General :: How To Remount The Grub
Nov 14, 2010
I used the Ubuntu 8.04 disc and went to the terminal, got the grub prompt and followed the couple of lines to setup Grub on (hd0,0), which I confirmed through Fdisk was the location of the boot. I also used my gParted CD to check the partitions and on gParted it is marked as hda,a. The flag shows it is an active boot, as does the * on the Ubuntu terminal show. I am getting the "..exist...no" message. I have xp32 on hd0,1, 64 on hd0,2 and ubuntu on hdo,6.
The machine was working properly and then it was stored for a year. It works fine with the live cd and I have the GRUB shell, which lands me at the GRUB prompt. I am assuming that the kernel is not mounted ? (whatever that entails, as GRUB one message said I had to install kernel before.....
Anyway, I remember that installing the three systems was quite grueling, as I first installed 32, then changed the boot ini file, and then installed 64 and changed the boot ini file there, and then installed ubuntu - with great trepidation- as it seems to want to partition my discs, which I pre-partitiond with gParted. I guess I could copy the GRUB text and the Windows text from another machine that has the same basic install, and redo it.
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Feb 7, 2011
I have downloaded voyage linux 6.5 based on lenny. One of the last things it says is mounting filesystem as read only. then asks me to do login. how to stop this action and eave the file system as Read/Write.
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Dec 21, 2010
My linux distro is CentOS 5.3. Today I edited /etc/sysconfig/readonly-root and set "READONLY" to yes, now my /etc/sysconfig/readonly-root file is like this:
# Set to 'yes' to mount the system filesystems read-only.
READONLY=yes
# Set to 'yes' to mount various temporary state as either tmpfs
[code]...
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Aug 13, 2011
After an error on my root fs it had been remountet readonly. sudo mount -n -o remount, rw /
Can't open /var/lib/sudo/martin/0: Read-only file system mount: you must specify the filesystem type
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Feb 10, 2010
I currently have this filesystem for my live squid server. Can I remount it to add noatime while the cache is being used?
[root@ ~]# cat /proc/mounts
rootfs / rootfs rw 0 0
/dev/root / ext3 rw,data=ordered 0 0
/dev /dev tmpfs rw 0 0
/proc /proc proc rw 0 0
/sys /sys sysfs rw 0 0
/proc/bus/usb /proc/bus/usb usbfs rw 0 0
devpts /dev/pts devpts rw 0 0
/dev/sda3 /var ext3 rw,data=ordered 0 0
/dev/sda1 /boot ext3 rw,data=ordered 0 0
tmpfs /dev/shm tmpfs rw 0 0
none /proc/sys/fs/binfmt_misc binfmt_misc rw 0 0
sunrpc /var/lib/nfs/rpc_pipefs rpc_pipefs rw 0 0
/etc/auto.misc /misc autofs rw,fd=7,pgrp=2586,timeout=300,minproto=5,maxproto=5,indirect 0 0
-hosts /net autofs rw,fd=13,pgrp=2586,timeout=300,minproto=5,maxproto=5,indirect 0 0
nodev /dev/oprofile oprofilefs rw 0 0
/dev/sda2 /var/spool/squid reiserfs rw 0 0
Remount:
mount -o noatime,remount,rw /dev/sda2
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Sep 10, 2009
2 days ago I had installed Fedora 9 on an old machine. The installation was from a Flash USB, and was OK and the kernel on thar installation was 2.6.25-14.fc9.i686.
After the installation I updated the system, and all looks to be ok, and the system was set with the kernel 2.6.27.25-78.2.56.fc9.i686.
But when I start the system with the latest kernel itś get blockd on "remounting root filesystem in read-write mode" step, but not with the original kernel witch start correctly.
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May 21, 2011
After update to 11.4, I would like to regain access to my encrypted home that I left intact. Both user.img and user.key files are there, but when I create the same user again in YaST, it does not recognize their presence and it asks again for size of the image. I am afraid it will just overwrite the old image. I do have full backup of hte data, but since its 150GB, I would rather not have to transfer it again.
How can I remount my old encrypted home?
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May 8, 2010
After using "safely remove drive" on a usb drive automatically mounted (in lucid lynx) i no longer have the ability to remount that drive without cycling its power.I don't know if it has anything to do with removing the "unmount" option from nautilus in favor of cleaning up menu.Anyway I didnt see any forum posts on the issue ---ps. anyone have trouble using a proprietary gfx driver (nvidia for me), a custom console resolution (specified by grub), and the splash screen - when trying to access the ctrl-alt-function tty's?seems the resolution is all screwed up or something and i cant see the login prompt. disabling splash via grub fixed it fine (EDIT - did not fix it)
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Aug 16, 2010
I'm trying to install WoW on my Ubuntu machine and I'm having trouble right off the hop. I'm using an install DVD thru wine and it says since the Installer.exe is hidden I need to remount my drive with the unhide option on.
