MBR/BCD Recovery

Xeno Morph

Xeno Morph

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I have looked at some of the other posts, but I didn't find answers to my specific questions. I have an older pc with Win 7. I bought new hd to have dual boot XP/W7, and I made the mistake of installing XP without first unplugging Win 7 hd.:o:rolleyes: Now, of course my Win 7 MBR was over written by XP during installation. I was thinking of using "EasyBCD" utility to recover W7 MBR, instead of manually at the dos/cmd promt. My question is, after W7 MBR is recovered, will I be able to boot from either XP hd as well as W7 hd? Do I have to make any changes to the BIOS? The answer to this next question may be obvious, but just want to be sure.:confused: Do I disconnect XP hd during recovery, or leave it connected? Do I have to do anything to the XP hd MBR, or is that over written during the recovery process, (that is, assuming it is to be left connected)? Reinstalling W7 is not an option at the moment, since I have a lot of software that would need to be reinstalled. Finally, would it make a difference if W7 was 64bit OS, or is the process the same as recovering W7 32bit MBR. Don't remember if W7 is 32 or 64bit. Sorry about the barrage of questions. Just trying to cover all the bases. Thanks for any input or insight on this issue.

Baron
 

My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
CUSTOM BUILD
OS
Windows 7 Pro x64
CPU
AMD FX-8350 8-Core Black Edition, 4gHz, 125W
Motherboard
ASUS M5A99X EVO, AMD 990X/SB950 Chipset, UEFI BIOS, USB 3.0
Memory
CORSAIR: Vengence (2X8 GB) 16GB DDR3 1866mHz
Graphics Card(s)
NVIDIA: GeForce GTX 750 Ti, 1GB DDR5
Sound Card
Creative: Sound Blaster X-Fi Titanium
Monitor(s) Displays
NIXEUS 27"
Screen Resolution
2560 X 1440
Hard Drives
Seagate: SATA 2TB (internal)
Seagate: SATA 4TB (external)
PSU
NZXT HALE82 750W semi-modular
Case
NZXT PHANTOM, FANS 3x 200mm, 4x 120mm
Cooling
CORSAIR Hydro Series H80i High Performance Liquid CPU Cooler
Keyboard
AZIO (backlit keyboard)
Mouse
SENTEY Luminata Pro
Internet Speed
CABLE 100Mbps
Antivirus
ESET Smart Security
Browser
Firefox
Other Info
NZXT: APERTURE Card Reader w 2x USB 3,
NZXT: Custom Premium Cables
The first place you will now regret not having gone to first will be the guide for seeing a dual of 7 with the older version. http://www.sevenforums.com/tutorials/8057-dual-boot-installation-windows-7-xp.html

The Startup repair tool or command prompt repair commands are the two options available to restore the 7 mbr information since installing XP after 7 as the guide explains will require the rewrite of the 7 mbr entries. That is to be expected.

Once 7 is booting again you can easily add a new boot entry for XP into the 7 BCD store and then decide which version will be left as the default OS as well. If the XP boot files like boot.ini are already present on the 7 host drive XP should load right up. Otherwise you will need to copy the boot files over to the 7 drive and then proceed to edit the boot.ini itself.

Why? The boot.ini file will show "Windows XP rdisk(0)partition(1)" pointing at the second drive. One value would need to be changed to "rdisk(1)partition(1)" to point the ntldr at the second drive in order to see XP start up when selected. I assume however the XP files were already placed on the 7 host as well as the sight of the 7 mbr entries replaced by those for XP.

Read the guide over however since all these points are covered for you. Pay attention to the Option Two portion with XP installed after 7 which explains everything you need to do.
 

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
Thank you for the link, very informative.
 

My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
CUSTOM BUILD
OS
Windows 7 Pro x64
CPU
AMD FX-8350 8-Core Black Edition, 4gHz, 125W
Motherboard
ASUS M5A99X EVO, AMD 990X/SB950 Chipset, UEFI BIOS, USB 3.0
Memory
CORSAIR: Vengence (2X8 GB) 16GB DDR3 1866mHz
Graphics Card(s)
NVIDIA: GeForce GTX 750 Ti, 1GB DDR5
Sound Card
Creative: Sound Blaster X-Fi Titanium
Monitor(s) Displays
NIXEUS 27"
Screen Resolution
2560 X 1440
Hard Drives
Seagate: SATA 2TB (internal)
Seagate: SATA 4TB (external)
PSU
NZXT HALE82 750W semi-modular
Case
NZXT PHANTOM, FANS 3x 200mm, 4x 120mm
Cooling
CORSAIR Hydro Series H80i High Performance Liquid CPU Cooler
Keyboard
AZIO (backlit keyboard)
Mouse
SENTEY Luminata Pro
Internet Speed
CABLE 100Mbps
Antivirus
ESET Smart Security
Browser
Firefox
Other Info
NZXT: APERTURE Card Reader w 2x USB 3,
NZXT: Custom Premium Cables
I think you will find the tutorial section here in unbelievable when comparing how well the vast number of guides alone are compared to those found on the web! They are far better illustrated to start with! If you read through and follow the guide there you will up and running both in no time! :D
 

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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