Commads: Why df -h and lsblk show different sizes of my one and only certain drive?

[dhubs]

good day dear Community


hope this goes into the right sub-forum

well the thing i am struggling at the moment:



okay - the commands work differently.

lsblk: normally i am using the lsblk command to view the available disk devices and their mount points (if applicable)
df-h: well in general i use df -h command to verify the size of the file system for each volume.


Teh Question is : Why df -h and lsblk show - in all most every case a different sizes of my one and only certain drive

[michaelk]

The reference of the output of lsblk is GiB. If you purchased a 1 TB disk the number is based on 1000 but in reference to Gib (1024) is 931 GB. The partition size versus filesystem sizes are different because a filesystem contains overhead called metadata of which ext4 is about 2.3%. filesystem size does not include metadata. In addition ext4 has 5% reserved space not necessarily counted. All adds up to be the size of the partition.

df -h displays size in powers of 1024.

[kathlinx]

The difference in drive size reported by df -h and lsblk is normal - df -h shows the usable file system space, while lsblk reports the raw device size. This explains the slight discrepancy you're seeing.