Questions tagged [uuid]
The uuid tag has no usage guidance.
130
questions
0
votes
2answers
48 views
Black arch Boot problem, UUID not found
I’ve installed black arch “from live iso” and it was installed successfully
But after reboot it stuck in black screen
starting version 245.5-2-arch
ERROR: device ‘uuid=xxxxxxxxxx‘ not found skipping ...
0
votes
1answer
48 views
Changing the windows UUID volume with Debian
I'd like to be able to put an ID on a USB key formatted in NTFS under debian and be able to read it with Windows 7 and 10.
As the identifier must be unique, I prefer to use UUID rather than label.
I ...
0
votes
1answer
18 views
RPI root partition lost PARTUUID and can't boot
So I cloned a RPI sd card so I could run the same system at home and at work. The sd cards were slightly different sizes so after I ran dd I had to run resize2fs and fsck. If I boot the Pi with this I ...
0
votes
3answers
60 views
What triggers disk's UUID to change?
On the same model of industrial PCs, I see UUID of the main SSD changed. Those 2 IPCs are restored from 2 similar but different Linux disk images. Question is as per the title. UUID of the main disk /...
0
votes
0answers
6 views
When cloning from an OEL7 template VM in VMware, how do you change any unique identifying info that may be redundant on all clones?
I know there is UUID and other info that is used for disk partitions and network. I am most concerned that I would have issues somewhere by all machines in an environment that were built using the ...
0
votes
2answers
40 views
ZFS Recovery Mirror-0 UNAVAIL missing device
I'm new to ZFS and I screwed things up big time. I had multiple ZFS pools because I didn't realize you could have separate mirrors under the same pool. I am still rebuilding array, so one of my ...
2
votes
2answers
57 views
Efficient way to obtain a device mountpoint from its UUID
In a script I'm working on, a variable UUID must be used in obtaining the current mountpoint a device is attached to. The solution I came up with is this one:
UUID='fc70ae3d-65e7-4437-a371-...
0
votes
2answers
55 views
How to process wipefs command output?
My command, wipefs /dev/sdX, gives the below output:
offset type
----------------------------------------------------------------
0x111 ext4 [filesystem]
...
-1
votes
2answers
214 views
How do I install grub on a disk drive using a UUID?
On my Arch Linux I am trying to install GRUB as follows:
grub-install /dev/sda
Instead of /dev/sda to do with UUID.
However two points to bring up:
I cannot find a UUID for /dev/sda only for /dev/...
1
vote
1answer
106 views
wrong partition UUID in fstab and partition showing as W95
I have Win10 / Ubuntu 18.04 dual boot, and something messed up my partitions. I did try to resize the Win10 partition in order to enlarge my Ubuntu partition, but that didn't work so I resized back ...
1
vote
2answers
118 views
How to correctly get the UUID of the entire disk?
As UUID's are assigned in partitioning phase (by software), there is no UUID available for entire disk.
However, /dev/disk/by-id/ contains promising information for the same purpose. We can get the "...
0
votes
1answer
2k views
Debian Buster - UUID Does not exist. Dropping to shell problem
I have no idea what I did but when I startup I get this message in BusyBox:
Give up waiting for root file system device. Common problems:
-Boot args (cat /proc/cmdlines)
-Check rootdelay= (did the ...
0
votes
1answer
73 views
Changing the UUID of NTFS VeraCrypt-encrypted volumes under Linux?
(Partially related to this but the case is significantly different)
Recently I have cloned a drive and I need to use both in my system without formatting either one of them, so I need to change one ...
1
vote
1answer
82 views
Mount points in /etc/fstab on Debian system for an encrypted partition
I recently installed Debian 10 on my laptop and for the first time I decided to give file encryption a go.
But I've found something interesting in the /etc/fstab file, and it's that it doesn't use ...
1
vote
2answers
50 views
Why does lvm2 use mixed case UUIDs?
I noticed that lvm2 objects use mixed case UUIDs:
~ # lvdisplay
...
0
votes
0answers
19 views
Registration of new nodes in a network
We install Debian (server variant) on a new client node (possibly behind a masquerader) in our network.
Now we need to assign an autogenerated UID and secret keys(s) (for SSH and for API such as ...
14
votes
5answers
2k views
Why is drive/partition number still used?
Many times, especially when messing around with boot-loaders, I'll see numerical drive and partition numbers used. For instance, in my /boot/grub/grub.cfg I see set root='hd0,gpt2', my UEFI boot ...
3
votes
2answers
286 views
“sort -nu” on uuids
anyone could explain why "sort -nu" returns only 1 unique line in example below?
