什麼是 LVM： PV, PE, VG, LV 的意義
 Figure 5: FAT32 Filesystem Overall Layout |
| 主啟動區 | 檔案 分配表#1 | 檔案 分配表#2 | 根目錄 | 其他所有資料... 剩下磁碟空間 |
| 偏移（位元組） | 長度（位元組） | 說明 | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0x00 | 3 | 跳轉指令（跳過開頭一段區域） | ||||||||||||||||
| 0x03 | 8 | OEM名稱（空格補齊）。MS-DOS檢查這個區域以確定使用啟動記錄中的哪一部份資料 [1] 。常見值是IBM 3.3（在「IBM」和「3.3」之間有兩個空格）和MSDOS5.0. | ||||||||||||||||
| 0x0b | 2 | 每個磁區的位元組數。基本輸入輸出系統參數塊從這裡開始。 | ||||||||||||||||
| 0x0d | 1 | 每叢集磁區數 | ||||||||||||||||
| 0x0e | 2 | 保留磁區數（包括啟動磁區） | ||||||||||||||||
| 0x10 | 1 | 檔案分配表數目 Number of FATs. The number of copies of the FAT on the volume. The value of this field is typically 2. | ||||||||||||||||
| 0x11 | 2 | 最大根目錄條目個數Root Entries. The total number of 32-byte file and folder name entries that can be stored in the root folder of the volume. On a typical hard disk, the value of this field is 512. One entry can be used as a volume label, and files and folders with long names use multiple entries per file. The largest number of file and folder entries is typically 511; however, if long file names are used, entries usually run out before you reach that number. | ||||||||||||||||
| 0x13 | 2 | 總磁區數（如果是0，就使用偏移0x20處的4位元組值） | ||||||||||||||||
| 0x15 | 1 | 介質描述
同樣的介質描述必須在重複複製到每份FAT的第一個位元組。有些作業系統（MSX-DOS 1.0版）全部忽略啟動磁區參數，而僅僅使用FAT的第一個位元組的介質描述確定檔案系統參數。
| ||||||||||||||||
| 0x16 | 2 | 每個檔案分配表的磁區（FAT16）Sectors Per FAT. The number of sectors occupied by each FAT on the volume. The computer uses this number and the number of FATs and reserved sectors to determine where the root directory begins. The computer can also determine where the user data area of the volume begins based on the number of entries in the root directory (512). | ||||||||||||||||
| 0x18 | 2 | 每磁軌的磁區Sectors Per Track. | ||||||||||||||||
| 0x1a | 2 | 磁頭數Number of Heads | ||||||||||||||||
| 0x1c | 4 | 隱藏磁區Hidden Sectors. The number of sectors on the volume before the boot sector. This value is used during the boot sequence to calculate the absolute offset to the root directory and data areas. | ||||||||||||||||
| 0x20 | 4 | 總磁區數（如果超過65535，參見偏移0x13）Large Sectors. | ||||||||||||||||
| (36)0x24 | 4 | 每個檔案分配表的磁區（FAT32）。擴充功能基本輸入輸出系統參數塊從這裡開始。Sectors per FAT. The size of the FAT in sectors. | ||||||||||||||||
| (36)0x24 | 1 | 物理驅動器個數（FAT16） | ||||||||||||||||
| (40)0x25 | 1 | 當前磁頭（FAT16） | ||||||||||||||||
| (42)0x26 | 1 | 簽名（FAT16） | ||||||||||||||||
| (44)0x27 | 4 | ID（FAT16） | ||||||||||||||||
| (40)0x28 | 2 | Flags（FAT32） | ||||||||||||||||
| (52)0x2a | 2 | 版本號（FAT32） | ||||||||||||||||
| (44)0x2c | 4 | 根目錄啟始叢集（FAT32）The cluster number of the root directory. Often this field is set to 2. | ||||||||||||||||
| 0x2b | 11 | 卷標（非FAT32） | ||||||||||||||||
| (48)0x30 | 2 | FSInfo扇區（FAT32）File System Information Sector Number (FAT32 only). The sector number of the File System Information (FSINFO) structure in the reserved area of the FAT32 volume. The value is typically 1. A copy of the FSINFO structure is kept in the Backup Boot Sector, but it is not kept up-to-date. | ||||||||||||||||
| (50)0x32 | 2 | 啟動扇區備份（FAT32）The cluster number of the backup boot sector. | ||||||||||||||||
| (52)0x34 | 12 | 保留未使用（FAT32） | ||||||||||||||||
| 0x36 | 8 | FAT檔案系統型別（如FAT、FAT12、FAT16） | ||||||||||||||||
| 0x3e | 2 | 作業系統自引導程式碼 | ||||||||||||||||
| (64)0x40 | 1 | BIOS設備代號（FAT32）Physical Drive Number. | ||||||||||||||||
| (65)0x41 | 1 | 未使用（FAT32） | ||||||||||||||||
| (66)0x42 | 1 | 標記（FAT32）Extended Boot Signature. A field that must have the value 0x28 or 0x29 to be recognized by Windows Server 2003. | ||||||||||||||||
| (67)0x43 | 4 | 卷序號（FAT32）Volume Serial Number. A random serial number that is created when a volume is formatted and that helps to distinguish between disks. | ||||||||||||||||
| (71)0x47 | 11 | 卷標（FAT32）Volume Label. A field that was once used to store the volume label. The volume label is now stored as a special file in the root directory. | ||||||||||||||||
| (82)0x52 | 8 | FAT檔案系統型別（FAT32）System ID. A text field with a value of FAT32. | ||||||||||||||||
| (510)0x1FE | 2 | 磁區結束符（0x55 0xAA） |
| Volume Size | FAT16 Cluster Size | FAT32 Cluster Size |
|---|---|---|
7 megabytes (MB)–16 MB
|
2 KB
|
Not supported
|
17 MB–32 MB
|
512 bytes
|
Not supported
|
33 MB–64 MB
|
1 KB
|
512 bytes
|
65 MB–128 MB
|
2 KB
|
1 KB
|
129 MB–256 MB
|
4 KB
|
2 KB
|
257 MB–512 MB
|
8 KB
|
4 KB
|
513 MB–1,024 MB
|
16 KB
|
4 KB
|
1,025 MB–2 gigabytes (GB)
|
32 KB
|
4 KB
|
2 GB–4 GB
|
64 KB
|
4 KB
|
4 GB–8 GB
|
Not supported
|
4 KB
|
8 GB–16 GB
|
Not supported
|
8 KB
|
16 GB–32 GB
|
Not supported
|
16 KB
|
32 GB–2 terabytes
|
Not supported
|
Not supported
|
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