Ubuntu :: Using Grub2 To Select Between 2 Different Raids?
Aug 7, 2010
I am currently running a system that has Windows 7 and Ubuntu 10.04 running on separate raids. Here is an outline of my system.
Raid 1:
OS: Windows 7
Raid Controller: Intel ICH5R
Raid Type: 1 (Mirror)
# of Disks: 2
Disk Type: Sata HDDs
[Code]...
I would have liked to put both raids on the same controller but Windows XP/Vista/7 will sometimes throw up a blue screen when a single controller handles two independent raids. My setup prevents this issue. The good news is that I was able to get both of the raids up and running without much difficulty.
Right now I can only access my Ubuntu raid by going into the bios on startup and changing the boot order. Needless to say, this has become somewhat tiresome. It would be much simpler if I could use Grub2 to select between operating systems upon boot. While I know the process of installing Grub2 on a dual-booted system is relatively painless, I imagine my setup would be more complex.
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Jul 27, 2010
I generally use Slackware but I have also installed Ubuntu. Because of Ubuntu I have also Grub2 installed. My problem now is, that I have wireless keyboard and I am not able to select any OS in Grub2. But my wireless mouse and keyboard have full functionality in the OS itself.
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Oct 7, 2010
Fake raid hard drives are becoming more common and I am wondering how to set them up. This is what I have been told, and you are welcome to disagree (as long as we can agree to disagree).From what I have seen and heard it appears to me that to set up a fake raid in Linux you partition the separate volumes and format them, but when you install your operating system you have to go into fstab and merge the separate volumes into the root partition.
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Feb 14, 2010
I have recently installed debian on to a system that I built as a media server. It has 4 1TB HDDs in the machine and each drive was partitions as follows:
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I had the /boot running as a raid 1 so i could make backups and the swap was running raid 0 for 4 GB of swap striped. The rest was all setup as a raid 5.I setup the system using mdadm and all worked out perfect. The system worked fine on reboot and all the raids showed no degration on them. However when the debian update icon came up on the screen came up I opened it and it said I needed some updates which was fine. So it did the updates to my system. system was still fine.
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Aug 15, 2011
Having alot of trouble searching for answers as it just pulls up irrelivnent info.I have 2 HDD's id like to show as one virtual disk or mount them both to one folder, but without raid so if i dies the other will be ok. Is this something i can achieve with symbolic links or JBOD raids? or other options ^_^
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Mar 7, 2010
i initilally installed ubuntu 9.10 then installed windows 7 ,then i recovered grub2 using livecd as told in the post [URL] i did "sudo update-grub" and got windows 7 menu entry but when i select that entry windows 7 does not load but the grub2 is reloaded again.
i cant boot to windows 7.
Windows 7 have 100 mb partition "System Reserved" the grub2 points to that partition but still windows 7 not loaded.
sudo fdisk -l
Disk /dev/sda: 320.1 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x3c3a81f5
[Code]....
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May 17, 2010
I went through so many post but I haven't found the proper answer yet hope you have an Idea1. Grub2 saves only Linux OS as last selected no Windows OS2.It is possible to boot into a cdrom (drive)?
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Jul 11, 2011
I installed Fedora 15, which was my first real departure from Debian based Linux OSs. I absolutely love the new Gnome 3, and was able to configure F15 to work as I wanted it to. On rebooting I realized that there was no boot loader screen, that F15 just booted and didn't give me a choice as to which OS I wanted to use. Eventually I was able to configure grub to let me see the boot loader and added my old boot loader as a choice. This worked well, maybe not a perfect solution, but it worked. This weekend I installed LMDE (Linux Mint Debian Edition) to another HDD. LMDE uses grub2 and after the install F15 was not recognized.
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Jan 24, 2011
I want to load grub2 from grub4dos.I want to load directly the grub2 core. I know how to load first 512 bytes from some patition by chainloader and load grub2, but what I need is to load directly grub2 core without passing by bootstriping code (first 512 bytes).So, my first boot manager is grub4dos, then I can load grub2 and later I load Ubuntu. But I think I have to edit --set-root
What I dont know is how.
In hdd 0,7 (sda8) I have Ubuntu 10.10 and /boot/grub/core.img is in sda8 (hd0.7)
I tried this way:
Code:
title grub2
find --set-root /boot/grub/core.img
kernel /boot/grub/core.img
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Feb 1, 2011
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Apr 28, 2011
Should I select 32 or 64 bit version of 11.04? I've been using 64 bit Karmic and Maverick but I see Ubuntu recommends the 32 bit version of 11.04. How come they recommend 32 and not 64 bit? Which one is best?
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Jan 8, 2010
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May 24, 2010
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May 28, 2010
So I've installed Ubuntu before on this machine, but this time around with Lucid, it's just not working.
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I really need this installed and cant use the live version where I'm posting from now.
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Jun 21, 2010
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Jul 5, 2010
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Aug 6, 2010
I am using xgraph with ns2. Is there any provision in xgraph to select columns. Man page didnt say anything about it.
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[] option 2
[] option 3
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Oct 15, 2010
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Nov 13, 2010
I am trying to use an Apple BT keyboard with a new installation of 10.04.Using Bluetooth Preferences, I discovered the keyboard, and paired with it. No problem with pairing. If I click on the BT icon in the top panel, it indicates that the keyboard is connected. But any text typed on on keyboard does not appear on screen. I opened Keyboard Settings, thinking that I might have to select the connected BT keyboard as the input device. Nothing there. Is there another preference somewhere that has to be set for the BT keyboard to actually work as an input device (as opposed to simply being paired)? My USB keyboard is still connected (and is working). Perhap Ubuntu only tolerates one keyboard device at a time?
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Apr 7, 2011
I am running Elementary OS Jupiter which is Ubuntu 10.10. When I get to my login screen, it does not have the bar at the bottom which lets me select my desktop session.
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Jun 5, 2011
When I connect to my ubuntu machine at work via NX (shadowing the existing session), I cannot select any text using the shift key. Shift key itself works (I can use it to capitalize letters for instance). It is just that arrow keys, page down/up keys, home/end does not work with shift. Without shift, they work (so I can navigate, just cant select). I tried running xev to see the key events. In the local X11 session (XQuartz), keeping shift key pressed and pressing home prints the expected key press/release events. However, in the NX session, pressing shift prints "key pressed Shift_L" but then pressing home/end/page up/page down prints nothing.
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Jul 28, 2011
I have two user accounts. "xubuntu", an admin, and "theseconduser", with regular desktop permissions
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I've tried the switch from pulseaudio to alsa; it made both accounts unable to use the sound card, so I reverted
I haven't included any CLI output here since I'm not exactly sure what to post / whether I should post it. Feel free to ask away.
I'm able to alter settings etc through Mixer; I have 4 available options in the "Sound card" dropdown there.
how to get sound back into this account!
[URL]
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Feb 4, 2011
when i print a document and select only certain pages the printout still prints all thepages. this is very annoying, since i have to print everything from anther compusing ubuntu 10.04 with latest updates.
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Jul 29, 2011
it has installed correctly and asked me to reboot my computer so i did but it automatically boots Windows7 and i dont seem to get a choice, i read up on GRUB 1.99 and it says i have to use shift or esc to run it to select Ubuntu, i did this but shift didnt work, tryed esc but i only caught a glimpse of what i think was GRUB before the computer restarted.
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