Ubuntu Installation :: Dev/disk/by-uuid/xxxx Does Not Exist?
Jan 23, 2010
Fresh install of 9.10. Update all. The update froze at the very end: configuring grub-pc. I let it run like that all night before settling for a reboot while the update manager was still running. (The update also raised the kernel version.) After reboot, I tried the newer kernel [2.6.31-17-generic] at the grub menu and got this error:
Quote:
udevadm trigger is not permitted while udev is unconfigured.
udevadm settle is not permitted while udev is unconfigured.
svgalib: Cannot open /dev/mem.[code].....
And, cat /proc/modules gives me a long list of modules (too much to retype for now).So my hard drive is there. maybe some errors on the / home partition [sda6] and I can get to the root directory.
Basically, today I installed Ubuntu on my Toshiba NB200 to dual boot with XP. The installation went okay (I think) but after, when I rebooted, and selected Ubuntu from the possible selections, I got this message:Quote:Gave up waiting for root device.Common problems:
-Boot args (cat /proc/cmdline) -check rootdelay= (did the system wait long enough?) -check root= (did the system wait for the right device?)
After installing the RT kernel, and updating my boot loader, I get this message. Code: ALERT! /dev/disk/by-uuid/... does not exist. Dropping to a shell! It doesn't make a difference whether I pass the 'root=/dev/', or 'root=UUID=', options to the kernel. I've also noticed a message while the system was attempting to boot up. Code: host side 80-wire cable detection failed, limiting max speed to UDMA33 This is all strange to me as I was running the Debian 2.6.32-5-686 kernel, without any problems.
Alright, I have downloaded the upgrade for 10.04 and installed upgraded from my previous 8.04. Everything was working all fine until I had to reboot my pc. When I did i got some errors
Mount: Mounting none on /dev
It goes on to tell me that my UUID does not exist. Then it says
ALERT! Alert! /dev/disk/by-uuid/xxxxxxxx-xxxx-xxxx-xx$ does not exist. Dropping to a shell! It then drops to a very simple shell which has no flexibility and is very frustrating.
EDIT: This is the full error message
Mount: Mounting none on /dev boot args cat /proc/cmdline check rootdelay =(did the system wait long enough?) check root =(did the system wait for the right device?) missing modules ( cat /proc/modules)ALERT! /dev/mapper/debian-root does not exist dropping to a shell.
I would get the message that the uuid file does not exist. I've been online looking for fixes since yesterday morning and nothing has helped at all. I've read online that I should run fdisk -l to obtain info to share with others, but that command doesn't work in any command prompt I open. I am running Ubuntu 9.10 with the latest patches and I'm sure you guys know that it runs Grub2 loader...if that helps at all.
I have an SiI hardware SATA RAID card, with two 500GB disks in mirrored RAID configuration. When I first plugged them in and set it up, things seemed to work ok, but on boot the raid controller told me that the RAID needed rebuilding, and it would happen automatically after POST. So I didn't worry about it, and the drive mounted fine, and it's been that way for years. I just went in and manually on-line rebuilt the RAID in the controller's BIOS, and now when I boot into Ubuntu, both disks show up in fdisk, but neither show up in /dev/disk/by-uuid. Am I missing something?
Just tried installing Ubuntu 10.10 from a USB device on my Windows 7 machine but something goes wrong. Far into the installation the computer restarts, asks me which operating system I want to start (it had already done this once before) and I choose Ubuntu. Then I get three alternatives:
Ubuntu, Linux 2.6.35-22-generic Ubuntu, Linux 2.6.35-22-generic (recovery mode) Windows 7 (loader) (on /dev/sdb1)
I pick the top choice, and get the following message: ALERT! /host/ubuntu/disks/root.disk does not exist. Dropping to a shell.
If I start recovery-mode i get the same message. There's some text above the message that reads "new low speed USB device using ohci_hcd and address"... Could there be a problem with the usb-drive? If I remove the USB drive I get the message: Gave up waiting for root device.
From what I can figure out, grub can not figure out which disk has my root file system. I checked the partition labels and they match the UUID that are in my fstab.
Plan to use GRUB for multiple booting to select the OS but only with luck have I got it partially to work. Windows 98 and Puppy 431 O.K on first HDD but Puppy 421 on second HDD /dev/sdb1 stops at error 21.
