[Bug 1548120] Re: [xenial][initramfs-tools] support uppercase and lowercase uuids

[Manoj Iyer]

and lower case also works.
$ cat /proc/cmdline 
BOOT_IMAGE=/EFI/BOOT/vmlinuz-4.3.0-8-generic boot=local earlycon=pl011,0x3ced1000 console=ttyAMA1 debug user_debug=31 loglevel=9 uefi_debug e1000e.IntMode=1 pci=pcie_bus_safe acpi=force cpuidle.off=1 usb-storage.delay_use=1 rootwait rw root=PARTUUID=81780ad9-068c-4a80-a795-56856973b8f9 rootfstype=ext4

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Title:
  [xenial][initramfs-tools] support uppercase and lowercase uuids

Status in initramfs-tools package in Ubuntu:
  In Progress

Bug description:
  Initramfs tools does not support uppercase UUIDs. Initramfs-tools
  script/functions uses blkid to determine the device name from
  UUID/PARTUUID but if either of those are in uppercase blkid fails to
  return the name.

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