$ cat /tmp/test_
1e971713-31e4-62d0-a3d1-37c0610c10e5
1e97d59f-bc32-6126-b7b1-0b52ddd35273
1e971713-31e4-62d0-a3d1-...
0
votes
1answer
311 views
/etc/fstab - using bash command output to get UUID?
I placed an entry in my fstab file to add a swap partition.
I used output of a bash command to get the UUID of vdb1 partition(I can't copy paste).
Like this:
UUID=$(blkid -o value -s UUID /dev/vdb1)...
0
votes
0answers
198 views
Dropped into Arch emergency shell, incorrect FSTAB causes mounting issues, keyboard does not work, installing Arch onto a USB key using QEMU
This is my first time trying to install Arch so my apologies if I don't understand your answer. Here is my problem. I am using the QEMU emulator (x86_64) to install Archlinux on a 128GB Samsung USB ...
2
votes
1answer
396 views
why do some directories have .uuid directory in a directory?
I have seen this quite a few times. In some random directories there is usually a .uuid file or directory therein. The directories are nothing special so as to speak. They are mostly random media ...
1
vote
1answer
1k views
Change PTTYPE and UUID of an fdisk created partition
I've got two systems. On one, I decided to try and increase the virtual disk /dev/sda. So I delete the partition using fdisk and recreate it with a larger end size but identical start location. ( ...
2
votes
1answer
869 views
Short and long uuids under /dev/disk/by-uuid
There are several hard disk partitions on my system (Linux josDeb 4.9.0-8-amd64 #1 SMP Debian 4.9.144-3.1 (2019-02-19) x86_64 GNU/Linux). It is working with:
bejo@josDeb:~$ ls -l /dev/disk/by-uuid
...
1
vote
3answers
233 views
Why use udev rules for naming, if we could just use /dev/disk/by-uuid?
I don't understand the inclination towards using udev rules for raw devices. Example for Oracle ASM devices, it recommends using udev rules for naming raw devices, as the device order can be ...
2
votes
2answers
217 views
How to tell without knowing the mount point that a device UUID is mounted?
System: Linux Mint 19.1 Cinnamon 64-bit, based on Ubuntu 18.04 LTS.
I would like to know if it is possible to get the following information:
Is this UUID (of a block device) mounted or not? (without ...
3
votes
3answers
550 views
reliable scripting way of obtaining UUID of boot partition
I want to script a somewhat automated method for editing /etc/default/grub and appending fips=1 boot=UUID=???? to GRUB_CMDLINE_LINUX=
coincidentally /etc/fstab contains UUID=12345blabla /boot xfs ...
1
vote
2answers
42 views
Partition recovered
Partitions MBR has been destroyed accidentally by a friend, Then most partitions are unviewable which is too bad, can all the partitions be recovered? I have a text file including the original ...
8
votes
2answers
6k views
Create unique random numbers (UUIDs) in bash
I want to create random unique numbers (UUIDs) as the following
node.id=ffffffff-ffff-ffff-ffff-ffffffffffff
First I tried this
$ rndnum=` echo $RANDOM"-"echo $RANDOM"-"echo $RANDOM"-"echo $RANDOM"-...
1
vote
1answer
283 views
System goes into initramfs mode
I am trying to boot my system but it goes to initramfs and nothing happens.
On using exit command it shows:
ALERT! UUID=3668c6fc-7986-490b-8642-705c4532d16a does not exist. Dropping to a shell!
On ...
0
votes
0answers
180 views
How to make exfat appear as a disk on Computer (RedHat 6)
I have a redhat 6 on 1TB HDD and another 1TB HDD with exfat format, anyway on Computer I can find the drive where redhat installed but not the exfat drive.
I do add a line to /etc/fstab for auto ...
1
vote
3answers
946 views
Drive won't boot from its Grub, but will from another drive's Grub, after cloning, why?
It was a month ago, so if you ask me on details, I might still remember, but better act on information that can be given as of now. Due to the lack of time, I did not ask for help here.
I have cloned ...
2
votes
1answer
1k views
What are the use cases for a hard disk's WWN?
I noticed today while setting up a new system that the disk as represented by /dev/disk/by-id also had a WWN link that I was not familiar with:
My research suggests that this is a "World Wide Number" ...
3
votes
2answers
5k views
How do I create a zpool using uuid or truly unique identifier?
I created my first zpool the other day, assigning by drive letter, and found that when I rebooted it was degraded. Upon closer inspection, I realized that my drive letters had changed with reboot, so ...
