a laptop this old, but would still like to bring it back into service as a thin client or general purpose web/email terminal. The BIOS does NOT have a USB boot option, and every tutorial I have seen requires that in order to boot Ubuntu from a USB stick (which is what I do have). What I am wondering is, is there any way to just keep the LiveCD in the drive and use that to boot the kernel, etc, and then have it look for the rest of the filesystem on the USB stick?
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Oct 10, 2010
I'm trying to install ubuntu Linux on a Pentium 3 computer which does not support booting to the CD-ROM drives. What are my options on other ways to install? Could I either use a 3.5inch floppy disk to get it started or install on another computer and just switch the disk back over right before configuring all the hardware?
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May 6, 2010
I donwload the Ubuntu 10.04 *32bits ISO image, and i burned each image with diferent speeds. Then, i tried to install, appears the Language Selection screen, all good. then, the Localization screen, I select Colombia (I'm from Colombia), clic on forward and the mouse shows the "loading animation", but the PC doesn't do anything (I let it for 30 minutes). I tried with the 2 CD, but ever the same result. And in some times when I try to out and reboot appears an error, so I have to reboot manually (with a button ).
And other problem, is that my BIOS doesn't let me boot form USB, so I can't install form USB. The last opportunity, and tried to install it, upgrading from Ubuntu 9.10, but in the instalation it gave me some errors, and in the 80% (or something like that), appears a window asking me to install GRUB AND EVERYTHING FREEZES, so I had to rebbot manually, and reinstall Ubuntu 9.10.
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Mar 13, 2011
i just downloaded Ubuntu10.10,i used to burn the .iso file to a cd and then boot using the CD. recently my cd/dvd writer crashed and i was wondering could i boot from my pen drive in such cases,i also prepared a bootable pen drive but in my BIOS settings there is no option visble for such booting.
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Dec 12, 2010
I reinstalled XP to do a dualboot with 10.10 yesterday. All was fine. Today I went through and installed everything windows needed, and everything seemed fine. Then I upgraded the BIOS on my motherboard, and suddenly everything isn't fine. I can boot to Ubuntu just fine. But when I select Windows from the GRUB menu, it just sits there with a cursor on the screen now.
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Feb 6, 2010
i am using an USB keyboard and mouse. This is awkward because I cannot select which OS to boot from, etc.Also, cannot access BIOS to potentially turn on the legacy USB function. We do not have a ps/2 keyboard, and believe me, I looked. I acquired a usb to ps/2 adaptor: Still no joy. Also, the keyboard doesn't work within the virtual Ubuntu, while it did when connected without the adaptor. Getting my hands on a ps/2 keyboard is not an option. To get into Ubuntu, I had to, within Windows, tell the computer that the Live CD was a bootable drive, so that it would be the first option over Windows, and therefore the automatic selection when I didn't (couldn't) make one.
[Code]...
This leads me into the Ubuntu 9.10 install, where I am told Ubuntu is already on the computer (half of the hard drive, with Windows XP on the 2nd half), and I can either install 9.10 beside it, or replace it. If I choose to replace it, 9.10 takes over the entire 40 GB. Part of the problem is that the partition that Ubuntu is apparently on is /dev/sda1, and Windows XP is /dev/sda2, but within the Palimpsest Disk Utility:
20 GB File System
NTFS File System
Partition 1 (HPFS/NTFS (0x07))
/dev/sda1
20 GB File Unrecognized
Unrecognized
Partition 2 (Linux (0x83))
/dev/sda2
So I'm worried that if I install 9.10 in /dev/sda1 like it wants me to, I'll be losing XP.
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Sep 21, 2010
I have a new machine arriving tomorrow and plan on installing ubuntu 10.04 x64 and windows 7 professional. I've only ever had a single HDD before, but now I have 2 * 640GB drives.Does it matter what OS I install first?Will I have to change anything relating to the HDDs boot order in the BIOS?I only got 2 HDDs so in the event of needing to reinstall one of the OS's they're on completely different drives. Also, in the eventuality I need to reinstall one of the OSs is it simply a normal reinstall procedure, or because they're on two seperate drives will I need to do anything different?
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Aug 23, 2010
in the direction of a HOWTO (cant find one via Search or Google)hat tells me how to install dm_mirror to enable a boot of an 11.3 system that uses LVM for root and swap? I really would likecommands rather than using the GUI as it will help me understand what is going on in the background
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Oct 3, 2015
debian 8 64bit
Should bios setting be eufi or legacy?
Should secure boot be enabled?
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Jun 29, 2011
I've set up a RAID-1 array /dev/md0 consisting of two partitions /dev/sda5 and /dev/sdb5.The partition /dev/sda5 was formatted "ext2" before mirroring, but now when I "mount -v /dev/md0 /mnt", it says "/dev/md0 on /mnt type ext3 (rw)".Why is the type changed from "ext2" to "ext3" ?
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Apr 20, 2011
using onboard windows disk management i have made 75gb unallocated to add to the aforementioned ntfs data partition. but, after resizing extended partition, will i need to fix grub even though i will be adding the unallocated space to a storage partition and not the ubuntu boot partition?
