Partition Record Technical Details 
Different operating systems have different Partition Type bytes. The most common DOS partition type is 6h, which is used for Primary DOS partitions greater than 32 Mbytes.

Here is a list of known (and suspected) partition type bytes: 

00 Not Occupied 
01 DOS, Primary Partition (12-bit FAT, <16MB) 
02 XENIX root 
03 XENIX usr 
04 DOS, Primary Partition (16-bit FAT, >=16MB and <32MB) 
05 DOS, Extended Partition 
06 DOS, Primary Partition (16-bit FAT, >32MB) 
07 OS/2 HPFS, Win NTFS, QNX ver 2, or Adv UNIX 
08 AIX - boot 
09 AIX - data, Coherent 
0A OS/2 BtMgr 
0B PRI DOS 512 Mbytes - 2 Tbytes FAT32 Win95, OSR2 & 98 
0C EXT DOS 512 Mbytes - 2 Tbytes FAT32 Win95, OSR2 & 98 
0E PRI DOS 32 Mbytes-2 Gbytes FAT16 Windows 95 & 98 
0F EXT DOS 0-2 Gbytes Windows 95 & 98 
10 OPUS 
12 Compaq diagnostics partition 
40 VENIX 80286 
50 DiscWizard Starter Edition read only DOS partition 
51 DiscWizard Starter Edition read/write DOS partition 
52 CPM, Microport System V/386 
54 DiscWizard Starter Edition non-DOS partition 
55 Micro House EZ-DriveŽ non-DOS partition 
56 Golden Bow Vfeature partition 
61 Storage Dimensions SpeedStor partition 
63 UNIX - AT&T System V/386 
64 Novell NetWare 286 
65 Novell NetWare 386 
75 PC/IX IBM 
77 QNX POSIX partition 
78 QNX POSIX partition (secondary) 
79 QNX POSIX partition (secondary) 
80 Minix (v1.4a and earlier) 
81 Minix (v1.4b and later), Linux 
82 Linux swap partition 
83 Linux native file system 
93 Amoeba file system 
94 Amoeba bad block table? 
DB Digital Research CPM-86, Concurrent DOS 
E1 SpeedStor 12-bit FAT extended partition 
E3 DOS read-only 
E4 SpeedStor 16-bit FAT extended partition 
F2 2nd DOS partition?, some OEM customized DOS 
F4 SpeedStor, large partitions 
FE Lan Step, SpeedStor (partitions over 1024 cyl?) 
FF UNIX bad block table partition