Questions tagged [uuid]

A universally unique identifier (UUID)

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mdadm is missing UUID, not correct Magic and one RAID arrey is devinded into two after reboot

I have been struggling a lot now and do not understand how to fix this mdadm RAID10 issue that happened after a Software update and reboot. I have some very important data on the disks that I am ...
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How to change UUID of NTFS partition?

There is a way to modify the UUID of NTFS partition by modifying the superblock. Volume serial number is the eight bytes beginning at offset 0x48 in an ntfs formatted drive/partition so, altering it ...
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Unable to boot, UUID does not exist

I am a new Linux user; I've consulted other forum posts to the best of my ability but I have not been able to figure this issue out on my own. This is a Dell Inspiron 7856, recently installed Ubuntu ...
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Virtual box+Ubuntu:Timed out waiting for device error on boot

I have Ubuntu 21.04 installed on Virtual box running on Windows 10 Home. Everything is fine but after some operations there is an issue when I go to boot. I updated APT package information like enter ...
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error: attempt to read or write outside of disk ‘hd0’

I'm attempting a server install of Ubuntu 21.10, and after the install has completed I'm having a problem adding two drives. If I add the drives to fstab by UUID and reboot, I get: error: attempt to ...
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BLKID doesn't show external hdd UUID

On my raspberry Pi, I am using two external HDDs. OS is Ubuntu Server 20.04.2 LTS. The first one is a small WD elements that automount perfectly well (USB connected) The second one is a big WD drive ...
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Mass production for Ubuntu systems

I'm working on a project that is based upon an industrial PC. It runs Ubuntu 20.04 Desktop. Right now I finished the development and I have a PC with a ready-to-use environment: customized Ubuntu ...
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I cant install ubuntu on PC

I can not install ubuntu The os is windows10 before Pic: https://drive.google.com/file/d/1LLLQmaZ9bIe5L_rOqLFhONeUj-COsk-a/view?usp=drivesdk https://drive.google.com/file/d/...
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Lost UUID on RAID devices after reboot

I'm looking for a bit of help trying to figure out why I can not reassemble a RAID after reboot. I have tried: sudo mdadm --assemble --scan My previous /etc/mdadm/mdadm.conf is as follows. The RAID ...
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How to get drive IDs like c0t1d0?

In the documentation to ZFS there are always drive IDs like c0t1d0 mentioned. I only know about UUIDs which are much longer and /dev/sd? How to get the IDs used?
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Problem with grub update

I really start hating grub, because obviously updating grub is kind of a gamble. I did a normal update of grub from Ubuntu, and there was no error message or question or whatever, but after ...
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Ubuntu doesn't work :UUID=xxxx does not exist

My computer has two operating systems, Windows 10 and Ubuntu 18.04. Today, when I tried to get into Ubuntu (I already laid it aside for about one week), the whole screen showed pure purple for at ...
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Is it better to use UUID or PARTUUID to automount HDD with fstab?

I'm trying to setup my external harddrive to mount automatically on startup, following Akshit's terminal guide. I initially used the PARTUUID in `/etc/fastab' instead of the UUID: UUID=191486e0-6049-...
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Help! Startup configuration error. initramfs-tools RESUME=UUUID=(uid swap)

I updated my system (I use Ubuntu 20.04) through the command line; as always and it gave me the error message: $ sudo apt-get upgrade Leyendo lista de paquetes... Hecho Creando árbol de ...
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Stuck in emergency mod, I tried something to get out, it get worse

edit : Sorry if I wasn't clear, I will try my best to be understable I'm STUCK in emergency mod and I did something stupid to solve my issue I edit the wrong UUID via edit/etc/fstab : I erased the ...
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Error 13: Invalid or unsupported executable format

I installed Ubuntu alongside Windows 10. The Ubuntu setup instructed me to restart the system. After I restarted it automatically boots into Windows. I used easyBCD to add the entry of Ubuntu in boot-...
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Ubuntu 18.04 crash

I have problem with Ubuntu 18.04 which is currently I am stuck at this screen. Does that mean I should reinstall Ubuntu or there is something I can do to fix the problem? If not how can I get out of ...
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External USB drive keeps unmounting and remounting using different UUID

I got a 10TB external drive that I use for backups. I normally mount it using fstab and identifying it by its UUID. However, recently it started unmounting spontaneously - and then remounting using ...
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How do I get a device's UUID?

