Debian :: Prevent Grub-pc From Linking To Other OSs?
Oct 25, 2010
I want to prevent grub-pc from automatically creating links to other operating systems on my laptop. Whenever there is a kernel update, grub.cfg ends with links pointing at my Windows 7 installation - I want to get rid of those links. At the moment I am doing that by manually editing the grub.cfg file and it has always worked that way. I tried to force grub-pc to avoid creating links to Windows by renaming the relevant scripts in /etc/grub.d edbarx@edbarx-pc2:/etc/grub.d$ ls 00_header 05_debian_theme 10_linux 20_linux_xen _30_os-prober _30_otheros 40_custom 41_custom README As you can see I added an underscore to the files that I don't want to be executed.
I think this can be solved by changing the file permissions of the unwanted scripts making them impossible to execute.
edbarx@edbarx-pc2:/etc/grub.d$ ls -l
total 52
-rwxr-xr-x 1 root root 6433 Aug 7 18:10 00_header
-rwxr-xr-x 1 root root 1474 Jul 16 18:46 05_debian_theme
-rwxr-xr-x 1 root root 4252 Aug 7 18:10 10_linux
[Code]....
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Jan 29, 2010
I want to use my BootIt NG boot menu. How would I go about installing Debian 5.0.3 and prevent Grub from loading into MBR? I don't remember being asked by the installer where to put Grub. Unlike Fedora where you can choose MBR or boot section of the target partition. Debian 5.0.3 -
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Apr 18, 2010
I have written an OpenGL based program which uses i.a. libjpeg that I want to link statically so I can send it to someone who doesn't have all the libraries needed installed to allow for a dynamically linked executable to run. As such I tried with giving the [b]-static[b] parameter to gcc.
Code:
x86_1$ make
gcc -O3 -c jpegloader.c
gcc --std=c99 -O3 -c --std=c99 -I/usr/include -L/usr/X11R6/lib main.c
[code].....
Why would gcc claim that I'm missing GLUT? This works perfectly fine when I do dynamic linking -- i.e. omitting the -static argument.
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Apr 1, 2011
We have one office with a simple samba server running on Lenny; not a PDC, just simple username/password authentication. It also acts as a DHCP server, NTP server, and DNS server. All clients are windows machines (mainly XP Pro, but also starting to get Win7 show up). For remote access, most users have chrooted WinSCP; OpenVPN was setup, but too slow for most AutoCAD uses (our primary application). It is still used by a few people, though.
I need to set up a similar system in another location, and need to provide access to both servers. People mainly access files stored in their own office, but will occasionally need to access files in the other office. In intend on having both run the same version, whether I stick with Lenny or put both on Squeeze.
I was thinking of setting up both servers, and then mounting the remote file system (the "other" server) over the internet, possibly via sshfs, but do not know if it is reliable enough. Or perhaps via OpenVPN connecting the servers, but then the overhead of the VPN may become an issue, adding lag time. The remote shares would then be accessible via the samba config.
Are there other options that may be easier to set up, more reliable, or more secure? We do not want a domain set up, just simple workgroups. Since many are using their personal laptops, joining them to the domain can cause some problems. It would also require more effort to add a new computer, and with the constant stream of outside consultants we use, that could get cumbersome.
My main issue: no budget beyond the low cost box for the second file server, so it has to be an open source solution from start to finish.
I'm not quite a newbie - I have quite a bit of experience setting up and maintaining basic Samba / DHCP / ssh servers - but not much beyond those. I certainly am open to learning new things and doing the research, but my head is swimming with all the options I have come across.
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Aug 20, 2010
I've got 2 HDDs. Ubuntu 10.04 is installed on the first and Windows on the second. But Windows is only on a small partition for special cases. Therefore I don't want that Windows to be included in GRUB whenever the kernel is updated or whenever I run update-grub. If I really want to start Windows, I am able to do so via a menu from BIOS.Is it possible to permanently exclude Windows from grub or disable GRUB's autosearching for other operating systems?
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Jan 23, 2011
I'm trying to build a shared library, and am receiving several undefined reference linking errors. Specifically, ffmpeg linked with libx264. I'm aware that this is not an appropriate forum for questions specific to ffmpeg or libx264. In order for one library / application (ffmpeg) to reference another library (libx264), the linker has to know where the referenced library (libx264.so) is located in the file system.
