User Guide

The root folder
3.5.3 Files with Short Names
As discussed, a file name and other attributes are registered in a folder record.
A folder record has the following structure, or main bytes of a folder record
indicate the following values:
Offset Length Purpose
bytes bytes
0 8 File name up to 8 symbols.
8 3 File extension (type) up to 3 symbols.
0Bh 1 File Attributes:
Bit 0 – Read-Only (can’t update or delete);
Bit 1 – Hidden (H), hidden file;
Bit 2 – System (Sys), system file;
Bit 3 – Volume label;
Bit 4 – folder attribute (Directory Entry);
Bit 5 – Archive (A), file was not archived.
0Ch–15h 10 Reserved.
16h 2 Last changed (created) time:
Bit 0-4 – pairs of seconds (0-29),
Bit 5-10 – minutes (0-59),
Bit 11-15 – hours (0-23).
18h 2 Last changed (created) date:
Bit 0-4 – day (0-31),
Bit 5-8 – month (1-12),
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