Ubuntu :: Grub2 Clean Up And Duplication?
Nov 11, 2010
this is my first post here .I have two issues related to grub2 I upgraded recently from ubuntu 8 to 10.04 and upgraded grub 0.98 to 1.98. 1-How to prevent Grub from detecting one of Windows installations? or how does grub detect Windows. I have 2 hdds, they were backup of each other. but no more, I deleted one Windows by deleting most of the files so therefore I don't need it to be present in Grub 2 menu. How do I delete this? any suggestion? 2-For some reason grub2 only work correctly from sdb , even though I chose to install grub2 to sda too, but it seems grub is trying to find grub files on the same hard disk instead of on sdb, therefore it goes into grub rescue mode with error "file not found" . I set my computer to boot from sdb for now. but I would like to learn how to make sda's grub work. before it used to work with grub 0.98.
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Aug 28, 2010
recently i had a crush on my computer caused by a power surge, had to reinstall the os since i couldnt boot.
the installation went clean and everything is working very well since but i am having a strange issue with grub - its missing ?
when i boot the computer start with default kernel and no grub menu is visual for me to choose from.
i tried to purge and reinstall grub2 grub-common and grub-pc packages, tried various things found on the grub2 faq pages including booting from livecd and reinstalling.
it appears as grub is installed correctly but its not running at boot ? dunno ?
i'm using ubuntu 10.04.1 LTS x64 on intel E2180 with 2gb ram.
i really dont know what else to try or what can be the cause for this ?
ps: here is fdisk -l
Disk /dev/sda: 123.5 GB, 123522416640 bytes
255 heads, 63 sectors/track, 15017 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
[Code].....
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May 6, 2010
cant I simply take a working ubuntu hard drive and dd copy it onto another disk. Then put the disk in the other pc and it will work?
This way I could configure a machine at home, take the disk with me and use it at a place with no internet access.
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Apr 28, 2010
I have both ubuntu and kde-desktop installed, and after trying KDM, switched back to GDM which worked fine for a while (although KDE changed my other gnome settings like usplash and cursors which took a while to change back). A day later, though, when I start up my system, the screen flickers a few times then shows me a message that an x-server is already running, so hit no to try loading it on '0' again or yes to try another number.
If I hit no, it will briefly show me the KDE login screen refresh a few times and go back to the menu. If I hit yes, it refreshes about 7 times and finally shows the gnome login screen. This process takes a long time and I'm not sure is great for my screen.
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Mar 3, 2010
i've checked the link, and it makes it better. but it doesn't include all the information. i'll continue searching the internet. However i have seen an example of creating a fd:
Code:
exec 5<&1
echo "TEST" >&5
exec 5>&-
as in the page, this was intended to redirect the stdout to the fd 5 and create it, and close it. i have the following questions:- what is exactly the meaning of second command? is it to redirect the command stdout "test" to the fd 5? and how i can see the contents of the fd 5? - in the first command, why the < is used instead if > and what is the difference between the below two commands as in the info bash *Redirection section It will be helpful if anyone could include a graph for file descriptor before and after different command execution.
[Code]...
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Oct 23, 2009
I got a folder containing 20,0000 files (and will be more later), each of this file contains a single URL. What I am trying to do is to do statistics on number of duplicated URLs (file with same content) accumulated, say, from September to October by each day. For example, if file A was created in Sep 1st has a same content with file B created in Sep 15th, then we add 1 to number of duplication on Sep 15th (not Sep 1st). Currently I got a way to do it (in perl) as below:
(1) Read all files inside the folder, print out file content, and modified time into a big file in the format:
Code:
[URL] [month] [day]
(2) Sort the file by month then by day
(3) Then Create two hash : date and content
And then read url from each line into a hash 'content' from the big file (key is url, value left undef), for each new read url found in hash 'content', a duplication is detected, so mark '$date{$month.$day}++' The algorithm could be working but may take too long... so I am wondering if there is some easier way to do that besides hashes.
