$UpCase (10) - File - NTFS Documentation
Description: NTFS Documentation

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# File - $UpCase (10)

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## Overview

This is a 128KB file full of capital letters. For each character in the Unicode alphabet, there is an entry in this file. It is used to compare and sort filenames.

## Attributes

Type | Description | Name
--- | --- | ---
0x10 | $STANDARD_INFORMATION |
0x30 | $FILE_NAME | $UpCase
0x80 | $DATA | [Unnamed]

## Layout of the File

### Unnamed Data Stream

Offset | Character
--- | ---
~ | ~
0x82 | A
0x84 | B
0x86 | C
~ | ~

## Notes

### Other Information

This file allows the system to compare filenames independently of their code page.

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