Software :: MBR, Boot Partition And BIOS Ordering
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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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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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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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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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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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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Nov 8, 2015
When I boot my debian desktop, I get these errors:
Code: Select allnov 08 22:05:12 Luca-PC systemd[1]: Job paths.target/start deleted to break ordering cycle starting with basic.target/start
nov 08 22:05:12 Luca-PC systemd[1]: Job rpcbind.service/start deleted to break ordering cycle starting with basic.target/start
nov 08 22:05:15 Luca-PC systemd[1]: Job paths.target/start deleted to break ordering cycle starting with basic.target/start
nov 08 22:05:15 Luca-PC systemd[1]: Job sysinit.target/start deleted to break ordering cycle starting with basic.target/start
nov 08 22:05:15 Luca-PC systemd[1]: Job rpcbind.service/start deleted to break ordering cycle starting with sysinit.target/start
The system works perfectly, but I'd like to understand why I get these errors, and how I can fix them.
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Apr 2, 2011
I am looking for a basic online ordering system that is:Web-based. Runs on LAMP, etc.Stable, reliable, etc.Open source.The end-user uses a web browser to order items from the list, quantity for each item, etc.Prints that order for the business owner.
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Jun 23, 2011
I have a dual monitor setup and I've used Scale for a few days now, but I'm still confused about the expected ordering of the windows within the same workspace. For example, the last focused window isn't necessarily placed at a fixed spot, e.g., top left corner. It seems that if a window on my left monitor is last focused and I invoke it on my right screen, then it'd appear on the top left corner. However, if a window on my right monitor is last focused, it gets past just the last focused window on my left monitor. The last focused window on my left monitor eventually shifts to the bottom right corner.
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Aug 20, 2009
I've published a samba share on a Ubuntu 8.10 server, and mounted the share on a windows box. For some strange reason the files are not sorted by file name (nor by any other sorting type) if I list them from the Windows command line (dir). I could always use the "dir /on" parameter, but I hope there's a way to make samba sort the files for me
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Nov 6, 2010
I am trying to help a small restaurant owner take orders via the web.Looking for a solution that:Can create the restaurant's menu.Display that menu on the restaurant's web site.Preferably, using PHP with MySQL.Take orders via that web page.Let the restaurant owner update the menu with today's specials, via the web.
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Apr 14, 2010
Is there any way to make rhythm box, order by artists but ignore 'The' at the beginning of artist names?
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May 13, 2010
On Windows, the widget set for windows is on the right and the widget order is minimise, fullscreen, close. Linux in general (And Ubuntu's themes specifically) *generally* mirrored this.On OSX, the widgets are on the left and the order is close, minimise, fullscreen.On Ubuntu 10.4 the widget set has been moved to the left hand side, but is just a move of the standard windows order. Is it possible (in a way that won't break future themes or edits, so by using the GUI preferrably but I can't find any option) to change the widget ordering?
I like the Dust Sand theme fondow borders etc, which doesn't actually show icon differences for the 3, just 3 dots. As a user of Windows and OSX as well as Ubuntu I keep finding myself clicking the wrong one as my brain just expects them to be in the OSX order when on the left (it just makes sense in my head for close to be on the outside edge, whichever side that may be, and for minimiseo come beformaximise/fullscreen when reading left-right). I realise other people may (and probably will) disagree with me on this, especially non-mac users, so it'd be preferable to be able to customise the order rather than force one or the other on people.
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Jan 26, 2011
I have installed Ubuntu 10.10 Minimal on a 2GB USB using CLI and it is working very well after adding a few applications. But this USB will be used only on machines other than my own - likely with Windows as the only OS. And it is not comfortable for me to go into the BIOS of a strange machine to change the order of booting and afterwards go back to reset the order , especially with the owner looking on, obviously worried, and wandering whether his machine will still be working!
So my question: Is there any way to boot from a USB without having to go into the BIOS? code...
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May 21, 2010
I am trying to install a box here where my /storage partition is about 2.5T.I had setup the partitioning with suse, while testing, and all worked well.Now when trying to install CentOs 5.5 it gives me an error, that my boot partition is on a gpt partition and this machine cannot boot that.Also I don't see the option to create XFS partitions from the installer.Can 5.5 support GPT @ install time?