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Mar 9, 2011
We're trying to take an existing system running multipathed SAN boot disks, duplicate that boot disk to another system volume, and boot a second system up with all the same parts running like the first system (think: cloning the system).However, multipathing is broke on the second system 'm sure I'm forgetting something stupid here after thecloning).Details:We have a freshly installed RHEL6 on IBM PPCThis is a boot off of a SAN volume with two paths. Installation went great - multipathing was auto-detected and used underneath the usual LVMs for the boot volumes. Looks and works great:
Code:
[root@goldimage dev]# df -k
Filesystem 1K-blocks Used Available Use% Mounted on
[code]....
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Oct 13, 2010
I'm beginning to write a custom RTP implementation and want to test its resilience to UDP traffic. I've searched on the web and all the links I can find are for analysing actual traffic, not generating it or messing it up.
Does anyone know of any software (preferably free software) that will, for example, take actual UDP traffic and drop packets, duplicate some and make some arrive late/out of sequence?
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Dec 18, 2010
I have problem with my printer HP Deskjet D1460. My printer is configured and works. When I send a file on the print, the printer clings a sheet of paper and starts to print, but a paper as was clean so clean and remains, after printing.
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Oct 11, 2010
I configured cron to clean my /tmp directory, should I also add other locations to clean and especially /var/tmp.
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Feb 4, 2010
Is there any difference between apt-get clean and aptitude clean? Do they both remove the same caches? Should I know any other commands for cleaning up wasted space on my ubuntu laptop?
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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.
Two questions: Is there a way for grub2 to see F15? or Can F15 be installed using grub2? I really don't mind re-installing from scratch.
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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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May 10, 2010
I,m running ubuntu 10.04 and prior to that have ran a Linux op system for about a year now. I,m thinking its time to clean up amd tweak my PC. Any ideas how I can do this? In the other operating a defrag and :c drive "Clean Up" seemed to worked.
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May 13, 2010
I've had ubuntu installed on this computer, and I've updated it all the way up to Lucid from Dapper over the years. I'd like to clean out settings and old programs that might not be needed anymore to make it more like a fresh install, as I've noticed some problems that people with fresh installs don't seem to have. Two indicators for Empathy Computer Janitor freezes Weird system tools and wine entries, etc.
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Aug 11, 2010
I'm trying to get Samba running, but I accidentally deleted smb.conf. I tried reinstalling Samba through apt-get, but it does not create another smb.conf (which it did when I first installed it). I'm pretty new to ubuntu, and I'm just wondering if anybody knows how to get a completely clean install.
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Aug 28, 2010
I have used SUse some time now, and I return now to Ubuntu. In Yast cron jobs can be edited easily in order to keep the tmp-partition clean. I would like to do the same in ubuntu, as I know a full tmp partition prevents the system from booting. So, how to do it? I have tmpreaper installed, but this soft is not as handy as Yast. Tmpreaper.conf can indeed be edited, but I have no idea how. It is always "read only".
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Jan 19, 2011
I'm trying to learn more about managing my ubuntu system and I was wondering what the difference is between apt-get clean and apt-get autoclean; and if there is a general rule of thumb on when to use them.
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May 22, 2011
I think i wanted to do something bigger than me...and now i want to clean everything and going back...
here it's what i did on this page: http://ubuntumanual.org/posts/126/ho...sors-in-ubuntu
i think i load a module when ubuntu startup,installed lm-sensors and made an executable script? right? how can i get everything back and cleaning ?
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May 30, 2011
I see sometimes when you're compiling something to run, you do a make, install and clean. What exactly does clean do?
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Jul 10, 2011
I've been using my 2TB external hard drive with Ubuntu with no problems for a while now, but recently there is one folder on the drive that I cannot access. Whenever I try to open the folder I get "error stating file: Input/output error". I scoured the forums and noticed that the folder might just be dirty because I failed to use the Windows option to "safely unplug" the drive (bolstered by the fact that neither avast! or Malwarebites found anything). My question is how do I "clean" the folder so I can use it again?
