Software :: Large RamDisk DVD Install?
Jun 20, 2010
I am trying to boot a ramdisk and am getting the following error:16384 ram0 (driver?)
16384 ram181 (driver?) No filesystem could mount root, tried:ext2 iso9660. Kernel panic - not syncing:VFS:Unable to mount root fs on unknown-block (1,0)
This is RHEL5 so input the ramdisk_blocksize into isolinux.cfg:
DEFAULT linux
LABEL linux
KERNEL vmlinuz
APPEND initrd=initrd.img root=/dev/ram0 ramdisk_blocksize=1024 ramdisk=2969600 rw init=/etc/rc.d/rc.sysinit
[Code]...
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Nov 18, 2009
So after deciding to upgrade the existing fedora install on my laptop from 11 to 12, I decided to use the preupgrade method. After grappling with the boot space issue by clearing out an old kernel that was deemed safe to remove by the python script on the preconfig wiki page and then using tune2fs, I left the computer to do it's thing, periodically checking back on it. I come back to my computer, and after an apparent restart I see this message spat out at me:
Code:
ramdisk: incomplete write (3537 ! 5123)
write error
kernel panic - not syncing : VFS : unable to mount root fs on unknown block (0,0)
I need this laptop up and running for tomorrow and I would appreciate any help given. I have a Fedora 11 live CD running on the laptop and there seems to be an extra 210 filesystem present with the folders efi, grub, lost+found in there, as well as some config files, elf-memtest86+-400, what seems to be .img file amongst other things. If necessary, I can provide a screenshot.
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Dec 4, 2009
I have updated using zypper from 11.1 to 11.2. Does this process update the boot/menu.lst file with an entry for the new kernel? Didn't for me.
Any rate, that's not really the problem. I have created a new entry in menu.lst to load the new kernel but I don't have a ramdisk image - all I have is a broken link initrd -> initrd-2.6.31.5-0.1-default
Where do I get the image from?
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Sep 23, 2010
I use Brasero/K3b but both of them showed that the ISO is too large (4.7GB) - while the DVD capacity of the disk I'm using is 4.3 or so GB (Princo). Then I figured I'd try to extract the files and burn them like that (extracted iso being 4.2 GB). So then I encountered another issue, usually one would find boot.catalog, which wasn't the case here. Any ideas on how I should burn my DVD ISO ?
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Feb 18, 2011
how big and widespaced the fonts on Clementine playlist are and how good they look on the appmenu (where my mouse pointer is). This is not because Clementine is QT4, I've got the same problem with Chrome, Opera etc. I've been messing with system-settings (KDE settings tool) a day before the fonts become that widespaced in order to make my KDE apps look more native on my GNOME, but I haven't touched the fonts settings there.
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May 21, 2011
Looking for script that I can use to install a large set of packages in Ubuntu. Typically, when I'm starting a new server I have to do "apt-get install" on a bunch of packages. I'd like a script that I can add/remove packages from and say yes to all the dependency questions.
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Apr 2, 2010
I need to use the drive which currently hosts an Ubuntu 9.10 server install. The Os install was the default Ubuntu partitioning. It created sda1, sda2 and sda5, Linux, Extended and Linux/Swap partitions, respectively. The start and end blocks for sda2 & 5 are the same. I am trying to figure out which method of migration would be the best. I have used ddrescue to clone hard drives and am not sure how this would work when migrating to a smaller HD (Moving from a 74GB to a 36GB). Would it be a good idea to shrink the partition with Gparted or something? The OS is only about 3-4GB.
The other way I could migrate is to use the tar backup I made. It should have everything needed as I used the notes from the Ubuntu Backup How To page. I just don't know how this works when installing to a new hard drive. Would I need to create or edit the MBR of the new hard drive? Can a tar backup capture any of the MBR info?I guess it shouldn't make much of a difference as to which method I use so I am open to suggestions as to which to try and any suggestions as to things to make sure to do.
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Jan 28, 2010
When I installed opensuse 11.2 64-bit (KDE) the installer set the root partition to 20GB by default. That seemed unnecessarily large, so I reduced it to 16GB. I then completed the install (basically a default KDE install minus games & educational stuff) and still had more than 8GB free. I'm aware that these days hard drive storage space is quite cheap, but it's not so cheap for me as I have an SSD. Would it not be reasonable to reduce the default root partition size to 12GB, or perhaps vary it according to the software package load selected?
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Apr 8, 2011
Running Opensuse 11.4 (but had same problem on 11.3). During startup and shutdown, the text messages are displayed using a very large font (characters are > 1 cm high). How can I specify the font and font size it uses ? Presumably it is doing a bad job of detecting the monitor (its a Samsung SyncMaster P2250). Which config file contains a suitable entry, and what is the entry ?