Is there any C function that will translate UUIDs into device names? I have a little graphical mount tool that can read user-mountable device names from /etc/fstab and lets you cycle through the list and mount or unmount them. But it doesn't work with UUIDs, which are preferred these days. Is there any way around this?
I'm running Kubuntu Karmic on my Dell Inspiron laptop - about 200 bug fixes behind because my only available internet is a cellular connection on a crappy wi-fi router - and last night, I suspended it, but it shut down instead. Not a problem, it does this fairly often, figure the RAM gets jostled or something.
But when I go to boot it up, it gets stuck at the pre-loading screen before getting garbled and dropping to the shell, where it says "mount: mounting /dev/disk/by-uuid/[insert hex code here] failed: invalid argument". Of course, mounting /root/sys, /root/dev and /root/proc fails, (directory does not exist) and it gives me the busybox initramfs prompt.
long story, I upgraded my system from maverick to natty, didn't like it so restored my system with a backup that I had done recently. after it rebooted I used gparted live CD to expand my partition, moving swap to the end of the HD, then when I rebooted grub didn't work so I booted with ubuntu live cd and reinstalled grub. then I booted normally but nautilus didn't work and had lots of problems. So I installed ubuntu again with ubuntu live cd, formating the partition and expanding it, no problems at all.But, I wanted my files back, so restored the system again, now the message that I get isQuote:
Gave up waiting for root device. Common problems: -Boot args (cat /proc/cmdline) -Check rootdelay= (did the system wait for the right device?)
Im a first time user of Ubuntu, I have 11.04 64bit installed. I used to use Fedora before. Seems like all of a sudden APT-GET stopped working. Whatever I try to install, it either tells me dependencies unmet presumably because the libraries are uninstalable (as it it says), and then when I try to install these packages I always get the error "Eackage xxxx has no installation candidate". This is for anything I try. I use Main server in Software Source, but have tried different servers too. May I point out that I haven't touched it, one day it was working the next it was not. Very Windows-like
I've downloaded Ubuntu 8.10 and I have installed it within ms windows. My first problem was when I went to boot Ubuntu and the graphics weren't right so I rebooted it with a different graphic configuration and it installed successfully. When I went to boot Ubuntu a second time to actually use it I got the following error: ALERT! /host/ubuntu/disks/root.disk does not exist. Dropping to a shell! BusyBox v1.10.2 (Ubuntu 1:1.10.2-1ubuntu6) built-in shell (ash)
Currently I'm running 3 operating systems on my machine; Windows XP, Windows 7 and Fedora 14. I've installed them in the following order: XP -> Win7 -> Fedora14, with the idea that this would work fine regarding operating system selection at boot time.
But unfortunately, I just installed Fedora, and now I'm unable to boot Windows 7/XP. When I select the "Other" option in the Grub menu, I get the following error: Code: Error 21: selected disk does not exist To provide as much info as possible, here is a boot info script log:
Currently I'm running 3 operating systems on my machine (in order of installation); Windows XP, Windows 7 and Fedora 14. Unfortunately, after I installed Fedora I'm no longer able to boot Windows 7/XP. When I select the "Other" option in the Grub menu, I get the following error:
Code: Error 21: Selected disk does not exist To provide more info, here is a boot info script result: Code: Boot Info Script 0.55 dated February 15th, 2010
Boot Info Summary: => Windows is installed in the MBR of /dev/sda => Grub 0.97 is installed in the MBR of /dev/sdb and looks on the same drive in partition #3 for /grub/stage2 and /grub/grub.conf. => Windows is installed in the MBR of /dev/sdc .....
mdadm: No arrays found in config file or automatically
After doing the proposed security updates (re)booting stalls with a message like:One or more mounts listed in /etc/fstab cannot be mounted yet /home: waiting for UUID.In the escape shell I can see from /etc/fstab that /home was mounted to /dev/sda6. But when calling blkid this device is missing.Trying to mount /home I get the error:mount: special device UUID=... does not exist.In other threads I have read that the UUID-entry for /home in /etc/fstab has to be corrected. But how do I get the correct UUID? Will making a live-CD, booting from it and then calling blkid give me the UUID for /dev/sda6?