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Jul 27, 2009
I have a brand new thinkpad X301 with 4GB of RAM and thinking of getting fedora 11 on it. The plan is to have it triple boot with vista/seven and hopefully OSx86. I am aware of the 4 primary partitions limit on an MBR disk. I was thinking of having a swap file instead of swap partition and not creating a boot partition as well. If I install the boot loader(GRUB?) on the root partition will I be able to boot it without any problems by using vista's boot loader?
Or Maybe I should install GRUB on the MBR and add all the other operating systems on it? Does anyone have any objections for not creating a swap partition or a boot partition? When comes to desktop environment I've been using KDE in the past, is there any major advantage of using Gnome over it? KDE seems to look really nice on fedora where Gnome is maybe more stable?
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Jan 5, 2011
I am using Ubuntu 10.10. I have a system set up with 1tb HD. I also have another 1tb HD which I'd like to use to mirror the other drive. So if the primary HD fails I can boot and operate from the mirrored drive. I've read that this is possible by using Raid. however I am confused if it is possible to set-up with a HD which is already set-up Ubuntu system. Also what what I can make out the mother board does not have a raid option.
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Nov 10, 2009
Have been tasked with a couple of Sunfire X2100 that I am slapping Fedora 11 onto for some high profile tasks around the office. Have two drives of the same size in each server and would like to have the two disks mirrored for redundancy. Admittedly I am new at Linux administration and am feeling over my head.
1. Can this be managed during the installation process of Fedora 11?
2. If yes, let me know the step by step please.
3. If no, I take it a cron job of rsync is going to be my best option.
4. Alternatives insights etc.
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Mar 22, 2011
I recently bought a video card for my pc. I had it running pretty nicely on Ubuntu10.10, I started windows and later restarted and after that it wouldn't get past the Graphic cards bios. this is rather odd isn't it? I suspect it maybe dead or that my motherboard bios is stuffed but i reset that too and it still wont go.. The specs are Pentium4 Proccesor 1gb ram motherboard 661gx-m7 Nvidia GeForce FX5200 DDr128mb
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Mar 24, 2011
I currently have a Windows XP OS which i want to dual-boot with Ubuntu Linux 10.10 . I put the disk in the drive and chose the option to install Linux through Windows. But it hangs in the middle. I am also unable to change my BIOS settings due to which i can"t change my boot preference. My first Boot is the HDD. I want to change it to CD-ROM. Any suggestion? I also have another PC where i can boot through the CD...I tried installing there by booting from the CD but i get this error message after seeing the purple Linux screen with the loading dots. "(Process:286):Glib warning**:getpwuid:failed due to unknown user id (0)
P.S.- I am not able to see any options while the boot is going on
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Oct 14, 2010
I've got two laptops running Ubuntu. Both have had Lucid installed from the live cd. I have upgraded one of them to Maverick. Both distributions are running great after they boot up, but I haven't experienced any faster boot times with either distibution. Both boot to Bios and then the screen goes black with a blinking cursor in upper left corner of the screen. The black screen remains for 30 to 45 seconds and then I get the Ubuntu splash screen for maybe 5 seconds, and then desktop. Why am I not seeing faster boot times? I realize 45 to 60 seconds is good compared to other os's, but I anticipated much faster boot times. Shut down on the other hand is quite fast at maybe 5 to 10 seconds. Does anyone else get this black screen on boot? Seems like wasted time cause I can't tell what's going on during the time there is a black screen. This is not a real big deal breaker, as I don't reboot very often, but I just wonder why bootup isn't faster.
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Mar 7, 2010
I'm running 9.10 off of a 4 GiB CF card. I keep running into space issues with updates, so I purchased an 8 GiB replacement card. I've cloned the 4 GiB card to a .IMG file using DD.I've then copied the 4 GiB image back to the 8 GiB card using the Ubuntu startup disk creator program. Once done, I'm able to properly boot off of the new 8 GiB clone.Unfortunately, the clone ends up with 3.67 GiB of unallocated space at the end *see attached). I tried deleting the "extended" partition that the swap is located at after booting from a Live CD and the system was unable to boot after this. I was thinking that I would delete the swap entirely and create a swap file after I merged the existing partitions, but I was unable to do this.
best way to do this (e.g. get one large 8 GiB partition with my old image on it)? I still have the original untouched 4 GiB card and also have an external CF drive if I need to redo the cloning. I've also used Clonezilla before, so perhaps there's a way to do this that allow me to grow the image as it's being cloned.
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Nov 9, 2010
My laptop can't boot from cdrom becouse it is broken and it can't boot from USB becouse it has never been able. Ubuntu 8.10 now run in my laptop withgrub 1.I've just try the following trick.1) I put grub4dos in /boot2) I put iso image in /boot3) I add the follwing entrt in source.list
Code:
# =========== GRUB4GOS ===================================
title == Use grub4dos for the following entries: ==
[code]....
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Jan 5, 2011
if having a boot partition is recommended for dual boot installation of Ubuntu 10.04 and Windows 7 and why?