I'm pretty sure the linker knows where libx264.so is, because I receive a different error message when I run ffmpeg's configure script if the linker can't find libx264.so. In general, should running the install target of a make file be preferred over specifying the appropriate paths in the CFLAGS and LDFLAGS environment variables? I've tried both, and it doesn't seem to make a difference in regard to my error which method I choose.
How exactly is a library referenced? My error messages are
/root/ffmpeg/libavcodec/libavcodec.so: undefined reference to `d26'
/root/ffmpeg/libavcodec/libavcodec.so: undefined reference to `d22'
/root/ffmpeg/libavcodec/libavcodec.so: undefined reference to `d2'
/root/ffmpeg/libavcodec/libavcodec.so: undefined reference to `d20'
/root/ffmpeg/libavcodec/libavcodec.so: undefined reference to `d24'
/root/ffmpeg/libavcodec/libavcodec.so: undefined reference to `d0'
/root/ffmpeg/libavcodec/libavcodec.so: undefined reference to `q1'
If I can find out what library 'd26', 'd22', etc. are declared in, I should be able to resolve the undefined references. What exactly are 'd26', 'd22', etc.? Are these functions, classes, or something else? How can I find out what functions / classes are defined in a particular library?
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Jun 17, 2010
Is there a method to prevent the grub installer from overwriting the MBR pointer when grub or the kernel is updated? I'm running a multiboot system and when Fedora's grub installs, then OpenSolaris' partition isn't included in the bootlist and Ubuntu's menu line has a chainloader line that doesn't resolve correctly, requiring a hand edit.I may try to do a chmod 444 grub-install , but I'm not so sure what the reprocussions may be.
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May 18, 2011
The ability to manually boot using the Grub command-line constitutes a big security risk in Linux, IMO.Any OS can be booted in this manner from a PXE-LAN, USB, or CD/DVD drive, circumventing BIOS-imposed boot restrictions. (Once a foreign OS is booted, of course, it can be used to access any part of an unencrypted hard drive.) Placing passwords or locking menu items (in the Grub configuration files) does not prevent a user from booting manually using commands entered at the grub command-line.
As it stands now, when presented with the Grub menu (or after bringing up a hidden Grub menu with the "ESC" key), a user only needs to hit "c" to enter the Grub command-line mode to facilitate any type of bootup whatsoever. (They can then enter manually the Grub commands to boot an OS on any device.) This is extremely insecure and allows any passerby to boot the computer with a few keystrokes and a bootable USB drive. How do I configure Grub so that it will require a password in order to enter the command-line mode (and thereby restrict boot options to the menu, which can then be password protected/locked) ?
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May 3, 2014
I would like to send files from my verizon env3 feature phone to my computer via bluetooth, but I can't find anyplace to input a pin. Both the computer and phone offer pins but they never give me a way to input a pin. I am cautious about linking without one because I don't want my computer hacked.
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Mar 9, 2011
Has anyone tried encrypting the boot partition to prevent the kernel from being modified. Iv tried following this but I'm running into issues when building. [URL] Im using the source from bzr checkout [URL] Last time I tried I screwed grub and it wouldnt boot.
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May 28, 2010
Alright, first Squeeze wouldn't create an initial RAM disk even with "--initrd" specified. Now I don't need one and it's creating one for me even though I don't want one! How do I stop this? I'm beginning to feel like I am using Windows in the sense that it's doing things on its own. Don't make me a RAM disk unless I say so!
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Jul 24, 2010
i would like to prevent all users other than the user "parker" on my system from using the su or sudo commands. I have not attempted to modify the sudoers file so it just contains the standard root ALL = (ALL) ALL.
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Nov 18, 2010
I have a PC that have a new Ethernet card that is not yet supported by Debian/Lenny.I downloaded the latests driver from the manufacturer and after a make;make install everything works like a charm.My problem is that one day after a probable update, Debian overrided my new driver by an other one causing my Ethernet card to shut down.After an other make install, everything work again like it should..But how do i do to prevent Debian to update my driver ?
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Feb 8, 2011
Howto create usb-hdd using live-helper to prevent xfce desktop from any changes? Normal user shouldn't change any icon on the desktop.
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Dec 30, 2010
If there is a simple way to prevent accidental shutdown when the following situation occurs:
Sometimes, I log in on my father's computer to run some administrations' tasks (updates...). For that, I use SSH since I'm frequently far from my parents and what I want is to prevent a shutdown run by my father. Of course, he should be able to turn off by himself if nobody else is connected.
