Dual-Boot Windows 7 64-bit and 32-bit

taberski

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I have a workstation that I am configuring for dual-boot of both Window 7 64-bit and Windows 7 32-bit.

I believe I'm almost done, but I have a few (hopefully) minor changes that I would like to make using BCDedit - perhaps someone could help me.

A bit of background may speed this up a bit.

I have a Dell T7500 Workstation that I had pre-ordered with 2 500GB HDDs configured as Raid 1 with Windows 7 Ultimate 64-bit installed. I knew that I would run into some issues with the 64-bit OS, so I wanted to install the 32-bit version of Windows 7 before I got too far into setting up this PC - to avoid having to reload a whole bunch of applications.

So, I purchased 2 1TB HDDs and and additional copy of Windows 7 Ultimate. I installed the new drives and configured them as Raid 1. So I now have 2 virtual drives, one 500GB and the other 1TB.

I booted from the new DVD and installed Windows 7 Ultimate 32-bit to the new drive. When I rebooted, I got 2 "Windows 7" operating systems. After poking around a bit and trying my hand at BCDedit, I now get "Windows 7 32-bit" followed by "Windows 7 64-bit" - the OSes are in the reverse order of what I expected.

So I have 2 questions:

  1. It appears that {default} determines which OS gets highlighted and therefore boots by "default" if a user does not intervene. Is there a way to switch which entry is assigned {default} and {current} - or some other method so that the 64-bit OS boots by default?
  2. When I boot the 32-bit OS, it is on C: and the 64-bit drive is on D:. When I boot the 64-bit OS it is on C: - which I expected based on the forums, etc. - but the 32-bit drive is on E:, not D: as I expected - the DVD is now assigned to D:. Is there a way to switch the second HDD and the DVD drive letters?
I searched the forums for dual-boot and BCDedit tutorials and managed to glean most of what I need. I realize that there are a plethora of alternate boot managers available, but I feel like I'm so close - I'd prefer to keep it simple.

Thank you,

Kevin Taberski
 
Last edited by a moderator:

My Computer My Computer

Computer Manufacturer/Model Number
Dell T7500
OS
Windows 7
CPU
Xeon X5550
Motherboard
Dell Precision
Memory
4GB 1333MHz ECC
Graphics Card(s)
nVidia FX1800
Sound Card
None
Monitor(s) Displays
2 Dell 2209WA
Hard Drives
2 Seagate Baracuda 500GB 7200RPM SATA Raid 1
2 Western Digital Caviar Black 1TB 7200RPM Sata Raid 1
Hello Kevin, Welcome to the best Windows forums out there!

To change the default OS, try this tutorial.

To change drive letters, go into Disk Management and right-click on your drive. Then select Change Drive Letters (or whatever the option is, you will see it).

Hope this helps,
~Jonathan
 

My Computer My Computer

Computer Manufacturer/Model Number
Custom
OS
Windows 7 Professional x64
CPU
Intel i7 2600K OC'd @ 4620 MHz
Motherboard
Asus P8Z68-V Pro
Memory
16GB GSkill Sniper 2133 Mhz (4x4GB)
Graphics Card(s)
EVGA GeForce GTX 480 SuperClocked+
Sound Card
Realtek High Definition Audio
Monitor(s) Displays
2x Acer S273HLbmii 27"
Screen Resolution
2 x 1920x1080
Hard Drives
64GB Crucial M4 SSD

Storage: Hitachi 1TB 5400RPM, Samsung 1.5TB 5400RPM
PSU
Corsair HW Series 750w (modular)
Case
Cooler Master HAF 932 Advanced Blue Edition
Cooling
CM Hyper 212+ CPU cooler, 3x 230mm + 1x 140mm case fans
Keyboard
Logitech MK320 (wireless)
Mouse
Logitech MK320 (wireless)
Internet Speed
30 Mb/s : 2 Mb/s
Jonathan,

Thank you for the link to the tutorial - that solved my 1st question!

If I attempt to change the drive letter of the second HDD, I find that D: is not available - which makes sense as D: is assigned to the DVD. I basically would like to swap D: with E: (i.e. the second HDD with the DVD). is it possible to assign an unused letter to the DVD? Then I could assign D: to my second HDD and then E: to the DVD.

I'm so close!

Thank you,

Kevin
 

My Computer My Computer

Computer Manufacturer/Model Number
Dell T7500
OS
Windows 7
CPU
Xeon X5550
Motherboard
Dell Precision
Memory
4GB 1333MHz ECC
Graphics Card(s)
nVidia FX1800
Sound Card
None
Monitor(s) Displays
2 Dell 2209WA
Hard Drives
2 Seagate Baracuda 500GB 7200RPM SATA Raid 1
2 Western Digital Caviar Black 1TB 7200RPM Sata Raid 1
Yes, you can do all kinds on monkeying with drive letters. If you change the DVD letter, you should be able to change the HD letter to D.
 

