[SOLVED] Can't boot computer (device not found)

On boot (both Normal and Fallback) I get:
Waiting 10 seconds for device /dev/disk/by-uuid/d3c4f22d-65c6-4e06-bcc1-752db552061
ERROR: device '/dev/disk/by-uuid/d3c4f22d-65c6-4e06-bcc1-752db552061' not found
Skipping fsck
And then it drops to a shell, and I need to use "exit" to run, but it requires me to choose a boot partition (I tried exit /dev/sda1 and others but it says invalid number).
I know there are many posts on that, but since I believe this is a specific issue (I updated kernel last night with -Syyu'd), I decided to make my own.
Any ideas? Thank you in advance.
Last edited by ephan (2012-06-01 18:46:28)

edit: I'm way too slow
ephan wrote:
# mkdir /mnt/arch
# mount /dev/sdaX /mnt/arch (your root partition)
# cd /mnt/arch
# mount -t proc proc proc/
# mount -t sysfs sys sys/
# mount -o bind /dev dev/
# mount /dev/sdaX boot/ (your /boot partition) #This step is not needed if you do not have a separate boot partition
# chroot .
# pacman -Syu udev mkinitcpio
# mkinitcpio -p linux
About that, I have some questions...
1. How long can it take?
2. How dangerous is it?
3. Is it really what I need?
4. Can I lose files? Since I can't boot, is there a way to save them?
5. In order to find out what my root partition is, can I use Gparted?
5.1. Can I not use an Arch Live CD and use Ubuntu for example? It's much easier to do it.
6. How do I know if I have a separate boot partition? I have all /dev/sda's, and one of them is boot I think. Don't we all have?
Sorry and thank you!
Also, and I want to make this clear, I did *not* use force on pacman, I never do.
So, what caused?
I just updated it normally, like I always do, was it some arch error everybody else experienced?
1) The time to boot the live cd, type the commands and like 30 seconds for mkinitcpio.
2) lol, not dangerous
3) Since it's in the Q&A: most probably.
4) You can always lose files. Just boot a live cd, mount the partitions you want to save and the partition you want to save it to and copy (or rsync).
5) I don't think so, unless you gave your partitions a descriptive label. Just mount partitions until you find the root.
5.1) I don't think so.
6) If you find your root partition: if /boot is empty, you have a separate boot partition. You can check your fstab to see which one.
What caused? dunno
Was it something everybody experienced: no
Good luck! Just follow the instructions, it's not that hard.
Last edited by Terminator (2012-05-29 21:47:43)

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[Solved] Can't boot, root device not found

I recently performed an update of udev and my kernel and after this I am unable to boot the normal kernel or the fallback. When I try I get this error:
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Typing exit results in me dropping to another shell and if done repeatedly a kernel panic. I attempted to boot via the grub console using the sda device block but I came up with the same error. When I look in /dev through the recovery console that comes up the sda* blocks aren't present.
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Last edited by Surry (2012-03-20 00:06:12)

This has been solved.
For anybody's reference:
From the recovery shell I had to load the modules ahci and sd_mod and that got the sda* to appear in /dev. After that I had to mount /dev/sda3 (my root partition) under /root and /new_root and then enter 'exit' to continue booting.
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What do i do if my computer says boot device not found

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may i have some more information about the product you have? check if there is some external device connected, and check for HDD self test in BIOS. if test passes without any error and there is no external device or disc on ODD. you may need to re-install OS.
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“I am an HP Employee“
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Make it easier for other people to find solutions by marking a Reply 'Accept as Solution' if it solves your problem***

