# File System Troubleshooting
Photon OS includes commands to check and troubleshoot file systems.
- [Checking Disk Space](checking-disk-space.md)
- [Adding a Disk and Partitioning It](adding-a-disk-and-partitioning-it.md)
- [Expanding Disk Partition](expanding-disk-partition.md)
- [List Disk Partitions](fdisk.md)
- [File System Consistency Check Tool](fsck.md)
- [Fixing File System Errors When fsck Fails](fixing-file-system-errors-when-fsck-fails.md)