Questions tagged [uuid]

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4
votes
2answers
20k views

understanding /dev/disk/by- folders

Question: What does /dev/disk/by-pathdescribe? And where is this documented? Going through the meaning of what is displayed in the folders /dev/disk/by- I've got that far, and I wonder is this ...
0
votes
1answer
4k views

How to convert grub config to use kernel device names instead of UUID

I've got a bunch of identical systems on which I want to clone the same openSUSE 12.3 installation. I've set up clonezilla on PXE server. After appling the disk-image of on another machine, it fails ...
5
votes
2answers
4k views

How to find out UUID of a non-block USB device?

In a nutshell, the device I have is not a block device so blkid command doesn't suit me. But at least I can get some info about my device via lsusb -v command although it doesn't contain its UUID. ...
9
votes
4answers
42k views

UUID Of A drive that won't show up in /dev/disk/by-uuid or blkid

I have a USB drive that is not receiving a UUID. When I look at the contents of the /dev/disk/by-uuid it doesn't exist there. The dev point that the partition lives in is on /dev/sdb. I am able to ...
2
votes
1answer
1k views

Error mounting drive with fstab

I have an small server in my house with an external usb 2TB hard drive: /dev/sdb1: LABEL="Data" UUID="eedc3098-221d-4800-b8b4-efa4fef23f5f" TYPE="ext4" I have the next line in /etc/fstab: UUID=...
6
votes
3answers
10k views

How do you dual boot Debian and FreeBSD using GRUB2?

I've been trying to install FreeBSD alongside my Debian installation in a single partition. All examples readily present on the Internet had shortcomings: Some required chainloading the FreeBSD ...
1
vote
1answer
924 views

“Removing leftover files … Unknown user 'uuidd'. [FAIL]” on a fresh Arch Linux installation

I just fresh installed Arch Linux reecently and when booting i can spot a warning: Removing leftover files [BUSY] [/usr/lib/tmpfiles.d/uuidd.conf:1] Unknown user 'uuidd'. [FAIL] What could this be? ...
3
votes
1answer
4k views

UUID based on global MAC address

I used the uuid command from the uuid-1.6.2-8.fc17.x86_64 package to generate version 1 UUIDs. The man page said that the default is to use the real MAC address of the host, but when I decoded the ...
2
votes
3answers
537 views

Can I substitute partition number with UUID?

Here is my grub.cfg: menuentry 'Debian 6.0 on hard disk' { set isofile="(hd0,6)/home/toinstall/debian.iso" loopback loop $isofile search --no-floppy --fs-uuid --set=root 8b29114c-4f89-...
7
votes
2answers
1k views

Why did dd create a different uuid?

root@debian:/home/tiger# dd if=/dev/sda of=/dev/sdb bs=10240k 11447+1 records in 11447+1 records out 120034123776 bytes (120 GB) copied, 4729.59 s, 25.4 MB/s root@debian:/home/tiger# blkid /dev/...
63
votes
6answers
163k views

How can I look up a username by id in linux?

The command id can be used to look up a user's uid, for example: $ id -u ubuntu 1000 Is there a command to lookup up a username from a uid? I realize this can be done by looking at the /etc/passwd ...
3
votes
4answers
3k views

Generate a key (number?) based on part of the machine's hardware components

I'm wondering what is the best way to manually generate a hardware key based on certain components of the machine. Here's the thing: I want only certain type of machines to be able to communicate ...
40
votes
2answers
86k views

How to run custom scripts upon USB device plug-in?

What is the state-of-the-art method for automatically executing custom scripts upon USB device plug-in under current Linux distributions like Debian/CentOS/Fedora? For example if you want to ...
24
votes
8answers
31k views

How to change filesystem UUID (2 same UUID)?

I have a fedora guest OS in VMware. I want to expand /boot partition, so I add another virtual disk to this VM, and try to clone the disk. After dd if=/dev/sda1 of=/dev/sdb1, blkid report that /dev/...