When returning from sleep mode the LCD of my laptop shows only snowflakes (like analog tv with no signal). Unless I restart it nothing changes, no display output. I found this question where the ...
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Kernel downgrade, UUID not found initramfs

I have a freshly installed 18.04 box. Updates were installed and rebooted. It's running kernel 4.15.0-74 without an issue: root@restore:~# uname -a Linux restore 4.15.0-74-generic #84-Ubuntu SMP Thu ...
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Ubuntu 16.04.6 & 19.10, Debian 10: timed out boot; Multi-OSes share swap

I'm experiencing boot errors after a recent install of Multiple OSes. I noticed the long boot times watching the boot loading code go by and getting apparently stuck on a start job that takes 90 ...
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Does rsync requires changing UUID after copying a partition?

I read somewhere that after using rsync to copy a partition from one device to other one, it is important to edit the UUID, since devices cannot coexist with the same UUID. Is it true? How do I do it?...
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SSSD with "ldap_id_mapping = false" will fail to start, clearing /var/lib/sss/db/* and restarting service does not resolve

I’m working through a strange issue with SSSD on Ubuntu 18.04 - Unit is bound to the domain using Realmd, with SSSD as the primary authentication management service. If I change the line: ...
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Unmount by UUID?

I'm building a script and am able to mount by uuid using mount -U UUID, but I can't seem o unmount by uuid. Is this type of operation possible? How would I do it? umount doesn't seem to have this ...
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Unable to mount External HDD missing NTFS and UUID

I need some help! The facts: I was trying to mount a microSD card while my external HDD (Samsung M3 Portable) was plugged and sth went wrong after these mistakes at command line: sudo wipefs --all -...
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NFS - file system UUID and label changed during crash

I was streaming a movie over NFS and it cut out about 1 hr in. The drive was in a 4 x 4 tb box. The drive with the movie (drive 2) on it now won't mount at boot. I took a look at the label and the ...
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Does the uuid from lsblk -f need to match uuid in /etc/fstab

Ouput from lsbk -f NAME FSTYPE LABEL UUID MOUNTPOINT loop0 squashfs /snap/...
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Blank screen after Sleep/Hibernate on ubuntu 18.04

I have the problem that if I sleep or hibernate on my pavillon G7 AMD A6-4400m apu with radeon hd graphics × 2 , the screen will never turn on again, backlight is on but lcd stays black. I tried to ...
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How to change UUID in the /boot/grub/grub.cfg

I am asking how to change uuid in /boot/grub/grub.cfg, so that grub can load OS on a specified partition. I have two disks: SSD /dev/sda1 with uuid d7f0cf11-3edf-4859-b65a-3b5bc60ea7b9 HDD /dev/...
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Why is setting the UUID on a checksummed filesystem so slow, and should I be worried?

I cloned a drive, and now I am trying to change the UUID of the cloned drive. There are various answers on AskUbuntu as to how to do this. I was prompted to run a fresh e2fsck first, which I did. ...
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Changing UUID for an LVM2_member

I have cloned my SSD and rebooted with a Live distro to change the corresponding UUID. Unfortunately when I run tune2fs -U {some_UUID} /dev/sda5 I get the error tune2fs: Bad magic number .... /...
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How to change mounted HDD UUID to human-readable?

