Making just 1 USB partition bootable

medwatt

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Hello,
I've been trying to create a bootable Win7 for my notebook using my 320GB external hard drive. The problem is I have other files in there too. I made a small (10GB) partition in the 320GB HD and formatted in FAT32. The problem is all the available software around that automate the Win7-USB process format the entire hard drive and not just that 10GB partition which I specified.
I wonder if there is a way to use just the 10GB partition.
Thanks
 

My Computer

Computer type
Laptop
Computer Manufacturer/Model Number
Lenovo
OS
Windows 6 Ultimate x64
CPU
i5-2450
Memory
6GB
Graphics Card(s)
Nvidia Cuda
Not sure I follow all of that, but I don't think Windows will boot from an external drive.
 

My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
Ignatz Special; 4 speed manual gearbox; factory air conditioning; one of one
OS
Windows 7 Home Premium SP1, 64-bit
CPU
Intel Skylake i5-6600K, not overclocked
Motherboard
AsRock Z170M Extreme 4, micro ATX
Memory
8 GB HyperX DDR4-2666 (2 x 4 GB)
Graphics Card(s)
none; graphics are integrated on CPU
Sound Card
onboard: Realtek ALC1150; external: USB Behringer UF0-202
Monitor(s) Displays
Dell S2340M 23 inch IPS
Screen Resolution
1600 x 900
Hard Drives
System: Crucial MX100 series SSD, 128 GB;
Data: Samsung Spinpoint 103SJ, 1 TB;
Backup: WD Caviar Green WD30EZRX-00D8PB0, 3 TB
PSU
Rosewill SilentNight 500 watt fanless, semi-modular
Case
Antec Solo II
Cooling
Noctua NH-U12S; Noctua F12 intake, Noctua S12A exhaust
Keyboard
Microsoft 200 6JH-00001 USB
Mouse
Dell or Microsoft optical wired; USB
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Microsoft Security Essentials and Malwarebytes Premium
Browser
Pale Moon
Other Info
All fans PWM; speeds at idle: CPU circa 500 rpm; intake circa 600 rpm; exhaust circa 600 rpm; CPU temps 27 idle and 47 C load in a warm room (27 C/81 F) when running Intel Extreme Tuning Utility stress test.
No. I meant creating a Win7 USB bootable disk. All I am asking is given that I have a large USB drive, is it possible to partition that USB drive such that I can put the Win7 installation files in that partition and keep the other partition unformatted ?
 

My Computer

Computer type
Laptop
Computer Manufacturer/Model Number
Lenovo
OS
Windows 6 Ultimate x64
CPU
i5-2450
Memory
6GB
Graphics Card(s)
Nvidia Cuda
No. I meant creating a Win7 USB bootable disk. All I am asking is given that I have a large USB drive, is it possible to partition that USB drive such that I can put the Win7 installation files in that partition and keep the other partition unformatted ?

I've never owned an external drive. I'd assume they can be partitioned and formatted like any other. And that you could then copy whatever files you wanted to that partition.

BUT, I'm not sure you could then install Windows FROM an external USB hard drive TO an internal, although I know you can from a USB flash drive. I took a quick glance at Google and couldn't find confirmation that you can install from USB external hard drive. What I saw implied you couldn't.
 

My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
Ignatz Special; 4 speed manual gearbox; factory air conditioning; one of one
OS
Windows 7 Home Premium SP1, 64-bit
CPU
Intel Skylake i5-6600K, not overclocked
Motherboard
AsRock Z170M Extreme 4, micro ATX
Memory
8 GB HyperX DDR4-2666 (2 x 4 GB)
Graphics Card(s)
none; graphics are integrated on CPU
Sound Card
onboard: Realtek ALC1150; external: USB Behringer UF0-202
Monitor(s) Displays
Dell S2340M 23 inch IPS
Screen Resolution
1600 x 900
Hard Drives
System: Crucial MX100 series SSD, 128 GB;
Data: Samsung Spinpoint 103SJ, 1 TB;
Backup: WD Caviar Green WD30EZRX-00D8PB0, 3 TB
PSU
Rosewill SilentNight 500 watt fanless, semi-modular
Case
Antec Solo II
Cooling
Noctua NH-U12S; Noctua F12 intake, Noctua S12A exhaust
Keyboard
Microsoft 200 6JH-00001 USB
Mouse
Dell or Microsoft optical wired; USB
Antivirus
Microsoft Security Essentials and Malwarebytes Premium
Browser
Pale Moon
Other Info
All fans PWM; speeds at idle: CPU circa 500 rpm; intake circa 600 rpm; exhaust circa 600 rpm; CPU temps 27 idle and 47 C load in a warm room (27 C/81 F) when running Intel Extreme Tuning Utility stress test.
I've already done it before using Win2Flash using my 320GB external HD. I've already stated the problem which I'm trying to avoid. When I use Win2Flash it formats my entire 320GB external HD. Now, I have files in it. So what I'm asking is how to avoid formatting the entire external HD.
 

