I have 2 gb free but still i have 100% use why ?

[shavecat]

pi4 retropie 4.6

   |*|      Filesystem      Size  Used Avail Use% Mounted on
   |*|      /dev/root       232G  220G  2.2G 100% /
 ..|*|..    Uptime.............: 0 days, 02h07m16s
.*** * ***.  Memory.............: 49832kB (Free) / 1803296kB (Total)
*******@@**  Running Processes..: 138
`*****@@**'  IP Address.........: 192.168.14.156
`*******'   Temperature........: CPU: 47°C/116°F GPU: 47°C/116°F
  `"""'     The RetroPie Project, https://retropie.org.uk

any ideas? thanks

[dankcushions]

@shavecat 5% is used by root, so you need to free ~13GB before the % goes down.

[shavecat]

@dankcushions
really 13 gb free ???
i heard u need 1 gb free .

[Clyde]

As @dankcushions said, it's a percentage, so it depends on the total size of the file system.

This line of commands prints the reserved space in MB for the root file system:

sudo tune2fs -l $(df | grep -E '/$' | cut -d\  -f 1) | egrep "Reserved block count|Block size" | paste -sd\ | awk '{print ($4 * $7 / ( 1024 * 1024 ) ), "MB"}'

source: https://superuser.com/questions/444269/display-filesystems-free-space-available-to-the-root-user

edit: I just found out that it has to be modified to work on RetroPie.

sudo tune2fs -l /dev/mmcblk0p2 | egrep "Reserved block count|Block size" | paste -sd\ | awk '{print ($4 * $7 / ( 1024 * 1024 ) ), "MB"}'

/dev/mmcblk0p2 should be the root device of RetroPie on a Raspberry Pi. You can change it to any block device with an ext FS to see its reserved space.