My Computer My Computer

Computer Manufacturer/Model Number
Custom
OS
Windows 7 Professional x64
CPU
Intel i7 2600K OC'd @ 4620 MHz
Motherboard
Asus P8Z68-V Pro
Memory
16GB GSkill Sniper 2133 Mhz (4x4GB)
Graphics Card(s)
EVGA GeForce GTX 480 SuperClocked+
Sound Card
Realtek High Definition Audio
Monitor(s) Displays
2x Acer S273HLbmii 27"
Screen Resolution
2 x 1920x1080
Hard Drives
64GB Crucial M4 SSD

Storage: Hitachi 1TB 5400RPM, Samsung 1.5TB 5400RPM
PSU
Corsair HW Series 750w (modular)
Case
Cooler Master HAF 932 Advanced Blue Edition
Cooling
CM Hyper 212+ CPU cooler, 3x 230mm + 1x 140mm case fans
Keyboard
Logitech MK320 (wireless)
Mouse
Logitech MK320 (wireless)
Internet Speed
30 Mb/s : 2 Mb/s
Hello taberski again another welcome to the Se7en Forums!

Changing the drive letters around in each installation is rather basic there. Make sure the 7 dvd or another disk with some data on it is left in the optical drive since that is one of the drives being changed. Once you go into the Disk Management tool and right click on the drive you can temporarily give it any unused drive letter like H, K, R, X and then proceed to make the other 7 Drive D.

Once done you simply go back to the optical drive once more to reassign E,F,G or whichever letter you want. Note that each time a drive letter is changed expect to see a Windows prompt cautioning about some programs no longer being able to work when asking if you want the change as well as seeing the autoplay popup appear.
 

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  • Computer type
    PC/Desktop
    Computer Manufacturer/Model Number
    Custom builds = 2
    OS
    W7 Ultimate x64/W10 Pro x64/W11 Pro Triple Boot - Main PC W7 Remote PC Micro ATX W7 Pro x64/W11 Pro
    CPU
    AMD Phenom II X4 975 Deneb 3.6ghz - 965 2nd remote pc
    Motherboard
    Gigabyte GA-790XTA-UD4-Gigabyte GA-880GM-D2H remote pc
    Memory
    Kingston Hyper X DDR3 1600 1.5v 16gb - Hyper X Fury 8gb 2nd
    Graphics Card(s)
    MSI HD Radeon 5750 1gb - MSI HD Radeon 6450 on mini tower
    Sound Card
    Creative Labs X-Fi Xtreme Audio P - Realtek onooard 2nd case
    Monitor(s) Displays
    ASUS VW199T-P 19" HP 2082a Main-HP 2082a 20" remote pc
    Screen Resolution
    Asus 1440x900 - HP 1600x900
    Hard Drives
    WD Black 1TB HD per OS W7, W10, and pending W11 presently on 500gb OS Drive - Pending Triple 1TB HDs for Spanned Storage/backup volume
    Single 2TB external USB enclosure, single 1TB System 7 Host/Boot drive, Pending 8TB external HD for system image b
    PSU
    Corsair 750TX - primary / Corsair CX600 - second
    Case
    Antec 900-2 - SSD compatible / NZXT Vulcan mini tower
    Cooling
    Zalman CNPS9900A
    Keyboard
    AZIO L70 Backlit Letters Gaming - ONN Cordless/USB
    Mouse
    MSI DS200 Programmable, Logitech Cordless
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    30mbps upgrade - primary hard wired - mini tower usb WiFi
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    GFI VIPRE Internet Security 2014 on W7 2016 beta on W10,
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    Cyberfox, WaterFox 64bit FF variants, FireFox x64, Pale Moon
    Other Info
    Accomdata fan cooled usb 2.0 PIDE/Sata II, III external enclosure.
    Sambient usb/eSata PATA/Sata II, III external enclosure.
  • Computer type
    PC/Desktop
    System Manufacturer/Model Number
    CUSTOM ASSEMBLY
    OS
    W7 Pro x64/W11 Pro
    CPU
    AMD Deneb 3.6ghz - 965
    Motherboard
    Gigabyte GA-880GM-D2H remote pc
    Memory
    Kingston Hyper X Fury 8gb
    Graphics Card(s)
    MSI HD Radeon 6450 DVI Output
    Sound Card
    Realtek onooard Creative or Other separate PENDING
    Monitor(s) Displays
    VIZIO 32" LCD TV Separate LCD Pending
    Screen Resolution
    1600x1080
    Hard Drives
    WD 500GB OS Host/Boot WD Green 1TB Storage/Backup
    PSU
    Corsair 600W - THERMALTAKE 600W spare case
    Case
    NZXT Vulcan mini tower
    Cooling
    Twin 120mm Top Fans - 240mm Side Cover
    Keyboard
    ONN Cordless/USB Logitech Cordless
    Mouse
    ONN USB/Cordless - Logitech Cordless
    Internet Speed
    DSL 5G
    Browser
    MS Edge, FireFox, WaterFox x64, FireFox Nightly
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Jonathan and Night Hawk,

Thank you for the additional information. The step I was missing was having a disk inserted in the DVD drive. Once I performed that step, all was clear and straight forward.