I put my two SATA hard drives in a new computer (new mb, cpu, no pci SATA adapter, built-in nVidia graphics), and I thought everything was going well. The Mythbuntu logo came up, but the bar at the bottom did not move. It eventually dropped me out to a (initramfs) prompt.
When I used the recovery mode, this is where it had problems:
[ 4.756000]ata1:SATA link up 3.0 Gbps (SStatus 123 SControl 300) [ 5.068000]ata2:SATA link down (SSTatus 0 SControl 300) [ 5.552000]ata3:SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ 5.864000]ata4:SATA link down (SSTatus 0 SControl 300)
[Code]....
I had a SATA PCI card in my old computer, would adding that to the new system make it work? Is there someway to update the UUID numbers (I think I have done this before).
I have a Netbook Remix install on an SD card that won't boot. Grub2 in the recovery mode shows it fails finding the root files by using UUID. It's my first Grub2 install and I'm not sure how to go about debugging it. The machine boots the same version from a USB stick.
I just installed the new LTS version but it crashes sometimes an gives the error end_request: i/o error, dev sda, sector XXXX in terminal My PC was working just fine when I was under Karmic. I think it's a bug....
I run Ubuntu 64 bit on my Pentium D820 machine: HD: Maxtor PATA 160Gb MB: MSI 7387 GC: MSI TD256E (RX550)
I am running Wheezy as my main OS in the first drive in my desktop. I use the 2nd drive for data. I am trying to add another OS to multiboot. When I ran grub-update in Wheezy, I am getting device letter for the root device instead of UUID in grub.cfg, in the os-prober section. Like this
I have 2 CPUs Which are Intel and AMD based. I used F9 before and didnt have any issues while I removed the hdd that I'd installed F9 on INTEL based and then put my hdd on my AMD based cpu. Well it booted and ran perfectly no issues came up.And then I've done the upgrade to F10 (clean install on INTEL). I do the same case above.But I got error msgs it said that the UUID cannot be found (I was using label on F9 fstab and worked fine).
I put back my hdd to intel based cpu and then try to edit my fstab and menu.lst (change UUID to LABEL). WOW I thought by changing UUID from fstab and menu.lst would resolve my problem but it doesnt solve anything. My devices (sda1/2/3, /boot, and /home) cannot be reconized.Well do you guys know how to change UUID to LABEL? and what exactly my problem?
Been doing some installations in a newly upgraded machine where I'm setting up two instances of 8.2 in slightly different configurations.Installing from netinst AMD64 DVD with firmware non-free. First installation goes smooth as then the second changes the UUID of the swap partition, meaning that the first then can't find it. To add insult to injury the second installation doesn't install GRUB in the MBR of the HDD.
Nothing different or special about the installation which is standard graphical with manual allocation of previously set up partitions. I don't touch the swap drive in the partitioner - just point to the correct partitions for / and /home as I want them. This is exactly as I've done before, many times.Setup asks me if I want to install GRUB in MBR and I answer "No" (because it would otherwise load in MBR of sda where I want it on sdb) then point to sdb in the next screen. Again really nothing different to what I've done dozens of times.
I just attempted to install to a USB drive, and somehow in the process, GRUB overwrote my Windows 7 bootloader on the internal disk. My work laptop is now booting into a grub recovery whenever my USB key isn't present (with error: no such device and the uuid) - and hangs on a blinking cursor whenever the key is plugged in.I'm not familiar with what my options are for grub rescue, but ls shows (hd0) (hd0,msdos2) (hd0,msdos1) (fd0)
My laptop is encrypted, so I don't have much chance of recovery unless I can get back to the windows bootloader.
I have an FTP server which is linked to a user account in a chroot jail and I have disabled anonymous access (anonymous_enable=NO). I can FTP into this server from Windows command line FTP client and every other FTP client I have used with no problems.
However, I have been trying to access it via a web browser (firefox) using ftp://<server name>. This connects and prompts me for my login details, which I enter as I should. But then I get a 425 connection error.
In my /var/log/secure log, I see the entry: -
Why is Mozilla Firefox trying to connect as an anonymous user when it has already prompted me for my login details?
/host/ubuntu/disks/root.disk not exist. Dropping to shell.i install ubuntu as a dual boot with xp.this msg occur a few times after i select ubuntu to boot up from...i reboot my pc a few time and even did a "update grub" finally get the ubuntu to start...but same problem occur again just now...
