Ubuntu Installation :: GRUB Menu, And Can't Boot To The Real-time Kernel?
Mar 14, 2010
I'm a very new Linux user, so speak slowly and don't use big words. I installed Karmic from the Live CD. It is the only OS in use on this system. I then upgraded to Ubuntu Studio using the instructions found on the wiki.
On bootup, I get a brief message stating "GRUB loading" and then the system automatically boots to the generic kernel. No GRUB menu is ever displayed. I would like the option to boot to the real-time kernel, but I have no idea how to edit the appropriate files. I've done a fair amount of reading on the subject, but I find very little information relating directly to the real-time kernel, and so I still feel like I'm too green to do it without messing something up.
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Apr 26, 2010
I want to try out the realtime kernel to get my audio latency down. I have installed the realtime kernel packages according to the Ubuntu Studio preparation documentation here - I have also run sudo update-grubHowever, when I boot up, the realtime kernel option does not show up in grub2. The current kernel I am using is 2.6.31-17, but the only options in grub for it are -386 and -generic.
There is a previous entry of 2.6.31-9-rt which I had attempted to use previously (sometime last year) but if I select it, it doesn't even boot at all.I checked my /boot directory and there is no vmlinuz-2.6.31-17-rt file .... Which I am assuming is why it doesn't show up or add when I run update-grub ... But I am currently at a loss for how to actually get the 2.6.31-17 realtime kernel file and add it to grub2.
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Jan 20, 2010
I was wondering if there's a way for me to get real-time kernel support on regular Ubuntu 9.10 through some sort of update. I know Ubuntu Studio has a real-time kernel, but I'd prefer not to use it. I'm a fan of the original Ubuntu.
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Feb 10, 2010
I seem to have determined a few other things about my "only gets as far as a GRUB command line" problem:To recap, sda3 (GRUB hd0,2) is the main Linux partition; sda9 (GRUB hd0,8) is the boot partition.GRUB is 0.92.Installation was from an 8.04LTS live CD (at least, that's what the envelope says it is)/"/boot/grub" (i.e., "/grub" on sd9/hd0,8) contains a "menu.lst" file. I modified it (had to do a "sudo gedit" from a command line!) to (1) comment out the line that hides the boot menu, (2) change the timeout from 3 seconds to 90, and (3) add a menu line based on my succesful manual IPL of DOS.
It still boots to a GRUB command line. If I do a "configfile /grub/menu.lst," a boot menu comes up. DOS will successfully IPL, but Linux still gets a "no setup signature found," (ditto for "recovery mode"), which suggests either a bad kernel, or a kernel that's too big for the GRUB to handle.Why would it be finding its way to grub, but not finding the boot menu file?Why would the live CD come up just fine, yet the GRUB and kernel it installs fail?
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Sep 9, 2010
if I want to use an rt kernel in ubuntu studio, how do i use the kernel? say for instance, Ubuntu studio is installed with generic kernel.then i download the rt kernel.
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Dec 29, 2010
Just installed a real time kernel on my new computer so I can record music. My problem is that I have no GUI. I noted that I would not when fglrx drivers could not be installed/applied to the new kernel when installing it.
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Sep 25, 2010
I have the latest release of Lucid Lynx installed. I want to try out audio recording on Linux so I want to know if it's possible to use a real time kernel with Lucid. So I installed the 2.6.31 real time kernel. It shows up in GRUB, but when I boot it gives me the message:
mounting none on /dev failed No such device
It then takes me to the login screen, and once I enter my password it just takes me back to the login.
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Jan 31, 2010
In my Red Hat 7.2 , the /boot/grub/grub.conf has the following data :
But when I reboot my Red Hat server , I don't see the Grub menu to say edit the boot kernel .
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Sep 8, 2010
install Xenomai on real-time kernel (With PREEMPT_RT)?
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Dec 22, 2010
The first is I seem to have 3 GRUB installs. So whilst I update the one from my live session, the change does not appear in the boot up menu. I had installed 10.10 from a CD into a different partition (sda6), but that will not boot, so I have just deleted this and done another grub install and update. The kernel I am using has just been updated from 10.04 to 10.10 too, and it is this that I use and the Grub I have been working on (sda5).
[Code]...
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Jul 6, 2011
In regards to compiling a custom kernel:
When using make menuconfig - under Device Drivers --> Character Devices --> there should be an option with the label "Enhanced Real Time Clock Support" (CONFIG_JS_RTC).
The problem is that this option seems to only show up while using the menu method when other options are either enabled or disabled and I've entirely forgotten what should be what. I swear fingered it out once.
This is on an older computer (P4) so HPET is no good.
You would think that disabling the HPET option would enable the RTC option but that does not appear to be the case.