I have Ubuntu 18.04.2 LTS installed on SSD, and I mounted HDD also for data. But when I did this, the UUID it has consists of random set of numbers and letter like this /mnt/9d79a504-bf86-4a1f-99e4-...
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swap uuid on boot

I am a beginner (please be patient :)) and have a question regarding swap uuid. A couple a days ago I have played with swap space and ever since the boot process slowed down. What I did: swapoff, ...
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update-grub assigns old UUID

I moved my Ubuntu partition following these steps and mostly everything went OK. I had to use some tools to fix some stuff but anyway, Ubuntu and Windows 10 boots fine. The problem is that whenever I ...
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Ubuntu 18.04 not booting, UUID error

Suddenly my laptop stop booting. I have installed Ubuntu 18.04 and now when it's booting I'm getting this error. I searched it and tried all solutions I found but still not booting. Please don't mark ...
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How to get UUID partition form a given file path in Python

How to get the UUID partition of a given file path in Python, in Ubuntu/Linux
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Ubuntu booting stops after grub with initramfs error

My Ubuntu system is not booting and stops at initramfs error as shown in the snapshot below. I have tried to enter exit as suggested by @ramsudharsan in Boot drops to a (initramfs) prompts/busybox, ...
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36 votes
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Swap: From partition to file, now get "no matching swap device is available"

Running Ubuntu 18.04, I changed from a swap partition to a swap file. swapon -s (summary) and free show the swapfile with the new size. /etc/fstab was changed, permission on the swapfile changed and ...
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Is a hdd's uuid constant? [duplicate]

I know you can change the uuid if you choose, but if left alone does it remain the same. Specifically I'm upgrading my motherboard but am unsure if I'll need to alter my fstab with new uuids or if ...
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"Invalid path for Logical Volume" in boot.log

I am getting the following messages in my /var/log/boot.log: lvmetad is not active yet, using direct activation during sysinit "disk/by-uuid/db9c53d1-9f64-4bb7-970c-9fce38b499d4": Invalid path ...
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/dev/disk-by-uuid/* permissions = lrwxrwxrwx... Is this a security risk?

ls -l /dev/disk/by-uuid Output: lrwxrwxrwx 1 root root 10 sep 15 11:34 49e9738d-627e-... -> ../../sdb5 lrwxrwxrwx 1 root root 10 sep 15 11:34 7ad390da-d1a2-... -> ../../sda6 lrwxrwxrwx 1 root ...
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Get UUID of / filesystem from script

How can I get UUID of a volume that contains the / filesystem? The best thing for that I've found to date is blkid -o list. But this output is human readable and hard to parse. Maybe there is a ...
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8 votes
3 answers
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A start job is running for dev-disk-by x2duuid-ad0b043b\x2d404c... .device (7s / 1min 30s)

I have this error... Slow boot, I've read other questions about that,but I don't know how to Edit fstab Note that I'm dual booting 2 Linux OS I tried this commend to Open up the fstab: gksudo gedit ...
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luksOpen command context

When using luksOpen, does one specify the UUID and the PARTUUID. Which goes first? On trying to post the above sentence, AskUbuntu robocop said it does not meet "our quality standards". I cannot be ...
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2k views

Emergency Mode, Can't Log In

I am using Ubuntu 16.04 on VirtualBox, and I have been trying to move my home directory to a different partition today. Now, I can no longer log in. As it starts booting up, it goes through the ...
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how to fix fstab of one Ubuntu from older Ubuntu in multi-boot system

I have an old desktop PC (64bit) and an old laptop (32bit), on each I have 2 Windows and at least 2 Linux distros . At the moment I have Ubuntu 14.04.5 LTS Ubuntu 16.04.2 LTS installed. After ...
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Freezing on startup (systemd problem?)

I have a laptop Dell Precision 3510 and my Kubuntu 17.04 very often gets frozen on startup. What I have seen from the output of the command journalctl -xb is, it gets frozen due to timing out on ...
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Is it a problem to temporarily have the same UUID for two partitions?

While following the instructions in Move your Linux installation to a new Solid State Drive - even a smaller one, I got stuck right after point "9." where I have copied the UUID of sdb6 (filesystem of ...
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Problems with libblkid

This message showed a lot of times: udevadm: /usr/local/lib/libuuid.so.1: no version information available (required by /lib/x86_64-linux-gnu/libblkid.so.1) or this: blkid: /usr/local/lib/libuuid....
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Cloning Ubuntu with gparted. Both partitions are root?

I wanted to make a backup of Ubuntu. I only have ubuntu on the machine. I got a live usb and booted. Then I used gparted to just copy my Ubuntu to another ext4 partition that I have. That's it. Now ...
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