# Raspberry Pi Plex Server not seeing files on flash drive **URL:** \ **Category:** Apps & Creations\ **Tags:** server-linux-arm\ **Created:** [September 2, 2018, 6:13pm UTC](https://forums.plex.tv/t/raspberry-pi-plex-server-not-seeing-files-on-flash-drive/303925 "2018-09-02T18:13:06Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![drmagoo](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/drmagoo/32/13982_2.png) [@drmagoo](https://forums.plex.tv/u/drmagoo)\ **Post date:** [September 2, 2018, 7:59pm UTC](https://forums.plex.tv/t/raspberry-pi-plex-server-not-seeing-files-on-flash-drive/303925/2 "2018-09-02T19:59:40Z")
Linux file permissions. Please read the following guide to learn how to successfully grant PMS Linux user `plex` access your your USB drive: > [@Linux Tips](https://forums.plex.tv/t/linux-tips/276247/2): > > Using other hard drives (Windows or Linux) with PMS This How-To is written to help with Internal and External drives. It also is written to demonstrate how to cope with NTFS and EXT4 formatted drives. By logical extension, any format supported by Linux can be handled using the technique shown here. In all cases, the goal is to give user plex permission to read your media files which Linux doesn’t allow by default due to its strict security model. We will walk through the steps needed … --- _[View the full topic](https://forums.plex.tv/t/raspberry-pi-plex-server-not-seeing-files-on-flash-drive/303925)._