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Why do Disk utility and Gparted show different information for the same hdd(s)?

rated 0 times [ 1] [ 0] / answers: 1 / hits: 2190 / 2 Years ago, tue, december 14, 2021, 2:28:05

Gparted and Disks utility give me different sizes for my hard drive and its partitions. Is there a reason, for both programs, to list different information or is it an error?

GParted & Terminal output: sudo lsblk -o NAME,FSTYPE,SIZE,MOUNTPOINT,LABEL

dev/sda = 298.1 Gib

/dev/sda3 = 191.40 GiB

/dev/sda4 = 92 GiB

/dev/sda5 = 88.40 GiB

/dev/sda6 = 3.60 GiB

Disks Utility output

dev/sdb = 320 Gib

/dev/sda3 = 206 GiB

/dev/sda4 = 99 GiB

/dev/sda5 = 95 GiB

/dev/sda6 = 3.9 GiB

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1 Year ago

answered 2 Years ago otputler · Accepted Answer

The result shown by sudo lsblk -o NAME,FSTYPE,SIZE,MOUNTPOINT,LABEL performs calculations using the binary prefix i.e. multiples of 1024 (which is 2¹⁰). So 500107862016 bytes would be equal to 465.76 GB or approximately 466 GB. (You can use -b switch to print in bytes instead of human readable as sudo lsblk -b -o NAME,FSTYPE,SIZE,MOUNTPOINT,LABEL.)

Calculation:



500107862016 bytes = (500107862016 / (1024 ^ 3)) GB = 465.76 GB

While Disks Utility uses decimal prefix for calculation so expressed as multiples of 1000. So 500107862016 bytes here would mean 500.11 GB or 500 GB approx.

Calculation:



500107862016 bytes = (500107862016 / (1000 ^ 3)) GB = 500.11 GB