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Dual Boot - NT4 and redhat 7

These instructions will also work for redhat 6.X - though there may be some minor differences in the screens.
This should also work for Windows 2000 - though I haven't tested it personally.

This example assumes you are running NT4 with the NTFS file system with minimum of 3 gig free for your redhat installation.

1. Start with a installation of NT workstation or server.

2. Make sure you have the 3 NT floppies you were prompted to make while performing the Windows NT installation.

3. Make sure you have a newly created NT repair disk in case all should go wrong.  To make or update your repair disk:

4. (In NT) Click Start | Run | Type "Rdisk" | Click Go

5. When the applet starts, select Create Repair Disk.

6. Now format another floppy disk for DOS (FAT). Put the floppies aside for now.

OK, Let's begin.

7. Reboot with redhat 7 CD in the drive.

8. Press enter to install in graphic mode.

9. Choose English - next

10. Choose a keyboard, us english w/ISO9995-3, disable dead keys - next

11. Choose mouse - next

12. You'll get a Welcome screen - next

13. Choose Custom Install - next

14. Set partitions - choose manual w/ Disk Druid - next

15. You will see your NT partitions listed as <not set> NTFS/HPFS - LEAVE THESE ALONE

16. Choose "add" to add your Linux partitions.  You will need a minimum of 3: /boot, /, and <swap>. You may add more if you wish.  As I choose to keep lots of stuff in the /home directory, I have made it a separate partition. My partitions look like this for a 20 gig drive:
Mount Point 
Requested Size
Actual space taken
<not set>
<not set>
<not set>
Linux Native
Linux Native
Linux Swap
Linux Native

17. If you're working with 3 gigs, use 50 meg or less for /boot, half the abount of RAM you have (up to 128 meg space on the drive) for and the remainder for /.

18. You may want to make sure you've used 100% of the drive. (Indicated in the lower right)  You don't want to be wasteful.

19. MAKE SURE to note the location of the /boot and / partitions.  In this case /dev/hda7 for /boot and /dev/hda8 for /.  - Next

20. Choose the partitions to format (Choose all boxes - there should only be the Linux partitions listed and no swap) - next

21. Check these boxes:
Create boot disk
Install lilo to /dev/hda7 (hda7 is the /boot in my example, yours may be different) First sector of boot partition.
Partition /dev/hda8 (again, hda8 is my / partition in this example)
check default boot image
boot label Linux
In the box, there will be: <check> /dev/hda8 Linux Native Linux

22. Click next

23. Set time zone - next

24. Set root password - enter the password twice

25. Create an account (The root account should NOT be used for normal access to the system.)
<your account name> password password  (full account name) - Click add

26. Enter more accts. if you wish - next

27. Authentication - Check MD5 and Shadow - leave the rest blank  - next

28. Packages - scroll to bottom, check "everything" - next

29. Choose monitor & sync rates - default settings usually work - next

30. Choose graphic card, amount of video memory, then test.  Hopefully you'll see the test and click OK

31. Choose graphical logon - choose custom config - choose Gnome click next

32. Choose resolution - DON'T set the bits or resolution too high! One step lower than you'd choose in windows is good for a starter - next

33. About to install - next

34. Linux will format, then install disk 1 and ask for disk 2,  then finish

35. Create boot disk on a new floppy, click next

36. Remove CD - leave floppy in

37. Reboot

38. redhat will come up.

39. Log on to redhat as root. Open a terminal window.

40. Time to grab the bootsector from your Linux boot partition (/boot). With /dev/hda7 as your /boot, the dd command is:

# dd if=/dev/hda7 of=/bootsect.lnx bs=512 count=1

41. The bootsect.lnx should be 512 bytes.

42. Remove Linux boot disk - Install a DOS formatted floppy

43. Now copy the file bootsect.lnx to the floppy.

44. You can copy it with:

# mcopy /bootsect.lnx a:

45. Remove floppy

46. Log out and Reboot

47. NT should come up - log on

48. Insert DOS floppy

49. From a command prompt (or any way you want) # copy a:\bootsect.lnx c:

50. Now, go to:

Start | Programs | Windows NT Explorer

51. Navigate to C:\boot.ini

52. Right click on boot.ini, left click properties

53. Uncheck Read-only | Click OK

54. Open boot.ini in notepad

55. Add the line: c:\bootsect.lnx="redhat 7" to the OS Loader.  It should look like this:

     [boot loader]
     [operating systems]
     multi(0)disk(0)rdisk(0)partition(1)\WINNT="Windows NT Workstation ...
     multi(0)disk(0)rdisk(0)partition(1)\WINNT="Windows NT Workstation ...
     C:\bootsect.lnx="redhat 7"

56. Save the file in Notepad

57. Close Notepad

58. Navigate back to C:\boot.ini

59. Right click on boot.ini, left click properties

60. Check Read-only | Click OK

61. Remove floppy

62. Reboot

63. At the NT Boot Loader screen you should see

Windows NT Workstation Version 4.0
Windows NT Workstation Version 4.0 [VGA mode]
redhat 7

64. Choose redhat 7 and hit enter

65. Linux should load.  You're done.

NOTE:  If you recompile the kernel, you will need to perform steps 40 through 49 (after the compile and running lilo) to get the new kernel to boot.

If you would prefer to dual boot using Red Hat's loader, take a look at Win2k / Red Hat 7.1 Dual Boot.