File System Interface and Directory Structure
A file is a named collection of related information kept on secondary storage. To the user it is the smallest unit of storage: data reach the disk only inside files.
Operating Systems · topic
File systems
Files, directories and links, contiguous, linked, FAT and indexed allocation, inode block pointers and maximum file size, disk reads per access, and free-space management with bitmaps, lists, grouping and counting.
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File Allocation Methods and Free-Space Management
A disk is an array of fixed-size blocks, and a file is a sequence of logical blocks 0, 1, 2 and so on. The allocation method decides which disk blocks hold a file and how the file system finds logical block i.
File systems cheat sheets
One-page visual sheets for this topic, in the sheet library on the store. Previews are free; the full sheets come with the subject pack.