I believe I now have my workstation configured just as I had intended - so I can now start installing applications with confidence.

Thanks again and Happy New Year!

Kevin
 
Last edited:

My Computer My Computer

Computer Manufacturer/Model Number
Dell T7500
OS
Windows 7
CPU
Xeon X5550
Motherboard
Dell Precision
Memory
4GB 1333MHz ECC
Graphics Card(s)
nVidia FX1800
Sound Card
None
Monitor(s) Displays
2 Dell 2209WA
Hard Drives
2 Seagate Baracuda 500GB 7200RPM SATA Raid 1
2 Western Digital Caviar Black 1TB 7200RPM Sata Raid 1
I'm glad to see you have sorted out now and a have great New Year! :D

(I've done that a few times where I went to change drive letters and forgot to have a disk in the drive. :o That's when you say aw crap and toss one in! :roflmao:)
 

My Computers My Computers

System One System Two

  • Computer type
    PC/Desktop
    Computer Manufacturer/Model Number
    Custom builds = 2
    OS
    W7 Ultimate x64/W10 Pro x64/W11 Pro Triple Boot - Main PC W7 Remote PC Micro ATX W7 Pro x64/W11 Pro
    CPU
    AMD Phenom II X4 975 Deneb 3.6ghz - 965 2nd remote pc
    Motherboard
    Gigabyte GA-790XTA-UD4-Gigabyte GA-880GM-D2H remote pc
    Memory
    Kingston Hyper X DDR3 1600 1.5v 16gb - Hyper X Fury 8gb 2nd
    Graphics Card(s)
    MSI HD Radeon 5750 1gb - MSI HD Radeon 6450 on mini tower
    Sound Card
    Creative Labs X-Fi Xtreme Audio P - Realtek onooard 2nd case
    Monitor(s) Displays
    ASUS VW199T-P 19" HP 2082a Main-HP 2082a 20" remote pc
    Screen Resolution
    Asus 1440x900 - HP 1600x900
    Hard Drives
    WD Black 1TB HD per OS W7, W10, and pending W11 presently on 500gb OS Drive - Pending Triple 1TB HDs for Spanned Storage/backup volume
    Single 2TB external USB enclosure, single 1TB System 7 Host/Boot drive, Pending 8TB external HD for system image b
    PSU
    Corsair 750TX - primary / Corsair CX600 - second
    Case
    Antec 900-2 - SSD compatible / NZXT Vulcan mini tower
    Cooling
    Zalman CNPS9900A
    Keyboard
    AZIO L70 Backlit Letters Gaming - ONN Cordless/USB
    Mouse
    MSI DS200 Programmable, Logitech Cordless
    Internet Speed
    30mbps upgrade - primary hard wired - mini tower usb WiFi
    Antivirus
    GFI VIPRE Internet Security 2014 on W7 2016 beta on W10,
    Browser
    Cyberfox, WaterFox 64bit FF variants, FireFox x64, Pale Moon
    Other Info
    Accomdata fan cooled usb 2.0 PIDE/Sata II, III external enclosure.
    Sambient usb/eSata PATA/Sata II, III external enclosure.
  • Computer type
    PC/Desktop
    System Manufacturer/Model Number
    CUSTOM ASSEMBLY
    OS
    W7 Pro x64/W11 Pro
    CPU
    AMD Deneb 3.6ghz - 965
    Motherboard
    Gigabyte GA-880GM-D2H remote pc
    Memory
    Kingston Hyper X Fury 8gb
    Graphics Card(s)
    MSI HD Radeon 6450 DVI Output
    Sound Card
    Realtek onooard Creative or Other separate PENDING
    Monitor(s) Displays
    VIZIO 32" LCD TV Separate LCD Pending
    Screen Resolution
    1600x1080
    Hard Drives
    WD 500GB OS Host/Boot WD Green 1TB Storage/Backup
    PSU
    Corsair 600W - THERMALTAKE 600W spare case
    Case
    NZXT Vulcan mini tower
    Cooling
    Twin 120mm Top Fans - 240mm Side Cover
    Keyboard
    ONN Cordless/USB Logitech Cordless
    Mouse
    ONN USB/Cordless - Logitech Cordless
    Internet Speed
    DSL 5G
    Browser
    MS Edge, FireFox, WaterFox x64, FireFox Nightly
    Other Info
    OS Testing-Remote Access to Main TeamViewer
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