By changing the value of one byte in the Partition table I am able to Select Windows NT from the OS/2 Boot Manager menu and have it boot. I am not knowledgable about Partition Tables and cannot say "why" or "how" this works. I picked this up from someone else and am just passing it on. The guy who told me this method called the Byte we are changing the "System" byte. * * * WARNING!!! * * * Editing the values in your hard disk partition table can have DISASTROUS consequences!! The first thing I did was to make a print screen of the current values before I even considered changing anything. This is how things looked before I made any changes. This report shows the partitions (excluding logical drives) on my 1st hard disk. Both 1 and 2 are Primary partitions. The drive letter "C" designation goes to whichever I am currently using, or the last one I used. This allows me to have DOS, NT and OS\2 selectable from the Boot Manager Menu. You can of course keep only one Primary partition and choose Dos or NT from the Flexboot menu. DOS FDISK REPORT: Boot manager is Active. NT WILL NOT boot. Display Partition Information Current fixed disk drive: 1 Partition Status Type Volume Label Mbytes System Usage 1 Non-DOS 63 32% C: 2 PRI DOS DRV-C 7M 7 FAT12 4% 3 EXT DOS 128 64% 4 A Non-DOS 1 1% Total disk space is 199 Mbytes (1 Mbyte = 1048576 bytes) The Extended DOS Partition contains Logical DOS Drives. Do you want to display the logical drive information (Y/N)......?[Y] NORTON 6.0 DISKEDIT: Partition table. Disk 1, Side 0, Cylinder 0, Sector 1 BOOT MANAGER IS ACTIVE. NT WILL NOT boot Object Edit Link View Info Tools Quit F1=Help Physical Sector: Cyl 0, Side 0, Sector 1 . 00000000: FA 33 C0 8E D0 BC 00 7C - 8B F4 50 07 50 1F FB FC .3.....|..P.P... 00000010: BF 00 06 B9 00 01 F2 A5 - EA 1D 06 00 00 BE BE 07 ................ 00000020: B3 04 80 3C 80 74 0E 80 - 3C 00 75 1C 83 C6 10 FE ...<.t..<.u..... 00000030: CB 75 EF CD 18 8B 14 8B - 4C 02 8B EE 83 C6 10 FE .u......L....... 00000040: CB 74 1A 80 3C 00 74 F4 - BE 8B 06 AC 3C 00 74 0B .t..<.t.....<.t. 00000050: 56 BB 07 00 B4 0E CD 10 - 5E EB F0 EB FE BF 05 00 V.......^....... 00000060: BB 00 7C B8 01 02 57 CD - 13 5F 73 0C 33 C0 CD 13 ..|...W.._s.3... 00000070: 4F 75 ED BE A3 06 EB D3 - BE C2 06 BF FE 7D 81 3D Ou...........}.= 00000080: 55 AA 75 C7 8B F5 EA 00 - 7C 00 00 49 6E 76 61 6C U.u.....|..Inval 00000090: 69 64 20 70 61 72 74 69 - 74 69 6F 6E 20 74 61 62 id partition tab 000000A0: 6C 65 00 45 72 72 6F 72 - 20 6C 6F 61 64 69 6E 67 le.Error loading 000000B0: 20 6F 70 65 72 61 74 69 - 6E 67 20 73 79 73 74 65 operating syste 000000C0: 6D 00 4D 69 73 73 69 6E - 67 20 6F 70 65 72 61 74 m.Missing operat . 000000D0: 69 6E 67 20 73 79 73 74 - 65 6D 00 00 00 00 00 00 ing system...... . 000000E0: 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................ . 000000F0: 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................ . 00000100: 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................ . 00000110: 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................ . 00000120: 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................ . 00000130: 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................ . 00000140: 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................ . 00000150: 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................ . 00000160: 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................ . 00000170: 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................ . 00000180: 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................ . 00000190: 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................ . 000001A0: 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................ . 000001B0: 00 00 00 00 00 00 00 00 - A6 03 78 51 00 00 00 01 ..........xQ.... . 