ubuntu@ubuntu:~$ ls /sys/firmware/efi/
config_table  fw_platform_size  runtime      systab
efivars       fw_vendor         runtime-map  vars
ubuntu@ubuntu:~$ sudo parted -l
Model: ATA WDC WD2500AAKX-0 (scsi)
Disk /dev/sda: 250GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags: 

Number  Start   End     Size   File system  Name                  Flags
 1      1049kB  538MB   537MB  fat32        EFI System Partition  boot, esp
 2      538MB   1050MB  512MB  ext2
 3      1050MB  250GB   249GB


Warning: The driver descriptor says the physical block size is 2048 bytes, but
Linux says it is 512 bytes.
Ignore/Cancel?