Your system information

• Steam client version (build number or date): 1.0.0.78-2
• Distribution (e.g. Ubuntu): Arch
• Opted into Steam client beta?: [Yes/No] No
• Have you checked for system updates?: [Yes/No] Yes
• Steam Logs: [generate by running this command in a terminal tar -zcvf ~/Desktop/steam-logs.tar.gz ~/.steam/steam/logs]
• GPU: Nvidia/Intel

Please describe your issue in as much detail as possible:

Cannot download games on extenal disk, I have a SSD with ext4, which I mount with: sudo mount /dev/X /d2

Already did: sudo chmod -R 777 /d2 and sudo chown -R $USER:$USER /d2, and my actual folder permissions are:

$ ls -ld /d2
drwxrwxrwx 4 yaiko yaiko 4096 Jan 15 19:23 /d2
$ ls -ld /d2/Steam
drwxrwxrwx 2 yaiko yaiko 4096 Jan 15 18:32 /d2/Steam

Already tried Repearing Library and Deleting download cache.

Steps for reproducing this issue:

1. Download game.
2. Failed: An error occurred while installing ...: "disk write error"