I understand I can just add the option to the .config file and avoid this hassle but I'm very interested to know how to make this work.
To show my appreciation I will do something nice for you such as call you a nice name or tell you that you are pretty (or ugly if that's what you prefer).
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Sep 25, 2010
After having patched the kernel with an ABI-patch I cannot find it in the grub2-Menu OS: Ubuntu 10.04 LTS in /boot I can see: the original and the new config-file
Quote:
config-2.6.30.1ABI-2.6.29.1_4
config-2.6.32-21-generic
The original and new vmlinuz-file
Quote:
vmlinuz-2.6.32-21-generic
vmlinuz-2.6.30.1ABI-2.6.29.1_4
[Code]....
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Mar 23, 2010
what the recommended way to set up real-time (or near real-time) folder synchronization among 2+ servers. I looked a rsync but that doesn't sound real-time and it looks like its something that you might put in a cron once an hour.
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May 2, 2011
I installed 11.04 after Windows 7. when the GRUB boot menu starts up there is an option for Win 7 boot but it will not boot windows. When that option is selected the screen changes colour for 2 seconds and then reverts to the GRUB menu. Ubuntu boots fine.I downloaded the Boot Info Script and ran it, the results are
Code:
Boot Info Script 0.55 dated February 15th, 2010
============================= Boot Info Summary: ==============================[code].....
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Mar 8, 2010
I use Linux Mint, and I installed a linux-rt from the repository, but when I restart my computer no grub menu shows up. It just boots linux mint. How can I get it to show the menu so I can choose the real time kernel?
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Jul 26, 2010
I've been having a problem on my AMD based machine, 4cpu, gigabyte ga-ma78gm-s2h Mobo, 8GB mem, two 2 terabyte Sata HDs.One thing I've found is that any kernel after 2.6.32-17 has a randomness at boot time whether the system will completely boot or not.
For instance just today I downloaded and installed 2.6.32-24
It fails to boot (I've tried cold boot, warm boot).Running its repair also fails to completely boot.My experience is that if I keep trying it "may" eventually boot but I believe there was some change after 2.6.32-17-generic that's causing the problem.Because as with 2.6.32.23... which also fails to complete bootup many times... eventually my guess is that 2.6.32.24 will also boot "sometimes".But why does 2.6.32.17 always boot for me? Something changed and its not my setup.
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Jul 5, 2011
I've installed 11.04 on my laptop (dual boot with Win7). It goes through the grub boot menu and boots in ubuntu but displays ~inch wide band near the top, nothing else. I assume it is a display issue (it has an ATI mobile Radeon HD 3870 X2 card) but can't seem to resolve problem. I can boot into Windows via the menu. In the grub menu I can boot into the command line (grub>) but can't seem to make progress beyond that. Within this grub interface, it won't take terminal commands.
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Feb 24, 2010
I created filesystem XFS on partition hda8 with subvolume real-time on partition hda5: Code: mkfs.xfs -r rtdev=/dev/hda5 /dev/hda8 and i mounted it: Code: mount -t xfs -o rtdev=/dev/hda5 /dev/hda8 /xfs But I don't know how can I use this partition hda5 with subvolume real-time. I don't know how to create directories, copy files to it and another. Thanks for all answers!
EDIT:in manual it is writen: The realtime section is used to store the data of realtime files.These files had an attribute bit set through xfsctl(3) after file creation, before any data was written to the file.
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May 3, 2010
It would be nice to get a sticky thread up for dual boot installation issues. It seems like this is a very common problem with the upgrade from 9.10 to 10.04.
I was finally able to solve my issue dual booting 10.04 and Windows XP Home at this thread.
[URL]
I had to reinstall Grub2 and run update-grub.
Then I had to run Rescue on my XP disk. Once to the DOS command line I ran the following command:
C:Windows>fixboot c:
I rebooted and now all is well. I can boot to Ubuntu 10.04 or Windows XP from my Grub menu.
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May 7, 2010
I used to be a pro at editing Grub's menu.lst file so I could have my menu look clean, simple, and easy to read. Now that I have set up 10.04 (Working beautifully now after a couple setbacks) the menu.lst file is no longer where it used to be (/boot/grub/menu.lst)
How do I edit my boot menu now?
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Feb 23, 2011
I have Windows XP SP3 running on my Desktop PC and wish to dual boot it with Ubuntu 10.10. This isn't the issue as I can do this and it gives me the GRUB menu but selecting Windows XP won't do anything - or so it seems How long should it take to boot into Windows from the GRUB menu?
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Mar 8, 2011
I've got an old Dell Precision 670 which has a SCSI disk. I installed 10.04 and everything worked fine - I could boot into 10.04 from the GRUB menu. I later added an IDE disk and installed WinXP Pro on it.