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Jan 3, 2010
I need to change the language used by Ubuntu 8.10 (updated to 9.04) from English to Spanish. This does not refer to the keybord distribution. What must I do?Alternatively, I could remove Ubuntu so as to start from scratch again with a 9.10 CD. But I don't know how to make a clean uninstall. The 80 GB HD contains as well windows XP and boots with Grub. Originally the present Ubuntu was installed to an unallocated space left on purpose to receive Linux. Ideally this space ought to return to that condition to be able to receive the new installation.
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Jan 24, 2010
I read somewhere that i can clean cache memory with this comand:
Code:
david@lap:~$ sudo echo 3 > /proc/sys/vm/drop_caches
bash: /proc/sys/vm/drop_caches: Permission denied
The problem is that permission is denied as you see...
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Mar 2, 2010
I recently tried the package "pysdm" to mount a data partition but didn't care for the way it handled things so I opted for editing fstab which I'm much more satisfied with.I did then purge pysdem and it's config files but something lingered, finally I got things working by using a UUID designation in fstab but I know there's an old symlink to a /dev/sdb7 that has since been deleted and later recreated with a new UUID.
I have "googled" enough to find that the package "fslint" should be able to handle this but since one gui got me in trouble I'm reluctant to use another, I'd prefer just being able to find where symlinks live and ripping them out by the short hairs
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Mar 9, 2010
My Ubuntu partition is just about out of memory, and I need to do some cleaning of the windows.I couldn't find a lot on here (maybe I wasn't using the right terms), and when I looked on google it seemed like the only results I found were from people that wanted to remove linux from windows.What I'd like to do is create a very, very small partition for windows for when I need it (burning MP3s to CDA and my printer only).I wouldn't mind re-installing windows and starting from scratch (I have all my software backed up) and then installing Ubuntu a backed up version of Ubuntu. Except I can't get Clonezilla to install for the life of me after several attempts.So is their any (hopefully easy) way to clean up windows without going to extremes?
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Apr 2, 2010
I noticed its my hardive that has problems and wont boot any of my operating systems not letting me get to my desktop. Is there a way i can clean it or a disk to do it but without doing it at your desktop?
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Apr 12, 2010
Ever since I first discovered alacarte (gnome menu editor) I have been creating lots of menus and submenus for gnome menu so I can always find what I want. To avoid having to redo them, whenever I try another gnome based distro or do a fresh install I always copy ~/.local/share/desktop-directories and applications (and a couple of other files, I forget right now) so I can use the same menus in those.
Well, I don't use these custom menus so much lately so have gone for a much simpler solution of creating a "Favourites" submenu and just adding apps I use a lot. It was while rummaging around .local today I noticed there are hundreds of left over files from long since deleted custom menus (like 18 months+) that I have been copying from one distro to another all this time. Why on earth doesn't alacarte delete all these deleted menus and applications files?
I just did a little experiment: I deleted everything out of these folders so I was basically left with the stock gnome menu with no customizations. I then added a new submenu and then added 3 random apps to to it. I then went and deleted two of those apps and when I went to check, sure enough ~/.local/share/applications contained the 3 files instead of one.
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Apr 26, 2010
I uninstalled Chromium including config files through synaptic, but then after doing a file search, I found lots of Chromium and Chrome files laying around. So then I used that search list to delete them, but I believe there are still Chromium/Chrome files somewhere on my Ubuntu 9.10.To regress a bit and for a little background on this problem, I wanted to uninstall Chromium because I want to see if I can correct this problem that I have with the browsing history file. I want the browse history feature to work and it doesn't - the archive has all of the activity from only one day in history, 8 Apr 2010, and when I try to delete that day of history, it says that is has been deleted, but it is still there, and it won't record any of my browse history.
So I thought if I could do a clean install from scratch, maybe I could get the history feature back.Anybody know where I can find the file containing the history files and/or tell me how to clean reinstall of Chromium?
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