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Dec 28, 2009
I am using OS 11.0 Every time I boot my laptop (dell inspiron 9300 - ati video M300). I get the desktop display as 1920 X 1200. This is too large for my default. I use KRandRTray to resize back to 1024 X 768. How can I set 1024 X 768 as the default but still have the option to go to 1920 X 1200?
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May 12, 2011
I want to install Linux Mint 11 (just came out) to a USB drive. My USB drive is 34 gb. So I want to put a 1-2 gb partition on it and install mint just to that. Is that possible? I am a noob so I want to use [URL] but the screenshots don't show an option for a partition or state any extra steps that might be involved in doing this (there's a tutorial for doing this for one of the Ubuntus using fdisk, but I don't have any linux installs right now).
I've seen several tools for partitioning.
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Dec 9, 2009
how could i mount the whole system into the ramdisk?I follow the article "http://www.linuxquestions.org/questions/red-hat-31/building-a-diskless-redhat-enterprise-linux-cluster-765393/",and it works.when i use the "df -h" on the diskless client .I find many system driectory is mountted from image_server.when i stop the connection between img_server and diskless client,the diskless client stop working. my question is how can i mount the whole system into ramdisk.
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Dec 15, 2010
I'm using some milters on a Sendmail box that recommends using a RAMdisk [tmpfs] to store temporary files, the performance benefits of which are quite noticeable. However, the problem is if a huge number of messages are all delivered at once this partition can be pushed off the physical memory and into swap. When this happens the performance tanks to about 1/20th to 1/30th of normal.Is there anything I can do to keep a tempfs from being swapped to disk?
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May 18, 2010
Does anyone know is there any size limitation when doing RAMDISK under SUSE Linux?
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Aug 4, 2011
Have such a question: how to set ramdisk size? Ramdisk: How do you install and set up Ramdisk under Linux (CentOS, RHEL, Fedora)? | Technology: Learn and Share
Here is some article, but somehow GRUB setting takes no effect, size is still limited to 100MB. I need to get ramdisk with size about 700-1500 MB.
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Feb 17, 2010
Wine is one of the coolest things I've ever seen, but unfortunately it's still not enough to suit my needs as version 1.38 can't install any of the .NET libraries.
I'm trying to boot windows 7 on virtual box, but it seems to demand quite a bit of memory. The "recommended" amount is 512MB, and upon checking my kernel only has 488MB total ram with not much room to spare:
Code:
billy@billy-desktop:~$ free -m
total used free shared buffers cached
Mem: 488 462 25 0 53 193
-/+ buffers/cache: 216 271
Swap: 1939 17 1921
I've tried giving the virtual machine memory sizes in the area of 192-256MB, but that's way too much and the system locks up and aborts from it. Memory sizes in the area of 128MB is just too small and it throws an error that there just isn't enough ram to boot. So the only thing I can do to make this work is to increase the size of the ramdisk for my host OS so I can give more to the virtual machine (not to mention things like flash animations are horribly slow and I'd like to see them get more fluid).
I see that I have 16 ramdisks available to me:
Code:
billy@billy-desktop:~$ ls -l /dev/ram*
brw-rw---- 1 root disk 1, 0 2010-02-17 09:54 /dev/ram0
brw-rw---- 1 root disk 1, 1 2010-02-17 09:54 /dev/ram1
brw-rw---- 1 root disk 1, 10 2010-02-17 09:54 /dev/ram10
[Code]....
I looked at some guides here and there, but apparently my setup isn't quite the same. I don't have a menu.lst file in boot/grub, and I don't have a grub.conf file anywhere. So I don't know what file I'm supposed to edit for this.
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Feb 1, 2011
Trying to mount a ramdisk on demand when I need one, however gksudo is griping that the command is wrong. So, what's wrong with this command?
gksudo mount -t tmpfs -o size=1024m tmpfs /mnt/ramdisk
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Sep 30, 2010
I am trying to config the RAM disk on CentOS 5.5
/etc/grub.conf
title CentOS (2.6.18-194.el5)
root (hd0,0)
[code].....
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Feb 24, 2009
I need to get LILO to boot a ramdisk in which the root file system is on /dev/ramdisk. I have tried many iterations of lilo.conf files. The following is one that I would think would work because it worked under 2.4 kernels:
default=linux
boot=/dev/hda
install=/mnt/flash/boot/boot.b
[code]...
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Apr 23, 2010
I created a ram disk with this command: sudo mount -t tmpfs -o size=2048M,nr_inodes=500k,mode=777 tmpfs /var/cache/apt-build/build When I run apt-build, I got an error message that the disk is full (unable to copy file or something). But no disk was full when I checked with 'df'.
we know the maximum of files created from the nr_inodes number? Or is there any other option that determines the max number of files created?