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You're very welcome, Jonathan.
dv5 still isn't enough info for me to provide the service manual (in case there are differerent ones for the different dv5 models).
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http://bizsupport1.austin.hp.com/bc/docs/support/SupportManual/c01550108/c01550108.pdf
Assume it is safe to say all dv5 models come with SATA notebook drives.
So, if you want to spring for $15, you can get this enclosure which apparently has very good reviews.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817182138
From what you are describing (noise and stuff), I would say you don't have much of a chance to recover data but that is up to you if you want to try the enclosure or not.
Here is what I recommend:
Yank the hard drive, and power on the notebook.
If the odd noise you heard is gone, then you can pretty much safely assume the drive was the cause, and that replacing the drive, and reinstalling the operating system will solve the issue.
If the noise is still there, then there could be another issue, and it might be risky throwing good money after bad.
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diazlourdes wrote:
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Hello,
I tried to re-install de OS from windows 7 to windows 8.1 and when the bios update driever was installed and the laptop was restaring it appeared the folowing window and message:
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Whenever you get a message stating that the boot device not found it could be because of bad sectors on the Hard Drive. Its not necessary that the Hard Drive Test should fail to determine if the Hard Drive if its faulty or not. Sometimes even if the Hard Drive Test passes the Hard Drive will still not work because of the bad sectors in it.
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Step 01. Remove the battery and unplug the AC/Power Adapter
Step 02. Press and hold the Power button for more than 30 Seconds
Step 03. Plug in the AC/Power Adapter (leave the Battery out for now)
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http://h10032.www1.hp.com/ctg/Manual/c02876562.pdf
Please check your notebook warranty to verify the status and order a new Hard Disk Drive
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**Click the KUDOS star on left to say Thanks**
Make it easier for other people to find solutions by marking a Reply 'Accept as Solution' if it solves your problem.
Thank You,
K N R K
Although I am an HP employee, I am speaking for myself and not for HP

Boot Device Not Found Error Message

I've had my laptop since May 2011. HP Pavilion dv6
Quad-Core AMD Phenom II 2.2 GHz
DDR3 SDRAM 8 GB
500 GB Serial ATA 7200 rpm hard drive.Originally Windows 7 64-bit upgraded to Windows 10 64-bit One morning I turned on my laptop and I received the following error. The laptop lives on my desk, hasn't undergone any major changes, and I haven't moved or dropped it. I've run every diagnostic test from the F2 menu. The hard drive and memory both passed, the system tune up passed, and I've restored the BIOS to the default settings with no changes. If I hold the power button and restart the laptop usually on the 2nd or 3rd attempt the system will start normally with no issues and continue on as if nothing is wrong. This is a helpful work around but it doesn't solve the problem which is a bit of an annoyance and leaves me worried that eventually it might refuse to start at all. Thinking that a system restore might help I ran a recovery and brought it to an "out of the box" state. After that failed I decided to go ahead and upgrade from Windows 7 to Windows 10. I performed a clean install keeping none of my programs or personal files. Despite a successful Windows 10 install I still receive the same error every time I restart. The short version:When I turn on my laptop I encounter a Boot Device Not Found Error Message.My hard drive passes diagnostic tests.My laptop will start eventually if I continue to power cycle it.

@pkharel ,
Hello and thank you for posting on the HP support forums. So that I can better help you here with this hard drive issue . Can you explain what diagnostic you ran on the hard drive.
Did you run the diagnostics from the BIOS?
HP Notebook PCs - System Diagnostics (F2)
HP PC Hardware Diagnostics
If you have attempted the diagnostics from the BIOS and are not finding the Hard drive. See if you can find the hard drive in another computer. If you can not find it using another computer replace the drive. If you can and it is not located on your notebook then you have a possible issue with the motherboard.
First thing I would do is try and restore your BIOS first.
Restoring the BIOS
After attempting this and you still can not find the Hard drive and you can see it in another system please contact HP phone support for repair options.
Please call our technical support at 800-474-6836. If you live outside the US/Canada Region, please click the link below to get the support number for your region.
http://www8.hp.com/us/en/contact-hp/ww-phone-assist.html
If the hard drive is not detected in another system then replace hard drive.
Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
Also be sure to mark my post as “Accept as Solution" if you feel my post solved your issue, it will help others who face the same challenge find the same solution.
D5GR
I work on behalf of HP

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This question was solved.
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Hi,
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****Click the White thumb to say thanks****
****Please mark Accept As Solution if it solves your problem****
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Microsoft MVP - Windows Experience

Boot device not found. "Hard disk not exist". windows not booting

Product: HP G72-110SA
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two days ago, I was installing updates on my computer and when it was about to restart, it froze. After waiting for 10 minutes, I had to turn it off by pressing the off button. From then on, the computer turns on but shows a message "Boot device not found".
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Thank you for visiting the HP Support Forums and Welcome! This is a great site to get answers and ask questions. I would be happy to assist you. As there are many models of HP Notebooks, I would need the model number. (How Do I Find My Model Number or Product Number?) When I went to www.hp.com/go/techcenter/startup, it gave me documentation and troubleshooting steps to follow. One of the documents it provided is called Hard Disk Error Displays before the Computer Starts. NOTE: I recommend at this point you make an immediate backup of all important data and files. Here are instructions on how to Backing Up Your Files (Windows 8). Please follow the troubleshooting steps provided, re-post with the results of the troubleshooting in detail. Thank you.