0
votes
1answer
992 views
Add PARTUUID to DOS MBR
I have an MBR style formatted SD card where I need a PARTUUID in order to mount a partition there as the rootfs (via linux kernel parameter root=PARTUUID=...). Using an fs UUID does not work.
...
1
vote
1answer
96 views
UUID of fs - where are they stored?
Recently I tried to install Ubuntu Studio 18 and upon restart was given GRUB prompt, not Linux graphic login. Surprised, I started to investigate and found that grub.cfg file in ESP partition contains ...
1
vote
2answers
3k views
How to change UUID after cloning a Mac HDD with `dd`?
After 1 day of googling and try&error I give up and ask for help.
Long story short: I cloned internal HDD of my iMac (Mid 2011) to external SDD with dd command. Now I have two identical discs ...
0
votes
1answer
110 views
what is the advantage to configure the network ETH with UUID?
what is the advantage to configure the network with UUID?
uuidgen eno093736
1b64d026-c6a6-447c-85aa-40c5d2db2c4e
for example we want to configure BOND under /etc/sysconfig/network-script
what is ...
4
votes
3answers
2k views
Store a custom serial number on a USB flash drive, immune to overwriting
I'm working with massive amounts of USB flash memory.
I'd like to be able to track events regarding the USB drives.
Specifically: I perform f3 tests, format the drives and write data to them.
I'm ...
1
vote
0answers
508 views
Can't run 'update-grub'
I've got some trouble with my Ubuntu-System:
update-grub
Generating grub configuration file ...
grub-probe: error: disk `mduuid/c7ac5a8fef833db7b45d6c2ebb2e20e6,1' not found.
But I'm still able to ...
1
vote
2answers
2k views
how to perform xfs_repair on disk that is actually UUID
we have redhat machines version 6.x
we want to fix the file-system on one of our disks
UUID=198s5364-a29c-429e-b16d-e772acd /data_SA xfs rw,noatime,inode64,allocsize=16m 1 2
but ...
-2
votes
1answer
2k views
When trying to mount my UUID can't be found, how can I find
I'm building a lighting node, and run the command [sudo mount -a] I get this error saying my UUID I can't be found.
Can someone please help?
0
votes
1answer
590 views
UUID's when changing hardware
My question is this...
In /etc/sysconfig/network-scripts/ifcfg-eno1 there is a UUID to identify the on-board network interface.
I also notice now that some partitions in fstab are also identified by ...
3
votes
1answer
2k views
Why use UUIDs in /etc/fstab instead of device names? [duplicate]
What is the reasoning behind using UUIDs in /etc/fstab instead of device names (like /dev/sbd2)?
Device names &/or partition numbers seem substantially cleaner from an administrative viewpoint.
1
vote
1answer
638 views
debian stretch UUID package
I am running Debian 9.3 (Stretch). I am trying to install some tools from Vmware and it asks for a package UUID 0.03 or newer. How can I upgrade UUID to newer version? It does not proceed any further ...
0
votes
1answer
1k views
Slackware64 14.2 - GRUB2 - How set default <UUID> instead <DEVICE>?
i am trying the grub configuration file "/boot/grub/grub.cfg" in the kernel line, set "root=UUID=" instead "root=/dev/"
for example when i ran :
grub-mkconfig -o /boot/grub/grub.cfg
the file /boot/...
0
votes
0answers
46 views
Migrating Linux to new system
I read a couple posts about migrating Linux from one PC to another PC and my understanding is that Linux will just move and work without issue. Based on my changes this should be true.
I am waiting ...
0
votes
1answer
803 views
is it possible to capture the UUID number before creating file system on disk
is it possible to capture the UUID number before creating file system on disk?
if yes how - by which command ?
blkid ( before run mkfs.ext4 on sdb disk )
<no output>
blkid ( after run mkfs....
1
vote
1answer
117 views
how to identify UUID conf or ordinary dev conf from fstab
we need to add disks on more then 100 redhat machines,
therefore we need to update also the /etc/fstab on each machine
the problem is that some machines configured with UUID and other with ordinary ...
2
votes
2answers
1k views
UUID in fstab + in which cases we must not configured UUID in fstab
discussion - we have redhat linux machines and my question is about the UUID configuration in /etc/fstab file , and in which cases UUID risk the OS
as I understand we MUST NOT use UUID in /etc/...
3
votes
3answers
183 views
in which cases it will be problematic to configure UUID in fstab
We are thinking about to change all Linux fstab configuration to work with UUID instead the current configuration
Some of the disks are with non RAID and some of the disks are with RAID10
I searched ...
