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1What: /sys/firmware/efi/vars2Date: April 2004, removed March 20233Description:4 This directory exposed interfaces for interacting with5 EFI variables. For more information on EFI variables,6 see 'Variable Services' in the UEFI specification7 (section 7.2 in specification version 2.3 Errata D).8 9 The 'efivars' sysfs interface was removed in March of 2023,10 after being considered deprecated no later than September11 of 2020. Its functionality has been replaced by the12 'efivarfs' filesystem.13