Comment 4 for bug 1548120

tr trick does not work in the initramfs environement.

(initramfs) echo "81780AD9-068C-4A80-A795-56856973B8F9" | cut -f 2 -d = | tr '[
:upper:]' '[:lower:]'

81780AD9-068C-4A80-A795-56856973B8F9

But awk works:
(initramfs) echo "81780ad9-068c-4a80-a795-56856973b8f9" | awk '{print tolower($0)}'

81780ad9-068c-4a80-a795-56856973b8f9

I will resubmit the patch using awk instead.