I'm following this guide [URL]
This is the part of the guide I'm getting stuck at
Note that on some WoW DVD's the installer executable is hidden and you need to re-mount the disc with the 'unhide' option. To do this type in a terminal:
sudo umount /dev/cdrom
sudo mount -t iso9660 -o ro,unhide /dev/cdrom /media/cdrom0/
The unmount part works just fine but when I go to remount the drive it gives me this error:
mount: mount point /media/cdrom0/ does not exist
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May 17, 2011
I have thumb drive connected to a busybox box.I mounted it /opt in initialzation file. However after a while it will unmount itself because it changes its drive letter from sda1 to sdb1. How could a usb device change its drive letter by itself? How could I prevent it happening?
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May 11, 2010
I'm using Ubuntu 10.04 64bit (Kernel 2.6.32-22-generic) and sometimes my /home partition is remounting in read-only and i have no idea why. Normally I only use programms like Firefox, Rhythmbox, Evolution and Netbeans 6.8. Should I switch to the EXT3 filesystem?
dmesg shows me the following information:
Code:
[ 8758.010352] ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
[ 8758.010356] ata7.00: failed command: FLUSH CACHE
[ 8758.010360] ata7.00: cmd e7/00:00:00:00:00/00:00:00:00:00/a0 tag 0
[ 8758.010361] res 40/00:00:00:4f:c2/00:00:00:00:00/00 Emask 0x4 (timeout)
[ 8758.010363] ata7.00: status: { DRDY }
[ 8758.010366] ata7: hard resetting link .....
Code:
badblocks -v /dev/sdb
Checking blocks 0 to 78150743
Checking for bad blocks (read-only test): done
Pass completed, 0 bad blocks found.
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Dec 28, 2010
I'm running Maverick on an older Stinkpad. I have a btrfs /home as a second partition on the internal HDDand a brand shiny new 3TB external USB western digital drive also formatted btrfs. I'm having a problem whenever I hibernate/suspend the laptop by closing the lid and start it back up later, the external drive won't remount unless I do a complete reboot. I have no entry in /etc/fstab for the external drive.Quote:Unable to mount "blah" DBus error org.gtk.Private.RemoteVolumeMonitor.Failed: An operation is already pending
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Mar 7, 2010
I tried to compile a 2.6.33 kernel following Alien's guide.
I pretty much used the default values for every (NEW) option avaiable. I used "make localmodconfig" on my current config (zcat /proc/config.gz) and then tried to use "make menuconfig" to check if I could change anything. I didn't understand most of the options, so I skipped it. Then I used "make bzImage modules" and "make modules_install", copied the files mentioned on the wiki and run lilo.
But when I try to boot using my custom kernel, it gives an error like "Cannot remount read-only filesystem as read-write! This can cause serious problems."
If I try to continue the boot, it hangs when trying to launch the syslog script...
The new kernel entry on lilo.conf is:
Code:
image = /boot/vmlinuz-custom-2.6.33
root = /dev/sda4
label = newkernel
read-only
just like the default kernel entry.
By the way, one thing I changed is the kernel compression format, which I set LZMA. But it didn't seem to be the problem, since it at least started...
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Jul 27, 2011
For starters, I apologize if this turns out to be a double post. My windows laptop hiccupped in the middle...
So I had a Linux box with two drives running happily for years. Both drives were in the same logical volume, and the second had a file system on it.
The the boot drive croaked. I replaced it and reinstalled CENTOS (making sure, of course, to be careful to use the new drive). The I put the second drive back into the volume group (and that's it).
I'm assuming I probably need to create a new logical volume, because that's how it was before, but I really really don't want to format it.
Am I missing a step or am I screwed?
Fsck -l showed the following output both before and after I put the drive in the volume group. code...
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Aug 16, 2011
while since I've been here. I'm having an issue with a fresh install of 11.04. Due to work requirements, I encrypted my home folder, which is fine, however, it seems to randomly lock itself down while I'm working, and it's getting really annoying.
Apps stop working, I can't open nautilus (something about not being able to create certain folders because home is locked), hell, even the terminal link on my desktop says failed to launch application (though the launcher on the top panel works). I just have to run ecryptfs-mount-private and enter my password to fix it, but it's doing this every 15 minutes or so. what might cause it to relock itself so frequently? I would expect to not have to deal with mounting my private data, that should happen at login and be good until log out.
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Aug 4, 2011
I recently built a computer for a friend that is only going to be used to run a network share.
The problem I am running into is that whenever the computer restarts the share, while visible, cannot be accessed by the two Windows 7 laptops in the house.
If I run 'sudo umount /media/storage' followed by 'sudo mount /dev/sda1 /media/storage' the once visible but inaccessible share is now accessible.
I do not understand why this would be. I have added the line 'usershare owner only = false' to my smb.conf file.
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Nov 20, 2010
my Setup is Fedora 14 x64 + radeon hd 4830 i've downloaded .run package from ati site with latest driver for x64 systems. installed it, but didn't edited grub.conf becouse i didn't understood anything there (probably didn't spent enough time to get things understand) Now i've lost possibility to enter my Fedora system. during boot it lost it's modern blue boot screen (with filling drop), it was replaced by standard old boot screen with triple-color stripe. after this boot screen monitor start blinking going on and off. and on last step i'm getting "Fedora 14 boot bla bla bla something" on screen. nothing works except Ctrl+Alt+Delete. system reboots showing successful daemons shutting sequence. How can i edit grub menu from initial grub screen is it possible to it's own 'e' option or 'c' from grub command line?