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Jul 28, 2009
I've had FC11 x86_64 running for awhile based on an upgrade from FC10. I powered down one night then when I tried to boot the next day the system just sat at the BIOS prompt "Verifying DMI pool data...". I opened the case to check all cables - all fine. I've run a memtest, also fine. I then suspected a bad HDD so I ran the Seagate tools from the Ultimate Boot CD (fast test) and both HDDs came up fine. BIOS can see both disks fine, too. I stuffed around with fixmbr and fixboot and got one step further, with it sitting at "invalid operating system" or something like that. I was able to use Linux rescue mode to mount the old filesystems fine.
Today I've completely blown away all my old partitions and started from scratch. After successfully completing an install with custom disk layout (identical to old layout) it still just sits at "Verifying DMI pool data..". Do I have a bad sector in my boot block? Possible BIOS issue? Is there some tool to re-write the boot block?
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Sep 19, 2010
im on an old (8 years?) hp that doesnt support booting from usb. will a bios upgrade change that?
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Oct 16, 2010
I understand this is not directly an ubuntu issue, but this arose as I was trying to install ubuntu, so I'm hoping some kind souls on here would be good enough to help anyway.
I've in the past installed ubuntu on to my PC using a CD, but this time I thought I'd try creating a USB startup disk.
I was required to set up the BIOS to change the boot order so I can boot from the USB flash drive.
The problems arose when I pushed the 'DEL' key (the correct key for my motherboard) to access the BIOS setup. When doing this the computer completely froze and would not progress any further to boot. It would still boot normally from the HDD provided I didn't try to enter the BIOS.
Looking on the internet for a solution I tried using the motherboard jumper to reset the CMOS. Now I can't boot up the computer at all. I get a message saying 'CMOS checksum error - Defaults loaded' then it asks me to press F1 to continue. I try this, but nothing happens. Clearing the CMOS has made things worse as now I can't get the computer to boot at all.
Have I killed my motherboard somehow? I've tried using a different keyboard (one USB and the other a USB keyboard but with an adaptor to connect it to the P/S2 port).
On further investigation any key press from the keyboard is enough to freeze the computer at whatever point.
My motherboard is an WinFast NF4SK8AA with AMD Athlon processor and 4Gb of mem.
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Nov 16, 2010
i have ubuntu 10.04 server on a usb (it is an .img file) , and i.m trying to install it on an ancient machine (64mb of ram to be exact), and it has no usb option in the bios menu.
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Jan 15, 2011
I have a 7 port USB hub, and have more than 2 usb storage devices, but in BIOS it only allows me to run off of e:/ f:/ and h:/ (h:/ is my built-in card reader) I want to be able to add new boot options, or at least 1 more for G:/, is this possible?
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Feb 21, 2011
I have a recent ACER laptop that I used to use with Ubuntu only, but Ubuntu has crashed and won't boot anymore. I tried booting it via the live CD to try and recover my files before re-installing everything, but the CD won't run automatically.
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Apr 18, 2011
My laptop is windows xp pro, I need to install ubuntu, so I kept Ubuntu CD into my lap and restart, again it shows windows xp, some body told "BIOS is not set to boot from CD or DVD drive".
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Aug 29, 2010
Under Windows XP in the C Drive, I've downloaded PLoP boot manager to force the USB boot. I've tried about a thousand things and I get a different error message at different times from each attempt. I've got all of those documented, and I imagine I'll need to post them. I'm just not doing it quite yet as sometimes I give too much information and I really feel that I'm being an idiot here, missing something simple.
I'd like to install openSUSE onto the D Drive, using the USB and PLoP to boot it. I've downloaded openSUSE's torrents for all iso's (Net, DVD and LiveKDE). In order to get those files onto the USB, I first format to FAT32. I've tried UNetBootIn, LiLi, and mounting the iso on Daemon Tools and then copy-paste into the hard drive. None of these work and they all give different errors.Is this even possible, am I wasting my time? This is getting incredibly frustrating as I've been at it for nearly a week.
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Jan 31, 2010
I might be going Back To linux after i relearn a bit and understand it more. Now i need to understand something first, How can i get Linux to boot with EFI and not Emulated BIOS?
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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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Jul 29, 2010
Today when I turned my laptop on it went to the bios like normal, and after that all I saw was a cursor.I am able to boot into a live CD and view my files on my hard driveim using Lucid Lynx. and there was a kernel update kind of recently that required a restart but i didnt do that immediately.
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Sep 15, 2010
I've bought a low-spec mini-netbook (the ALLFINE PC703) and I want to install Debian W/O a GUI on it. The trouble is I cannot get to the bios in order to boot from the USB and it says on the box (in very small print) that users cannot install other OSes then the pre-installed Windows CE. Windows CE wont run the Wubi so I can't install ubuntu on it either. How can I bypass these incoviences and get Debian up and running.
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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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