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Feb 14, 2010
GNU GRUB 0.97
Ubuntu 8.04.4
2.6.24-26
Added an SSD (dev/sdc) and decided to move some less often changed directories there. Started with /usr and /boot, leaving / on a primary in the first drive, for now. All started ok, and my changed fstab mounted the right ones, and the system works.
However, grub is actually using the original /boot on / on sda1. I cannot see any way to change this. (Which makes it sorta hard to update the kernel
From grub:
Okay, since it has two choices, I tried to tell it which one to use. But, grub> root (hd2,5) does nothing.
Disk /dev/sda:
what I seem to recall, grub doesn't care about the boot flag on the disk. Nor does it care about primary vs. logical (except GNU doc says "makeactive" only works on a primary?).
The GNU doc also indicates that it looks for a directory /boot on the partition, so if you're mounting a partition as /boot, it also needs to contain a /boot directory under it. Tried that, but no change.
Is my problem the logical partition? Does that prevent "grub> root" from changing it? I'm afraid to wipe out the old /boot and find that I can't start up.
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Feb 15, 2010
After installing karmic with Grub2 I am unable to boot into Archlinux partition. Grub2 has removed the last line of the Archlinux boot stanza! It used to read:-
[Code]....
Following the Grub2 tutorials I have tried editing /etc/grub.d/40_custom as follows:-
[Code]....
But no luck. Only way into Archlinux is to get into the edit shell and manually add the missing line and remove other stuff not needed. I have spent hours trying to resolve this issue and I am fairly p----d off
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Apr 16, 2010
Well today I decided that I couldn't wait for the offical release of 10.04 LTS, so I upgraded from 9.10 to 10.04 LTS Beta 2. After realizing that many problems had come with that update, I decided to just format my Ubuntu partition and reinstall it. Somehow my GRUB stopped working from when I formatted Ubuntu, so I whipped out the old Toshiba recovery disk for Windows Vista 32bit. After many attempts to have the recovery portion of the disk fix all of my problems and seeing no results, I decided that reinstalling Ubuntu (and GRUB) might make everything all better. Well it didn't. Grub shows my Windows partition but fails to boot it. After selecting it, it goes to a blank screen and stops responding. And to add to all of my problems, my BIOS has changed slightly. It no longer shows/or responds to F2 or F12 when I tried to give another try at that Toshiba recovery disk. That kinda sucks since I can't choose what to boot. Please help me!! I really don't want to have to format my entire hard drive and try to install Windows Vista again (Not that Vista is anything anyone should love) I have many expensive programs that can only be activated a certain amount of times. I don't even think that I could reinstall Vista since my BIOS won't let me boot the CD/DVD drive.
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Mar 8, 2011
I was installing ubuntu 11.04 natty narwal daily build alongside windows 7 and ubuntu 10.10, and was resizing partition when computer was taking too long to resize, i then restarted computer, my computer appears to be working, but i get no display on my monitor, even though it is powered on. getting my bios to appear, or restoring my computer to normal.
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Mar 13, 2010
My most recent F11 -> F12 was a near-fiasco, because I had the bad luck of foolishly having two distinct physical drives in the same system, where the /(root) partition on each drive had exact same UUID (result of partition cloning and neglect to change the UUID on the copy)
BUT! the UUID redundancy was not the initial trigger of my problems (its near-disastrousness played itself out only while I was REMEDYING the initial problem). The initial trigger: insufficient space on my /boot partition. "preupgrade" neglected to properly assess the space and/or warn me about it before proceeding.
In addition, the automatic cycling out of grub kernel entries came to bite me (part of many factors of the near-fiasco) because after the unfinished upgrade i had only one working kernel left to boot into, until I messed up that remaining one (too long a story), and then grub-install messed up my booting because of duplicate UUID. At any rate, at the end of what looked like a good preupgrade-reboot-upgrade-package-install process the post-install phase lingered a looong time, then I found myself booted into the old Fedora 11 kernel with absolutely NO modules (corresponding /lib/modules had been erased by the upgrade!) Somehow the system ran, but no USB, no wifi, no ethernet, no way to easily place the right kernel rpm onto the hard drive (had to unscrew the drive,etc., to copy over the correct kernel rpm). (Plus, file /boot/preupgrade/vmlinuz, left over from the arrested upgrade, was NOT the right target upgrade kernel version (2.6.32.9-70.fc12), so it didn't help either because it didn't have its modules either. The target /lib/modules (version 2.6.32.9-70.fc12) WERE there, but the kernel itself was NOT, due to upgrade running out of space on the /boot partition).
(Oh, and the preupgrade/upgrade had deleted my /var/cache/yum/preupgrade/ packages; hence my inability to quickly (re)install the 2.6.32.9-70.fc12 kernel rpm -- why!? it hadn't successfully finished the process!)
(Also, FWIW, i ended up rescuing the system through "rpm -i --force <kernel>", many an F12 rescue boot, chrooting, /boot/grub/grub.conf & fstab edits, tune2fs/uuidgen, running grub on command-line ("setup (hd0)"), etc., etc.)
So, any tips out there on phasing out the old-school /boot partition scheme, the safest and easiest way (without destroying a working system, of course)?
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