A universally unique identifier (UUID)

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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' ...
2
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1answer
163 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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92 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. ...
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1answer
37 views

How to edit Grub under /boot [closed]

I want it to edit my Grub but could not find the menu.lst file in the grub directory, I am running Ubuntu 12.04. Also how can I find out what mu UUID on sda is and can you recommend a software to ...
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1answer
98 views

Problem with UUID

I have tried those tutorial on this website base on the disk drive for uuid is not yet ready or not present. I am trying to boot a live USB also and the message is no default or ui configuration ...
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149 views

Old Disk in new machine gave error: Couldn't find device with uuid

I'm running Zimbra email server on Ubbuntu Server 10.4 as VM , we got an issue with VM as it was not able to startup. I installed fresh copy of Ubuntu Server 12.4, when I'm trying to add disks of old ...
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1answer
448 views

install and load uuid-ossp on PostgreSQL

How can I install uuid-ossp extension on PostgreSQL 9.3? Is it using apt-get install? I did select * from pg_available_extensions; but I found no extensions that relates to uuid-ossp.
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1answer
765 views

mdadm warning (system unbootable) from update-initramfs, mkconf's suggested fix seems inconsistent with mdadm's description of problem

Summary: update-initramfs says system unbootable, message points to mkconf which suggests rewrite to mdadm.conf that would appear to break the RAID, system up (for now) but next reboot may kill it, ...
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0answers
165 views

System crash: empty /sys/class/backlight (deleted acpi_video0) & now the error “disk drive is not ready yet or present”

I "tried" to set the default brightness for Ubuntu 14.04. Following here, At first I did: echo 5 > /sys/class/backlight/acpi_video0/brightness then: sudo apt-get install xbacklight then ...
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25 views

How can I recover the UUID after changing it?

I changed the UUID of my HDD. Is there any way to recover it?. After changing it, the grub fails.
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1answer
158 views

What is the UUID of my swap drive?

I'm dual-booting Ubuntu 13.10 on an ASUS Windows 8 with an SSD (but not on the SSD). I configured it when installing to use a swap drive, but it doesn't seem to be using it since I get this message ...
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4answers
558 views

How to rename /dev/sdax(partitions) in Linux

I made a partition like /part on my machine with some important data... But I can't stand the name of it... I want a clear solution to resolve it and change the name of it to for example /test... ...
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3answers
119 views

What is the real benefit of using UUIDs?

I have always seen people discuss using UUIDs in hard drives instead of /dev/sdN. What is the real benefit of using a UUID? Is it faster, more reliable, easier to remember (ha lol no), what? And, ...
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80 views

My internal SATA 3TB WD only data drive mounts ONLY after shutdown, cant reboot

i am in need of some help.. TL;DR : system works fine after shutdown, after reboot it cant find / wont mount data drive (if i manually skip the mounting it works) I am using ubuntu 12.04 (server ...
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2answers
47 views

Permissions - Listing uid

Two part question: What is a world-writeable directory and file? I'm looking for a script that would display the directories on all partitions of a server, that are not owned by root or a system ...
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151 views

Change permission of raw /dev/sdb by UUID

I am using "Apache Traffic Server" which may and it is better to use raw device like /dev/sdb without mounting it as a directory . So i should change the permission of /dev/sdb from root to user ...
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3answers
2k views

How to identify game controller for SDL2 in Ubuntu?

I'm trying to make Costume Quest (game by Double Fine) use either of my gamepads and according to developer's support all I need to do is add SDL2 config line to SDLGamepad.config file, however, I ...
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1answer
302 views

How to use 'rsync' to copy ubuntu system to another disk?

I use LiveCD and rsync -av to copy ubuntu system to another disk(same machine). What needs to be revised? UUID in boot.cfg. UUID in fstab. Anything else? Do I need to revise 'initramfs'? ...
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1answer
718 views

Why /dev/disk/by-id/ change after a suddenly server power-off?

I'm management a server that in /etc/fstab have references to some partitions using /dev/disk/by-id/DISK_ID-partN. The server suddenly power-off and DISK_ID part of /dev/disk/by-id/DISK_ID-partN ...
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1answer
771 views

Moving a Wubi install to a different Windows 'drive'

I was wanting to move my wubi install from drive E: to C: as to have a working backup location that is not on the drive which I will be migrating to a regular install. (I want to make the E: drive a ...
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1answer
2k views

What's the difference between USB, UUID, Disk identifier and Vendor ID?

I need a persistent, unique identifier of a USB drive that never changes, to make a mount point folder. Can you explain the difference between Disk Identifier, Vendor ID and UUID? Can you also advise ...
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1answer
2k views

Where do I find the UUID of a network connection on Ubuntu Server? (no Network-Manager)

I have a clean installation of Ubuntu 12.04 Server. I would like to find the UUID for a network connection. How do I find this? ifconfig -a does not list it: eth0 Link encap:Ethernet HWaddr ...
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1answer
1k views

Can I force grub2-update NOT to use uuid?

