Questions tagged [uuid]

A universally unique identifier (UUID)

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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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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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1answer
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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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265 views

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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2answers
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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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1answer
283 views

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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3answers
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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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1answer
152 views

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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2answers
10k views

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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1answer
109 views

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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1answer
562 views

“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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2answers
527 views

/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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7answers
4k views

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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2answers
14k views

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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2answers
1k 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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3answers
6k views

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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1answer
3k views

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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606 views

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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1answer
280 views

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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1answer
970 views

uuid missing when running ./configure for cryptsetup-1.7.3 install

So, one week into my first ever Linux computer and out of all the rookie issues I'm having, this one is the most pressing. While running the ./configure command for the cryptsetup-1.7.3 file I've ...
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3answers
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Dell XPS 13 9360 Dualboot Windows 10 and Ubuntu 16.04

EDIT: don't do what I did in this question, check out the answer section below! Screen shows up with this after running Ubuntu from grub64efi: gave up waiting for root device. Common problems: ...
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update-grub error : resume=UUID=xxx not found

I'm currently trying to get hibernation working and I therefore change the GRUB_CMDLINE_LINUX_DEFAULT to "resume=UUID=xxx" where xxx is my swap partition UUID. But it shows me the error error : ...
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2answers
5k views

ubuntu 16.04 slow boot cgroup: new mount options do not match the existing superblock,

I followed steps from here Lubuntu 16.04 boot slow (cgroup: new mount options do not match the existing superblock, will be ignored) @atomSmasher answer. But I dont know how to apply the fix. When I ...
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1answer
92 views

Bootup doesn't follow /etc/fstab

Good morning, I have a media server that has a total of 22 drives. OS, OS Backup and then the media drives. This is Ubuntu 15.10. I have utilized the UUID for setting up the /etc/fstab file. When ...
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281 views

What needs to be taken care of after changing the UUID of the EFI system partition?

I need to change the UUID of my EFI partition (background: see below). After changing the UUID -- what do I need to take care of (in order not to mess up the system)? Background: After installing an ...
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310 views

ALERT ! UUID- does not exist. Dropping to a shell [duplicate]

I have got problem in Ubuntu 16.04. My system has 2 drives with RAID 1. I tried all that I found but didn't work. I matched the /etc/fstab and /boot/grub/menu.lst file with both /dev/md126 also ...
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1answer
1k views

How does 16.04 mount my newly-mdadm-created RAID? (It's not in /etc/fstab)

I've created a RAID device using mdadm. It's /dev/md0 and I've successfully formatted and mounted it at /media/raid. I created an /etc/fstab entry for /dev/md0, but md0 is gone when I reboot. Upon ...
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1answer
44 views

I Need To Adjust My UID

In short: If I change my UID what are the complications I can run into? In context: I am trying to share files between two Ubuntu machines using NFS. Currently each machine has it's own username, but ...
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2answers
248 views

How can I redetect swap partition after formating to enable hibernation

I had this setup working on my laptop: /dev/sda1 (ext4) / /dev/sda2 (ext4) /home /dev/sda3 swap partition /dev/sda4 (ntfs) /media/windows After getting sick of windows, I removed the last partition. ...
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1answer
7k views

What is UUID in virtual box?

When I create a Virtual Machine in command line using the following command: VBoxManage createvm -name <VM's Name> -register It returns: Virtual machine <VM's Name> is created and ...
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Files are not shown on mounted partition that is booted from LiveCd

I need help. I have installed Arch after Ubuntu and Elementary OS, and after that my grub was messed up, and I was unable to boot again in Elementary OS. So I decided to backup my files from home ...
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1answer
354 views

Adding second hard drive

I have been trying to set up a secondary hard drive to compliment my smaller SSD drive ... I have been having trouble following the howto posted. Some how I can create the "mount point " mynewdrive" ...
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1answer
540 views

Mdadm array showing as UUID?

I have an ssd with ubuntu and then 4 hdds in a mdadm array. I had to reinstall ubuntu and now am seeing the array but only mounted as the UUID and the array appears as an external drive in ubuntu. ...
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1answer
7k views

What is PARTUUID?

In Ubuntu 14.04 there is only one UUID for each partition. For example my sudo blkid shows /dev/sda1: UUID="b2be9c80-8413-4fdb-a562-6ca072385c02" TYPE="ext4" /dev/sda2: UUID="ccd2f497-5d8f-48c7-...
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3answers
2k views

Unable to mount external NTFS HDDs due to duplicate UUID

I'm trying to setup /etc/fstab to automatically mount two external NTFS hard drives on boot, and decided to use the UUIDs as reference instead of the device names. Strangely, blkid reports that both ...
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2answers
3k views

Why are NTFS partition UUIDs shorter than normal?

If you use the sudo blkid command to view partitions with their uuids or just view the /etc/fstab (considering you have got some NTFS partitions) you will probably notice that UUIDs of the NTFS ...
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1answer
2k views

How to link against libuuid when cross compiling on Ubuntu for target Pico Zed Arm

My compile line is: $GCC -O0 -o ONVIFTargetServiceDiscovery ONVIFTargetServiceDiscovery.o Utilities.o Logger.o Socket.o -luuid -lpthread Where: GCC="arm-linux-gnueabi-g++" When executed, this ...
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1answer
73 views

Command line partition info

I'm looking for the name of a command like blkid but shows the data in sort of a tree from the command line. I saw it here on askubuntu and ran it, but I must have had a space before the command and ...
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2answers
8k views

On Boot: “The disk drive for UUID=… is not ready yet or not present”

I long ago deleted and disabled my swap partition but I still get the error The disk drive for UUID=d4b17eae-c547-4d02-8d1d-0279069d35f0 is not ready yet or not present when booting and it is ...
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1answer
874 views

Boot failure - goes to BusyBox - 'gave up waiting for boot device'

G'Day all Have tried installing 14.04.1 LTS on its own partition, then emptying the whole HDD and putting on and having similar results - 'gave up waiting for boot device' '/dev/disk/by-uuid/!...
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2answers
1k views

How to mount UUID under linux name /dev/sdx/

On my workstation after boot, sometimes the name for my same harddisk in linux changes from /dev/sdg/ to /dev/sdi/ How can I make this fixed, that the UUID is mounted exactly with the name /dev/sda ...
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677 views

Degraded mdadm RAID5 array & ARRAY UUIDs mismatch (Ubuntu 14.04.1)

Every reboot on my server results in a halt due to a degraded RAID5 (software) array. The same drive /dev/sdc appears to be dropping out each time. I ignore and boot with a degraded array any ways. ...