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I have a 500gb hard drive, but only 434 usable?
I got a new dedicated server and it came with 500gb. But after fresh OS reinstall, it only shows 434 as available?
Filesystem Size Used Avail Use% Mounted on
/dev/sda2 458G 939M 434G 1% /
tmpfs 988M 0 988M 0% /dev/shm
/dev/sda1 192M 24M 159M 13% /boot
Using Centos. Please someone explain why this is, Thanks.
Well a 500gb drive aka the marketing number is 465gb in reality. It's the difference between counted 1000 or the correct 1024. This is a pretty basic sysadmin concept, sales and marketing always lie.
But, if you look at the size
458G 939M 434G
Its used 939mb, out of 458gb, so how does it leave 434gb?
EXT and similar file system reserve space, if you fill it the performance goes through the floor so 5-10% gets reserved. man tune2fs or the equivalent for your fs type.
Originally Posted by
Filesystems normally reserve some space when an OS is installed. It should be around 10%.
OP: It is normal and you can relax :-)
No one wants to cheat you. Just calm down
Re: I have a 500gb hard drive, but only 434 usable?
The difference you're seeing is between Gigabytes (GB) and Gibibytes (GiB). The output of the df command shows GiB and not GB which is the value used by manufacturers in many cases. It is perfectly normal to see what you are seeing.
It means it's like 500000MB, they took 1GB as 1000MB not 1024MB
It is fine, space missing is used by the OS, /tmp and /boot.
This reminds me when I got my first server
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