Contents
When to use DF to calculate disk space?
If an argument is the absolute file name of a disk device node containing a mounted file system, df shows the space available on that file system rather than on the file system containing the device node (which is always the root file system).
Why does DF show the size of the partition?
So df is really showing the size of your filesystem, which is usually the size of the device, but this may not be true in your case. Does your filesystem extend over the whole of your partition? make any difference? This command tries to increase your filesystem to cover the entire partition. But make sure you have a backup if you try this.
When to use du and DF in Excel?
Sometimes du and df are used to get a free block value: df is used to report the total block count, and then the value returned by du -s /filesystem_path is subtracted from that total to calculate the free block value. However, this method of calculation yields a value that is greater than the free block value reported by df.
How is disk space divided up in Linux?
However, operating systems divide that space up so that 1024 bytes = 1 kilobyte. Because of this, a 1000-gigabyte hard drive ends up with roughly 930 gigabytes of usable storage. The du command displays disk usage. This tool can display disk usage for individual directories in Linux, giving you a finer-grained view of your disk usage.
Why are partition size and DF output not working?
Some amount may be used up by MBR. sda1 isn’t your whole disk but its first primary partition. You might have created other unmounted partitions that do not show up in df output or simply have sda1 not filling all usable space for some reason or having the filesystem not using all available space in its partition.
Why does DF always report less than 5% of root space?
The SIZE/OFFSET column will offer the character size of the file in question. 1) df doesn’t report the space reserved for root (5% by default) on unix-style filesystems. So df will always report less than you ought to have.
Why do ” DF ” and ” du ” commands show different disk usage?
While df is to show the file system usage, du is to report the file space usage. du works from files while df works at filesystem level, reporting what the kernel says it has available. Continue reading the du manpage support this: Summarize disk usage of each FILE, recursively for directories. it says du works with files.