Comment # 9 on bug 1028136 from Sekhemty -

There seem to be a problem, the UUID you are requesting me is not present. 
My disk is partitioned to use a dual boot with Windows. Recently I have
upgraded my Windows installation with a new version, and I basically recreated
that partition (sda2); I don't know if this could be the source of that missing
UUID.

Anyway, I have included some more info below; if you need something else just
ask.

# ls -l /dev/disk/by-uuid/
total 0
lrwxrwxrwx 1 root root 10 Apr  3 18:39 0cb47615-fe89-485a-90c8-99c3a4b4d83a ->
../../sda5
lrwxrwxrwx 1 root root 10 Apr  3 18:39 1E3C6F5C3C6F2E49 -> ../../sda2
lrwxrwxrwx 1 root root 10 Apr  3 18:39 40A46A15A46A0DAA -> ../../sda1
lrwxrwxrwx 1 root root 10 Apr  3 18:39 490f1cc3-4911-45a8-a7f0-a5f4f707554a ->
../../sda6
lrwxrwxrwx 1 root root 10 Apr  3 18:39 6613D39D2C74B6AF -> ../../sda3
lrwxrwxrwx 1 root root 10 Apr  3 18:39 bab51854-d247-4166-90cc-2b9041e5c199 ->
../../sda7


# lsblk -af
NAME   FSTYPE LABEL UUID MOUNTPOINT
sda                      
������sda1                   
������sda2                   /var/run/media/stefano/WINDOWS
������sda3                   /var/run/media/stefano/DATA
������sda4                   
������sda5                   /var/cache
������sda6                   /home
������sda7                   [SWAP]
sr0      


# sudo fdisk -l
Disk /dev/sda: 465.8 GiB, 500107862016 bytes, 976773168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x34fe34fd

Device     Boot     Start       End   Sectors   Size Id Type
/dev/sda1  *         2048    718847    716800   350M  7 HPFS/NTFS/exFAT
/dev/sda2          718848 205404159 204685312  97.6G  7 HPFS/NTFS/exFAT
/dev/sda3       205404160 407547903 202143744  96.4G  7 HPFS/NTFS/exFAT
/dev/sda4       407547904 976773167 569225264 271.4G  5 Extended
/dev/sda5       407549952 489474047  81924096  39.1G 83 Linux
/dev/sda6       489476096 968581119 479105024 228.5G 83 Linux
/dev/sda7       968583168 976773119   8189952   3.9G 82 Linux swap / Solaris


# sudo blkid /dev/sda{1..7}
/dev/sda1: LABEL="System Reserved" UUID="40A46A15A46A0DAA" TYPE="ntfs"
PARTUUID="34fe34fd-01"
/dev/sda2: LABEL="WINDOWS" UUID="1E3C6F5C3C6F2E49" TYPE="ntfs"
PARTUUID="34fe34fd-02"
/dev/sda3: LABEL="DATA" UUID="6613D39D2C74B6AF" TYPE="ntfs"
PARTUUID="34fe34fd-03"
/dev/sda4: PTUUID="d42159ed" PTTYPE="dos" PARTUUID="34fe34fd-04"
/dev/sda5: UUID="0cb47615-fe89-485a-90c8-99c3a4b4d83a"
UUID_SUB="0cbe41e3-eb24-4f83-a27d-d5aae5d26c68" TYPE="btrfs"
PARTUUID="34fe34fd-05"
/dev/sda6: UUID="490f1cc3-4911-45a8-a7f0-a5f4f707554a" TYPE="ext4"
PARTUUID="34fe34fd-06"
/dev/sda7: UUID="bab51854-d247-4166-90cc-2b9041e5c199" TYPE="swap"
PARTUUID="34fe34fd-07"