000001C0: 01 00 16 0C 64 13 24 00 - 00 00 6C F8 01 00 00 00 ....d.$...l..... 000001D0: 41 14 06 0C 64 32 90 F8 - 01 00 AC 38 00 00 00 00 A...d2.....8.... 000001E0: 41 33 05 0C E4 62 3C 31 - 02 00 C0 FF 03 00 80 00 A3...b<1........ 000001F0: C1 63 0A 0C E4 67 FC 30 - 06 00 24 09 00 00 55 AA .c ..g.0..$..U. /\ / \ This is the value that I change to 00. Partition Table Cyl 0, Side 0, Sector 1 . Hard Disk 1 Offset 498, hex 1F2 . Press ALT or F10 to select menus . Disk Editor This is how things look AFTER making the change. DOS FDISK REPORT: Boot Manager is no longer seen by Dos or NT. It still works at Boot up and NT *WILL* now load. Display Partition Information Current fixed disk drive: 1 Partition Status Type Volume Label Mbytes System Usage 1 Non-DOS 63 32% C: 2 PRI DOS DRV-C 7M 7 FAT12 4% 3 EXT DOS 128 64% Total disk space is 199 Mbytes (1 Mbyte = 1048576 bytes) The Extended DOS Partition contains Logical DOS Drives. Do you want to display the logical drive information (Y/N)......?[Y] NORTON DISKEDIT: Partition table. Disk 1, side 0, Cylinder 0, Sector 1. Boot manager and NT both work. Object Edit Link View Info Tools Quit F1=Help 000000B0: 20 6F 70 65 72 61 74 69 - 6E 67 20 73 79 73 74 65 operating syste . 000000C0: 6D 00 4D 69 73 73 69 6E - 67 20 6F 70 65 72 61 74 m.Missing operat . 000000D0: 69 6E 67 20 73 79 73 74 - 65 6D 00 00 00 00 00 00 ing system...... . 000000E0: 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................ . 000000F0: 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................ . 00000100: 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................ . 00000110: 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................ . 00000120: 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................ . 00000130: 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................ 00000140: 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................ 00000150: 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................ 00000160: 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................ 00000170: 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................ 00000180: 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................ 00000190: 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................ 000001A0: 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................ 000001B0: 00 00 00 00 00 00 00 00 - A6 03 78 51 00 00 00 01 ..........xQ.... 000001C0: 01 00 16 0C 64 13 24 00 - 00 00 6C F8 01 00 00 00 ....d.$...l..... 000001D0: 41 14 06 0C 64 32 90 F8 - 01 00 AC 38 00 00 00 00 A...d2.....8.... 000001E0: 41 33 05 0C E4 62 3C 31 - 02 00 C0 FF 03 00 80 00 A3...b<1........ 000001F0: C1 63 00 0C E4 67 FC 30 - 06 00 24 09 00 00 55 AA .c...g.0..$..U. /\ / \ This value now 00. Partition Table Cyl 0, Side 0, Sector 1 . Hard Disk 1 Offset 498, hex 1F2 . Press ALT or F10 to select menus . Disk Editor Ok, that's it. This method works great for me but I picked this up from someone else. His disk configuration was different than mine and I DO NOT KNOW how to tell which values belong to which partition!! I compared his configuration to mine and found a close enough correlation between his Offset values and my own to make a GOOD GUESS about which line was the Boot Manager Partition. The tip off for me was the value "A0" in the third column. Feel free to compare these values with your own. I cannot overstate: *** WARNING!!!! *** Editing the values in your hard disk partition table can have DISASTROUS consequences!! The first thing I did was to make a print screen of the current values before I even considered changing anything. Running OS/2's FDISK and changing the Boot Manager back to Startable restores my configuration back to the way it was before I changed things. Take care. Brian Hinkle, Anaheim, CA.