My Computer

Computer type
Laptop
Computer Manufacturer/Model Number
Lenovo
OS
Windows 6 Ultimate x64
CPU
i5-2450
Memory
6GB
Graphics Card(s)
Nvidia Cuda
Have you tried Diskpart? I'm guessing it will see externals.
 

My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
Ignatz Special; 4 speed manual gearbox; factory air conditioning; one of one
OS
Windows 7 Home Premium SP1, 64-bit
CPU
Intel Skylake i5-6600K, not overclocked
Motherboard
AsRock Z170M Extreme 4, micro ATX
Memory
8 GB HyperX DDR4-2666 (2 x 4 GB)
Graphics Card(s)
none; graphics are integrated on CPU
Sound Card
onboard: Realtek ALC1150; external: USB Behringer UF0-202
Monitor(s) Displays
Dell S2340M 23 inch IPS
Screen Resolution
1600 x 900
Hard Drives
System: Crucial MX100 series SSD, 128 GB;
Data: Samsung Spinpoint 103SJ, 1 TB;
Backup: WD Caviar Green WD30EZRX-00D8PB0, 3 TB
PSU
Rosewill SilentNight 500 watt fanless, semi-modular
Case
Antec Solo II
Cooling
Noctua NH-U12S; Noctua F12 intake, Noctua S12A exhaust
Keyboard
Microsoft 200 6JH-00001 USB
Mouse
Dell or Microsoft optical wired; USB
Antivirus
Microsoft Security Essentials and Malwarebytes Premium
Browser
Pale Moon
Other Info
All fans PWM; speeds at idle: CPU circa 500 rpm; intake circa 600 rpm; exhaust circa 600 rpm; CPU temps 27 idle and 47 C load in a warm room (27 C/81 F) when running Intel Extreme Tuning Utility stress test.
Sure. You can use any decent partitioning program. Free Partition Manager - AOMEI Partition Assistant Standard


There is a peculiar windows limitation for usb - you can only see one partition on a usb stick. If you want to see the other one instead, you have to mark it active. ( Linux doesn't have that limitation ).

Another option for usb stick is to keep your existing partition intact, ( with all your files on it ), make sure it has the nt6 bootsector code and mbr code ( easily done with bootice ).

View attachment bootice.zip

If you have an external HD you are already using, create another partition with Aomei or bootice, then just extract the installation media onto it.

If you want to use it as a recovery partition , similar to oems , simply register it with reagentc command.
 

My Computers

System One System Two

  • Computer type
    PC/Desktop
    OS
    7 X64
    CPU
    i5 8400
    Motherboard
    gigabyte b365m ds3h
    Memory
    2x8gb 3200mhz
    Hard Drives
    various
    PSU
    pure power 11 400w cm
    Case
    Coolermaster
    Cooling
    cryorig m9i
  • Computer type
    PC/Desktop
    OS
    7x64
    CPU
    g5400
    Motherboard
    ga b365m ds3h
    Memory
    8gb ddr4 2400
    PSU
    xfx pro 450w
I already know how to partition a hard drive. The question I am asking here is how to put the contents of the Win7 installation disk in just one partition of an external hard drive. All the software that are available for automating the process will format the partition by default and for some reason the entire hard drive. I don't know why it does so. Thats what I am asking and how to avoid that ?
 

My Computer

Computer type
Laptop
Computer Manufacturer/Model Number
Lenovo
OS
Windows 6 Ultimate x64
CPU
i5-2450
Memory
6GB
Graphics Card(s)
Nvidia Cuda
How about letting your app format the whole drive and put your files on it. Then shrink the partition and make a second partition out of the "unallocated space". Most partitioning programs can shrink partitions as needed on an internal drive. Not sure if they can do that on an external.
 

