Linux Filesystem & Disk Errors: 10 Common Problems and Fixes
Working reference for the 10 most common Linux filesystem and disk errors. No space left on device, Read-only filesystem (errors=remount-ro after I/O failure), inode exhaustion (df -i), Permission denied (and the SELinux/AppArmor twin), Bad magic number in super-block, Disk quota exceeded, Stale file handle (NFS ESTALE), generic I/O errors with SMART correlation, /tmp full, fsck failure during boot. Each error covers description, root cause, common scenarios, and step-by-step fix. Includes cross-links to the Linux Disk & Filesystem command reference and to related troubleshooting topics (Storage/RAID, Performance).