When I ran 'sudo update-grub', Lucid discovered the IDE disk and added a WinXP Pro entry to the GRUB menu. Now, though I can still boot 10.04 from the GRUB menu, I can't boot WinXP - the screen goes blank, and I have to hit Ctrl-Alt-Del to restart.
For what it's worth, here are the results of using boot_info_script055.sh:
Code:
Boot Info Script 0.55 dated February 15th, 2010
============================= Boot Info Summary: ==============================
=> Windows is installed in the MBR of /dev/sda
=> Grub 2 is installed in the MBR of /dev/sdb and looks on the same drive in
partition #1 for /boot/grub.
[Code]....
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Jun 20, 2011
I have installed BackTrack 5 and I have set GRUB up:
Code:
root (hd1,4)
setup (hd1)
However, the GRUB prompt appears at boot instead of the GRUB menu. However, when I boot from the Live USB, the GRUB menu works fine. Here are the contents of the grub.cfg:
Code:
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by /usr/sbin/grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
# .....
The reason I want the GRUB menu to show up of because I would like to dual-boot BackTrack 5 with Windows 7.
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Sep 23, 2010
I mucked things up a bit--
1) I had only windows on my drive.
2) Using 10.04 on USB, I made a 10gb ext3 partition and a 1gb swap area and installed 10.04. No problems at all using grub2, and the GUI is nice for dummies like me.
3) I got antsy so I made an 8gb partition and installed 8.04 on it. It automatically installed grub (the old grub).
Now when I boot my machine the Old Grub loads, not Grub2. I can select 8.04, 10.04, or XP no problem. When I select 10.04 and use the GUI I can see 10.04, 8.04, and XP, but things are in a different order (clearly the grub2 order).
Questions:
1) How can I get grub2 to take over booting? (I like the GUI)
2) I'd like to install puppy linux too, but I'm afraid of really screwing things up. Can someone recommend a safe way of installing it (besides just running from a USB- I've had mixed luck using USB OS's over long timeframes).
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Sep 21, 2010
I installed on my system "window xp" and "rhel4 update 2" but due to some problem I removed my windows xp O/S and installed that again after that grub boot menu is not coming so I can't log in properly in linux system.C
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Nov 24, 2010
i have ubuntu 10.04 and xp installed in two different hard disc partitions. everything was fine until i came from vacation and found that after turning on my pc it gets hang as soon as the grub menu with duel boot option appears. i cant do anything at that stage, just nothing.keyboard doesn't work also. here one thing to be mentioned that for last few days my pc used to hang frequently in ubuntu 10.04 and then i had no option left but to restart my pc.
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Jul 3, 2011
Changed the partition sizes = all ok
boot to F15 = ok
#grub-install /dev/sda = seemed ok but XP not shown
[code]....
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Mar 5, 2009
I have a single hdd, on which I do not require windows OS, just (multiple) linux; it is just a dev mule, exploratory... Have read the saikee methods, and much more... almost there Initial installs were with mint linux 4, just used ml6
partitioned with parted magic
partition table:
Device Boot Start End Blocks Id System
/dev/hda1 * 1 64 514048+ 6 FAT16
/dev/hda2 65 2614 20482875 83 Linux
[Code]....
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Mar 18, 2011
I installed F14 from my usb according to the wiki page using unetbootin. The usb boots perfectly and i get a working F14 system. I partitioned my HD with gparted and got a /,/home and swap partition, then used the installer to install the system using them. The installer finishes without a problem and ask me to reboot. When I reboot , there is a blank black screen. No grub menu , no fedora loading. I reboot with the usb and the partitions are full with the files from F14 , there is no xorg.log in the /var/log/ so f14 doesn't even start so the problem seems to be with grub.
I check the grub.conf in /boot/ , i set the timeout to 5 secs , i check that the kernel is using nomodeset (according to this wiki page there is a problem with ati), xorg.conf is using vesa as a driver and I reinstall grub with grub-install with no problems.My notebook is a acer aspire 5552 , i don't think is a hardware problem because I've used arch and opensuse with no problems in it. Fedora seems a nice distro , but this error is preventing me from using it.
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Nov 29, 2010
i am trying to change the boot order on the GRUB menu so that the countdown automatically starts on an older kernel. From what i can see all the solutions on the web want me to edit the /boot/grub/menu.lst file. The problem is that i don't have one. Someone also mentioned that if i don't have a menu.lst file then i should look for the grub.conf file. I don't have on of those either. The closest thing in /boot/grub is grub.cfg but that looks nothing like the descriptions i have heard of /boot/grub/menu.lst file
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