Molly-Guard allows to prevent distant shutdown, my request is a kind of complementary software.
Does anyone know a project which could fit with this request? Do you have simple ideas to write a short code I know bash, perl, python...
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Dec 16, 2010
A few days ago I had a problem with my screen resolution after a safe-upgrade. I struggled a little but I finally downgraded and pinned the intel driver. But now, each time I turn my computer on I get a notification of "1 update aviable" I've checked and the update is correctly pinned (I used keep and forbid-version), it does not upgrade. As you can see, this is not critical, but I would apreciate a fix.
Details:
Debian sqeeze/sid with KDE4 on Acer Aspire One ZG5. I manage my programs with aptitude.
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Jan 7, 2011
We have the following server at collocation: [URL]
Provider's technicians were working for 3 hrs but finally were unable to set up hardware RAID1 on it.
What could prevent them from doing it? Is it difficult to set up RAID1? It is mentionned as basic function in specifications.
They said debian not booting after raid configured...
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Jun 29, 2010
In Gnome, I don't like how Deb default GUI navigator opens a new window every time you navigate to a lower level. Results in loads of windows open. How to change this behaviour?
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Apr 1, 2016
I'm trying to prevent GDM/Gnome from turning the screen off prior to login. It's current behavior, under 3.14, slowly fades the screen out and then enters DPMS mode after 10 minutes.I have zeroed out the following dconf settings, under both root and user, but the default behavior persists.
org.gnome.desktop.session idle-delay
org.gnome.settings-daemon.plugins.power sleep-inactive-ac-timeout
org.gnome.settings-daemon.plugins.power sleep-inactive-battery-timeout
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Jul 27, 2011
I have a ppp0 entry with post-up options like this
mapping ppp0
map none photon-plus motorola
map timeout: 12
## map init-time: 12 # for slow drivers
[code]...
If I comment those off then no such problem, hence some how ppp0 executed automatically and there is no [auto ppp0] any where. How can I stop this forcefully ?
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Oct 28, 2015
So I'm trying to change the primary click on my touch-pad to left-handed with xmodmap -e "pointer = 3 2 1". it changed successfully, but there is one functionality I'd like changed. The touch pad itself changes to secondary too, but I want it to remain as primary.
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Feb 6, 2011
I'm running Squeeze with Gnome & GDM3. After 1 h my laptop automatically suspends while in the login screen (GDM3; so no user login). I want to prevent that, since this machine also has a server role. how this can be prevented?
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Apr 21, 2011
Is it possible to have a user in Ubuntu/Debian that does not have access to synaptic, apt-get, dpkg and cannot even download anything from the Web, but has root privileges otherwise?
Original post (above translated by aimar) code...
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Apr 10, 2010
they change positions every time and locking them only makes it harder for me to arrange them back.
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Feb 14, 2010
I have XP and win 7. I want to triple boot with Debian.When I install, grub finds win 7 and XP and says everything should be fine, but then when I boot, only debian appears.This was fixed by doing update-grub2 after logging in.Now, I have win 7 bootloader as an option. However, when I boot into XP, and then reboot, grub disappers. he screen just says welcome to grub and then a blinking cursor.
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Dec 15, 2010
UUIDs make fstab hard to read, so.. Is it possible to use udev rules to prevent HDs to change device, instead of using UUID in /etc/fstab?
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Sep 21, 2010
I was installing sqeeze i386 on my laptop VOSTRO 1400 and got this the 'grub-pc' package failed to install into /target/. without the GRUB boot loader, the installed system will not boot.
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Feb 4, 2010
I tried to install Open Office following a guide in OpenOffice.org but after several attempts debian refused to boot properly. I decided to re-install Debian 5.0. When we came to the installation of the boot loader GRUB refused to be installed. I stopped the installation expecting to go back to the beginning. But now it tries to boot saying:Grub loading stage 1.5.
Grub loading, please wait...
Error 15
This is an old Toshiba 3110 with Windows 98SE installed which I have successfully customized and do not want to loose. What can I do to get back into W98SE and then re-install Debian properly?
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Jul 19, 2010
how to replace grub2 with grub-legacy hassle-free? I mean, is there any danger in doing the following procedure: purging grub2 and installing the legacy version after that? I'm using Squeeze system with ext4.
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Feb 2, 2011
Is it possible to prevent "unable to connect" messages from appearing instead of blocked web-content? I am using a huge hosts file to block unwanted web content from appearing. The attachment illustrates what I am referring to.
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