I am experiencing install hell trying to add an installation of Ubuntu 12.10 and Scientific Linux 6.3 to an old machine (BIOS not EFI) with Debian Squeeze and Linux Mint 10. The installs seem to go OK ...
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2answers
2k views

How to copy /sda3 to /sda1? UUID's can't be similar

/dev/sda is a 400 gig drive. It's partitions WERE: /sda1 - Windows boot partition (100 meg); /sda2 Windows "C:\" (68 gig); /sda3 is Linux boot partition; /sda5 is /home partition; /sda6 is linux-swap. ...
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1answer
409 views

moved ubuntu folder from C: to D: drive how to correct UUID entries

I had a previous Ubuntu 11.10 installation which was done using Wubi in D: drive of my computer. The corresponding grub.cfg entries are: http://paste.ubuntu.com/1546414/ Now I wanted to use Ubuntu ...
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1answer
6k views

LUKS initramfs boot problem: “/dev/mapper/ubuntu-root does not exist.” How can I fix it using a backup?

First time asker, relatively new to Ubuntu/Linux. Haven't had much luck with the search function. Please forgive the essay below - the problem is a bit unique, I think... I'm running 12.04 on a ...
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1answer
500 views

How do you get a UUID from a a device on the grub2 prompt?

I'm trying to perform some grub2 troubleshooting related to this question, and as part of the troubleshooting I'm trying to figure out what grub can see during the boot. How can I get the UUID of, say ...
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1answer
333 views

blkid encrypted partition to get UUID

Partition is created with: cryptsetup -y create tmp1 /dev/sdc3 sudo blkid /dev/sdc3 gives nothing and partition sdc3 cannot be mounted. Am i rigth that partition created with cryptsetup create ...
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2answers
526 views

Is there a manufacturer unique identifier on a hard drive and how do I read that identifier?

I understand the concept of a file system UUID. Is there a manufacturer unique identifier on a hard drive, apart from the file system UUID, and how do I read that identifier?
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1answer
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What scenarios causes a hard drive UUID to change?

What scenarios causes a hard drive UUID to change? Are there any manufacturer assigned unique ids for hard drives that is less likely to change?
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1answer
280 views

Does a CD-ROM drive also have a UUID like a hard drive?

Does a CD-ROM drive also have a UUID like a hard drive? How do I determine what the UUID is?
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1answer
740 views

Removed swap when editing fstab file-not sure

I wanted to remove the warning when starting Ubuntu (Continue to wait, press S to skip or M for manual recovery). I did it! But what I did not want to do was removing my swap partition. I am not sure ...
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3answers
3k views

Why can't Mint boot my cloned Ubuntu partition? (UUID issue)

I've been running Ubuntu 10.04 and just installed Linux Mint 13. I may go with Linux Mint full-time, but for now I wanted to install it to the first partition, but keep Ubuntu bootable. Device ...
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1answer
528 views

Booting from cd, how update grub2 to reflect changed uuid?

I changed disks around now I get a message from grub (grub2) saying disk w/ uuid=XXXX does not exist. I've booted from a usb flash drive now, but can't figure out how to run the grub update so that ...
2
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1answer
563 views

How are the values of $UID generated?

On executing 'echo $UID' in terminal, the output is: 0 for root user 1000 for admin(in my case) 119 for guest user. How are these values generated?
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2answers
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Converting physical Ubuntu 11.10 to VMware

We recently go an VMware ESX Server. No I tried, using the Converter from VMware, to convert smaller physical servers to virtual servers. Unfortunately, thats not easy. First, I got the problem that ...
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1answer
4k views

How do you mount a LVM patition that has the same VG name as my current partition

Ive been tearing my hair out for about a week now trying to figure out how to do this. I have two HDD's in my server, both 250gig. They both have ubuntu installed, one is currently booted. I want to ...
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2answers
3k views

grub workaround for cannot find UUID in dual boot system fails and now grub won't boot anything

New clean install of x86 11.10 desktop. Dual boot with windows XP and Linux on separate drives. After install grub will not boot Windows, but by changing boot drive boots fine. When I go to fix ...
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3answers
41k views

MDADM Superblock Recovery

After a power cycle I found my RAID 5 Array no longer working. I tried various methods to reassemble the array but nothing has worked so far. I believe I need to recreate the superblocks and UUIDs ...
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1answer
215 views

Ubuntu doesn't boot after adding a bootflag to the Windows partition

I have Ubuntu 10.10 installed on one (physical) hd and on the other one Windows. On both drives grub is installed to boot both operating systems. When I wanted to install SP1 for Win 7 I had to add a ...
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1answer
802 views

Constant UUID on USB install

I've got an Ubuntu install on a USB with a separate NTFS partition, can I expect the same UUID for the partition if I removed and reattached the USB to a computer?