My screen says boot device not found. Please install an operating system on hard drive,

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Hi,
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DP-K
****Click the White thumb to say thanks****
****Please mark Accept As Solution if it solves your problem****
****I don't work for HP****
Microsoft MVP - Windows Experience

BOOT DEVICE NOT FOUND - PLEASE INSTALL AN OPERATING SYSTEM ON YOUR HARD DRIVE

HP G6-2212SA LAPTOP ( 2 YEARS OLD) BLACK - WINDOWS 8
I HAVE RUN THE MEMORY TEST PASSED
RUN THE HARD DISK QUICK CHECK - PASSED
RUN HARD DISK EXTENSIVE TEST - PASSED
I HAVE BOUGHT A NEW HARD DRIVE, INSTALLED IT AND RUN ALL THE SAME TESTS WITH ALL THE SAME PASSED RESULTS. I BELIEVE THAT THE PROBLEM IS NOT THE HARD DRIVE, SO I HAVE TAKEN THE NEW ONE OUT AND PUT THE OLD ONE BACK IN, AND HOPEFULLY BE ABLE TO GET A REFUND IF I SEND IT BACK.
I HAVE FOLL0WED INSTRUCTIONS ON THIS FORUM TRIED MOST THINGS STILL GET THE SAME MESSAGE.
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Hi @Darren104
Welcome to the HP Support Community. I saw your post regarding the Boot Device not Found error message. This HP document Resolve Boot Device not Found Error Message will show you how to reset your BIOS. This will force the BIOS the look at the hardware and it might see your new hard drive. Another reason that it might not be seeing the hard drive is because there is no bootable operating system on the hard drive. You might need to look at taking it out and installing an operating system on it via another computer.
Please click “Accept as Solution ” if you feel my post solved your issue.
Click the “Kudos Thumbs Up" on the right to say “Thanks” for helping!
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BHK6
I work on behalf of HP

[SOLVED] Device not found and kernel panic

Hi,
I'm having an issue with the kernel. I get this weird error while booting:
Booting the kernel.
:: running early hook [udev]
:: running hook [udev]
:: Triggering uevents...
ERROR: device '' not found. Skipping fsck.
ERROR: Unable to find root device ''.
You are being dropped to a recovery shell
Type 'exit' to try and continue booting
sh: can't access tty: job control turned off
[rootfs /]# _
I don't have the slightest idea what to type in that shell, so I exit (^D) and get an error with its shell, another one and finally a kernel panic. Do I have to report the other two error as well? I think this might be related to a recent change in my syslinux.cfg. I wanted to add hibernation cabability to my arch, so I added "resume=/dev/sda2" (my swap) to kernel options. It should not yield such a result though. As a matter of fact, I get it even if I remove that parameter at runtime. For now, I managed to boot with Fallback Initramfs.
Here is syslinux.cfg, as well:
# Config file for Syslinux -
# /boot/syslinux/syslinux.cfg
# Comboot modules:
# * menu.c32 - provides a text menu
# * vesamenu.c32 - provides a graphical menu
# * chain.c32 - chainload MBRs, partition boot sectors, Windows bootloaders
# * hdt.c32 - hardware detection tool
# * reboot.c32 - reboots the system
# * poweroff.com - shutdown the system
# To Use: Copy the respective files from /usr/lib/syslinux to /boot/syslinux.
# If /usr and /boot are on the same file system, symlink the files instead
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# If you do not use a menu, a 'boot:' prompt will be shown and the system
# will boot automatically after 5 seconds.
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# The wiki provides further configuration examples
DEFAULT arch
PROMPT 1 # Set to 1 if you always want to display the boot: prompt
TIMEOUT 50
# You can create syslinux keymaps with the keytab-lilo tool
#KBDMAP de.ktl
# Menu Configuration
# Either menu.c32 or vesamenu32.c32 must be copied to /boot/syslinux
UI menu.c32
#UI vesamenu.c32
# Refer to http://syslinux.zytor.com/wiki/index.php/Doc/menu
MENU TITLE Arch Linux
#MENU BACKGROUND splash.png
MENU COLOR border 30;44 #40ffffff #a0000000 std
MENU COLOR title 1;36;44 #9033ccff #a0000000 std
MENU COLOR sel 7;37;40 #e0ffffff #20ffffff all
MENU COLOR unsel 37;44 #50ffffff #a0000000 std
MENU COLOR help 37;40 #c0ffffff #a0000000 std
MENU COLOR timeout_msg 37;40 #80ffffff #00000000 std
MENU COLOR timeout 1;37;40 #c0ffffff #00000000 std
MENU COLOR msg07 37;40 #90ffffff #a0000000 std
MENU COLOR tabmsg 31;40 #30ffffff #00000000 std
# boot sections follow
# TIP: If you want a 1024x768 framebuffer, add "vga=773" to your kernel line.
# (0) Arch Linux
LABEL arch
MENU LABEL Arch Linux
LINUX ../vmlinuz-linux
APPEND root=/dev/disk/by-uuid/dc891acc-9ff7-4d95-bba4-bc2e502301e7 ro
APPEND resume=/dev/sda2
INITRD ../initramfs-linux.img
# (1) Arch Linux Fallback
LABEL archfallback
MENU LABEL Arch Linux Fallback
LINUX ../vmlinuz-linux
APPEND root=/dev/disk/by-uuid/dc891acc-9ff7-4d95-bba4-bc2e502301e7 ro
INITRD ../initramfs-linux-fallback.img
# (2) Windows
#LABEL windows
#COM32 chain.c32
#APPEND hd0 0
LABEL hdt
MENU LABEL HDT (Hardware Detection Tool)
COM32 hdt.c32
LABEL reboot
MENU LABEL Reboot
COM32 reboot.c32
LABEL off
MENU LABEL Power Off
COMBOOT poweroff.com
Any ideas?
Thank you,
rubik
Last edited by rubik (2012-07-22 10:03:59)