My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
Ignatz Special; 4 speed manual gearbox; factory air conditioning; one of one
OS
Windows 7 Home Premium SP1, 64-bit
CPU
Intel Skylake i5-6600K, not overclocked
Motherboard
AsRock Z170M Extreme 4, micro ATX
Memory
8 GB HyperX DDR4-2666 (2 x 4 GB)
Graphics Card(s)
none; graphics are integrated on CPU
Sound Card
onboard: Realtek ALC1150; external: USB Behringer UF0-202
Monitor(s) Displays
Dell S2340M 23 inch IPS
Screen Resolution
1600 x 900
Hard Drives
System: Crucial MX100 series SSD, 128 GB;
Data: Samsung Spinpoint 103SJ, 1 TB;
Backup: WD Caviar Green WD30EZRX-00D8PB0, 3 TB
PSU
Rosewill SilentNight 500 watt fanless, semi-modular
Case
Antec Solo II
Cooling
Noctua NH-U12S; Noctua F12 intake, Noctua S12A exhaust
Keyboard
Microsoft 200 6JH-00001 USB
Mouse
Dell or Microsoft optical wired; USB
Antivirus
Microsoft Security Essentials and Malwarebytes Premium
Browser
Pale Moon
Other Info
All fans PWM; speeds at idle: CPU circa 500 rpm; intake circa 600 rpm; exhaust circa 600 rpm; CPU temps 27 idle and 47 C load in a warm room (27 C/81 F) when running Intel Extreme Tuning Utility stress test.
Yep, just add what you want to the external drive after you put the iso files on it.
 
Last edited:

My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
Skylake Special #666
OS
Windows 10 Pro x64
CPU
Intel Core i7 6700K
Motherboard
Asus Sabertooth Z170 Mark 1
Memory
GSkill TridentZ RGB 16GB 3600 16-16-16-36
Graphics Card(s)
EVGA GTX 980 Ti SC x2
Sound Card
Realtek High Definition
Monitor(s) Displays
AOC G2460PG
Screen Resolution
1920 x 1080 144Hz
Hard Drives
Samsung 860 Pro 256GB, Seagate Barracuda 4TB x2
PSU
EVGA 1000 P2, EVGA White Custom Braided Cables
Case
Corsair Vengeance C70 Gunmetal Black
Cooling
Corsair H100i v2, Corsair ML120 x2, Thermal Grizzly Kryonaut
Keyboard
Logitech G910 Orion Spectrum
Mouse
Logitech G700s
Internet Speed
Verizon Fios Quantum Gateway 75/75
Antivirus
Windows Defender, Malwarebytes Free 3.8.3
Browser
Chrome
Other Info
Corsair SP120 x4, LG Blu-ray Drive, Durabrand HT-395 100 Watt Dolby Digital Amp, Corsair H2100 Wireless 7.1 Headset
How about letting your app format the whole drive and put your files on it. Then shrink the partition and make a second partition out of the "unallocated space". Most partitioning programs can shrink partitions as needed on an internal drive. Not sure if they can do that on an external.

Quite extraordinarily if I format the partition myself it doesn't boot up in bios even when I set it active. So I was finally able to create a Win7 bootable external hard disk. Here's how I did it in case someone cares:
1. My external HD was formatted in NTFS.
2. Using cmd, I made the external HD active
3. Copied Win7 installation files onto the external HD
4. Wrote the bootsector with bootsect.exe
5. Tested the external HD to see whether it was bootable (it was)
6. Using windows disk management utility, i created two partitions on the HD; one just 5GB and the second the rest of the HD space. After that the first partition contained the installation files while the other was empty and I recopied all my files there.
7. Tested the external HD to see if it still boots. It did.

So in conclusion I now own an external HD which contains two partitions; one for installing Win7 and the other containing all my files.

Thanks
 

My Computer

Computer type
Laptop
Computer Manufacturer/Model Number
Lenovo
OS
Windows 6 Ultimate x64
CPU
i5-2450
Memory
6GB
Graphics Card(s)
Nvidia Cuda
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