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Jul 19, 2010
I am going to add following line to the /etc/fstab file /dev/sda4 /MyApp ext3 noatime, errors=remount-ro 0 5 Does it also create directory "MyApp"? Or which kernel file is responsible for creating the directories? Also on linux, which kernel file is able to create some soft links and additional directories?
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Jun 9, 2010
my system I want user1 and only user1 to be able to mount and unmount a specific partition, this partition contains backups and is usually mounted read only, needs to be temporarily mounted read/write by user1 while doing the backup.user1 is an unprivileged user. I've read that the user option will let any user mount the file-system (and only that user can then subsequently unmount it) and that the users option allows any user to mount or unmount the file-system.I also found this in mount's man pageQuote:The owner option is similar to the user option, with the restriction that the user must be the owner of the special file. This may be useful e.g. for /dev/fd if a login script makes the console user owner of this device. The group option is similar, with the restriction that the user must be member of the group of the special file.So it looks like I'd need a login script for that user to make the user owner of the device file (/dev/voiceserv/backup in this case)
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Jul 20, 2011
I just formatted the partition that contains fedora 15 using windows.. Now when I attempt to boot my PC the grub bootloader comes up and I cannot boot anything.... The error that I get|| i feel i need a boot command to boot boot win7 from grub... grub propmts me " minimal bash-like line editing is supported. for the first word tab possible list a possible commands completion anywhere else tab list
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Jul 8, 2011
I am new to Linux. I have installed RHEL 5.4 on my PC with preloaded Windows XP.
Windows was set as the first boot kernel. So if i do not choose which OS to be loaded it will load Windows by Default.
Today I got an error saying GRub Loading Stage2 read error.
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Jan 6, 2010
I would like to know if there is any differences on how to install and to configure GRUB 2 in the different architectures (BIOS/IBM PC-Compatibles, EFI/MacIntel and Corebbot)? Does the Ubuntu installer automatically recognize the different architectures and install the appropriate GRUB 2 package ('grub-pc', 'grub-efi' or 'grub-coreboot' according to the arch)? Or does it just install 'grub-pc'? Is the location of GRUB 2's configuration files different depending on the arch of the computer? Or are they all located in '/boot/grub/', '/etc/grub/default' and '/etc/grub.d/', no matter the arch of the computer? Are the files' structure and options to configure GRUB 2 ('/etc/grub/default' and the scripts in '/etc/grub.d/') different depending on the arch of the computer?
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Jul 3, 2010
I just recently installed a kernel, everything works fine after reboot except. When I use nano -w /boot/grub/grub.conf I get /boot/grub/grub.conf: No such file or directoryIs there something i have to do after installing a new kernel in Gentoo Linux.I can't access my /boot all that appears there is a symlink to /boot How can i see my kernels located in /boot.
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May 16, 2011
we have an oracle application server on red hat 4.6 upon booting it comes up with error: attempting boot from hard drive (c GRUB)
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May 16, 2011
When i turn on my laptop the dell logo comes up, and then it goes to the Windows black "grub" (i have ubuntu and 7), if i click on "Windows 7" it starts, but if i click on "Ubuntu 11.04" it goes to the nice and purple grub that we all know, and i also have two options: Ubuntu or windows. It seems stupid and pointless to have 2 grubs.Is there any way to uninstall Window's black grub so the computer will go direct to Ubuntu's purple grub?
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Jan 3, 2010
I'm just slightly confused here, but... what the? Why does installing grub-doc remove BOTH grub-pc, and grub-common? So basically it seems like by installing grub-doc, I have uninstalled grub totally (yes, it is still there as the bootloader, but i have no way of updating it now!) from my system. What's the conflict between grub-doc and grub-pc, such that grub-pc has to be removed?
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Feb 28, 2011
I have an old BIOS (only 149 GB detected in 160 GB drive). I have installed very few OS as a result - Windows in first 80 GB , 2 distros (20 GB each) in next 40 MB which is within the 149 GB. On issue of "update-grub" grub seems to detect all OS and generates grub.cfg. But on boot , one distro does not appear in the menu.
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Apr 7, 2010
after doing an upgrade to 10.4 and updating grub I get this message. how do I address this
[Code]...
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Jul 14, 2010
I am installing Debian Squeeze, right now. Do I really need to install grub (or any boot loader) since I am only installing one OS.Seems like I shouldn't have to. BIOS takes care of that if there is one OS.
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Nov 9, 2010
I have a duel boot Ubuntu/Mac system (sort of) running on my Mac. I'm able to access Ubuntu OK but if I try and run OSX it will take about five mins. to boot up or it wont do it at all. Then to get grub to work again I need to reinstall refit E.G cd /efi/refit ./enable.sh Then I can bet Grub running and into Ubuntu. One funny though is that is instead of waiting the 10 sec. I push enter it will not work.
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