Also, don't use "root=/dev/disk/by-uuid/...", that's just wrong. Udev kicks in after the bootloader phase.
https://wiki.archlinux.org/index.php/Sy … nux_Config
Here's mine:
LABEL arch
MENU LABEL Arch Linux
LINUX ../vmlinuz-linux
APPEND root=UUID=978e3e81-8048-4ae1-8a06-aa727458e8ff ro quiet vga=current
INITRD ../initramfs-linux.img
And don't forget to mark it as solved.

3fo. boot device not found

Have hp elitebook 8470p. Yesterday turned it and got error. No boot device found install an operating system E. Thanks

Dear Customer, Welcome and Thank You for posting your query on HP Support Forum It looks like your Notebook is showing "No Boot Device Found" error messageWe will surely assist you with this issue This error message also means that the hard drive is so dead, that the notebook doesn't even know it has one installed. You need to replace the hard drive and reinstall the operating system. If you intend to repair the PC, try removing and reseating the hard drive before buying another one. Maybe the contacts are loose or oxidized The "Hard Disk [3F0] / Boot Device not found" Error message could be because of 3 things as shown below: 1. The Hard Drive or the Partition Structure of the Hard Drive could be corrupted or bad2. We need to check if the Hard Drive Data Cable which connects to the System Board has gone faulty or not. If yes we need to replace the Hard Drive Data Cable3. Bad SATA Controller on the System Board replaces the System Board or Notebook To start with please check if you are able to access BIOS to test the Hard Drive Please Click on the below shown link to perform the Hard Drive Testhttp://h10025.www1.hp.com/ewfrf/wc/document?docname=c00439024&cc=us&dlc=en&lc=en&product=3816360&tmp_track_link=ot_search#N32 If you are unable to access BIOS please remove the Hard Drive and then try to access theBIOS again. Once you remove the Hard Drive boot the Notebook again and press F10 to access the BIOS. If you are able to access BIOS then the Hard Drive is bad Please perform the below shown step if required:Remove the Hard Drive from you Notebook and test it out on a different Notebook. Incase if you are still getting the same error that confirms the fault with Hard Drive Incase if the Hard Drive works normal on a different Notebook please contact HP to get your Notebook diagnosed by an HP Certified Engineer Note: Just to let you know most of the Notebooks have the Hard Drive & SATA Cable built in which cannot be replaced unless we replace the whole Notebook You can Check your warranty Here to verify the status and Click Here to order a new Hard Drive Hope this helps, for any further queries reply to the post and feel free to join us again **Click the White Thumbs Up Button on the right to say Thanks**Make it easier for other people to find solutions by marking a Reply 'Accept as Solution' if it solves your problem. Thank You,K N R KAlthough I am an HP employee, I am speaking for myself and not for HP

[SOLVED] Can't boot computer (device not found)

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