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Mar 12, 2010
I am using fc11(32-bit) and i want to boot the system using initial ramdisk by setting the root to /dev/ram in the /etc/grub.conf.c
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Sep 8, 2010
How do I set up a 256mb ramdisk on opensuse 11.3 x86_64 ? - The /boot/grub/menu.lst content reads as:
# Modified by YaST2. Last modification on Mon Aug 30 11:33:28 EST 2010
# THIS FILE WILL BE PARTIALLY OVERWRITTEN by perl-Bootloader
# Configure custom boot parameters for updated kernels in /etc/sysconfig/bootloader
default 0
timeout 8
gfxmenu (hd0,1)/boot/message
[Code]....
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Mar 30, 2011
I updated my netbook to the last incarnation of slackware-current yesterday.
My problem is now, that it is no more able to start the ash shell of the initial ramdisk i am using. The ramdisk was created with the latest version of the mkinitrd script.
The error message is:
Code:
And the error happens when the ash from the initial ramdisk is intended to be started. Simply copying the /lib/libc.so.6 stuff (symlink to the real so and the real so) enables to ash to be started but later cryptsetup fails to load.
The initial ramdisk from mid-January i used before did not have such a problem. What i also see is, that the failing ramdisk has a size of only 16k blocks. The one from mid-January was bigger.
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Apr 22, 2011
I just performed my very first linux install. I used the Debian 6.0.1a iso. I made it all the way through the installation with no problems whatsoever. I was able to select the version from the grub screen, still everything seemed to be going fine...then it froze. I attached an image of the screen where the system froze:
Its basically the loading screen, times 4! At the top left in case its too hard to read, it says: Loading Linux 2.6.32-5-686, then...Loading initial ramdisk... This sounds all fine and dandy to me but it freezes here. I've tried searching the forums and google for an answer and have come up empty...I'm sure someone has had this problem but it seems to be a tough thing to search for. Would appreciate all the help I can get! Oh and btw, here are the system specs:
circa 2001ish Dell Dimension 4300
P4 1.4ghz
256 ram
onboard video etc...
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Apr 30, 2011
Howto create squeeze self compiled kernel with initial ramdisk?I need some more details, I never done before.
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Jun 1, 2011
On Debian Etch I used to understand how to change boot kernel parameters with Grub. You could just edit menu.lst.
With the newer Grub in Squeeze I am without a clue! I want to set up a ramdisk, say 128 Megs in size, and add that to my boot parameters so that it is created every time the machine starts. Do I set something in /etc/default/grub ?
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Mar 8, 2011
After some hours of googling, I've managed to increase the size of the default ramdisks (/dev/ram0-16) to 1 GiB each, I raided them together with mdadm to try it out, then created a filesyste, mounted it etc etc. No problems. The problem comes when I used gparted to move my windows partition over and in the unallocated space (1 GiB), I created an unformatted partition (/dev/sda2)Now when I try to create the raid array I get the following:
Code:
:~$ sudo mdadm --create /dev/md0 -l 1 -n 2 /dev/ram0 /dev/sda2
mdadm: Cannot open /dev/sda2: Device or resource busy
[code]....
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Jul 7, 2011
I am trying to write to a Ramdisk because I suffer from terrible IO speeds on my VPS. It uses openVZ and I run a Centos 5 distro.
So i created my ramdisk with '/bin/mount -t tmpfs -o size=1G,nr_inodes=10k,mode=0775,noatime,nodiratime tmpfs /tmp'
but whenever I try and copy files to it, it just spams me with 'no space left on device even though there is!
Here is the output of df:
/dev/simfs 157286400 6511452 150774948 5% /
none 16441412 4 16441408 1% /dev
tmpfs 5242880 1296 5241584 1% /disk/test
tmpfs 5242880 1296 5241584 1% /disk/test
[Code]....
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Feb 18, 2010
I am trying to use the Linux Ramdisk y machine and followed the instructions oninux/Ramdisk/ramdisk.html to create a 4GB ramdisk (total memory is 8GB, linux 2.6.9)The issue is that it is taking me almost exactly the same time to read a 1GB file from ramdisk as it is from disk. I was expecting it to be atleast twice as fast.Has anyone encountered this before?
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Mar 14, 2011
Once I've booted my Etch install disc, are there some parameters in configuration files I can edit in the ramdisk filesystem that will allow me to install Squeeze instead? Or, even, paramters I can edit to point at the archive.debian.org repository to install Etch?
Why:
I've got a Sun Ultra10 with IDE drives (hard disk and cd drive) on which I previously had Etch installed. I recently tried to upgrade it to Squeeze, botched the upgrade, and formatted the drive. I'm now trying to install Squeeze from scratch.
When I use the Squeeze disc (debian-6.0.0-sparc-xfce+lxde-CD-1.iso), it cannot detect my IDE drives. I also have the disc I originally used to install Etch, way back when. It will boot and detect the drives, but cannot install because Etch is no longer in the repositories.
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