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Windows 7: Booting from external hard drive


05 Mar 2012   #1

Windows 7 Ultimate x64
 
 
Booting from external hard drive

Motherboard: Asus A8N5X

So after the hard drive fiasco that I reported in another thread, I got clever and decided to create an "Emergency Boot Drive" that would have Windows on it as well as some utilities for data recovery.

I took one of the many old hard drives that I have floating around and plugged it into the compter AND unplugged my other two drives. Then I ran Windows Install off the DVD and installed Windows to the old drive. I installed my software. All was good. I plugged in the other two drives and tried to boot from the "Emergency" drive and it worked fine.

Last step was to unplug the emergency drive from the motherboard, connect it via USB and try to boot. The BIOS sees the drive and I tell it to boot from the drive.

So the computer is booting. The "Starting Windows" message comes up and then the system reboots. This happens everytime I try it.

Any ideas of what it happening here? Does Windows reset the USB ports so that the drive suddenly vanishes?

Thanks.


My System SpecsSystem Spec
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05 Mar 2012   #2

win 7 ultimate32bit, Win8.1pro wmc 32bit
 
 

Hi BarnabasSackett, As far as I am aware ,you cannot boot a windows OS from an external USB drive . It is possible to boot from a usb pendrive though
My System SpecsSystem Spec
05 Mar 2012   #3

Windows 7 Professional x64 Linux Mint 16
 
 

Quote   Quote: Originally Posted by pebbly View Post
Hi BarnabasSackett, As far as I am aware ,you cannot boot a windows OS from an external USB drive . It is possible to boot from a usb pendrive though

Ya booting from a flash drive is incredible. From start to desktop in 15 minutes.
My System SpecsSystem Spec
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05 Mar 2012   #4

Windows 7 Ultimate x64
 
 

I sense some sarcasm here.
My System SpecsSystem Spec
05 Mar 2012   #5

Windows 7 Ultimate SP1 64-Bit
 
 

Quote   Quote: Originally Posted by BarnabasSackett View Post
I sense some sarcasm here.
Possibly, but the fact is you can't boot Windows 7 from an external USB drive and even if you could the process would be far too slow.

http://windows.microsoft.com/en-US/w...ling-Windows-7
My System SpecsSystem Spec
05 Mar 2012   #6

Windows 7 Ultimate x64
 
 

Speed isn't an issue. This is for emergencies.

However, why is it that Windows won't boot from an external USB drive? I get the "Starting Windows" message. Does Windows do something strange that won't work across a USB port?
My System SpecsSystem Spec
05 Mar 2012   #7

Microsoft Community Contributor Award Recipient

Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
 
 

USB drivers should be loaded just after starting windows. that's the problem.
change this in registry

Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\usbccgp]
"Start"=dword:00000000
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\usbehci]
"Start"=dword:00000000
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\usbhub]
"Start"=dword:00000000
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\usbohci]
"Start"=dword:00000000
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\USBSTOR]
"Start"=dword:00000000
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\usbuhci]
"Start"=dword:00000000
My System SpecsSystem Spec
05 Mar 2012   #8

Microsoft Community Contributor Award Recipient

Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
 
 

My System SpecsSystem Spec
05 Mar 2012   #9

Windows 7 Professional x64 Linux Mint 16
 
 

Quote   Quote: Originally Posted by BarnabasSackett View Post
I sense some sarcasm here.
Where ? I was serious and so was Pebbly.
My System SpecsSystem Spec
05 Mar 2012   #10
Microsoft MVP

 

The modern method to back up your Windows 7 is to save to another HD or external a Windows 7 backup image, so that if it becomes irreparable you can reimage the HD or its replacement in 20 minutes.

If you keep your data on a separate partition (linked to a Library - Include a Folder - Windows 7 Forums)
then you'll have you current data set in place and waiting for the reimaged OS/Programs.

The only way to keep backup more current and together is mirror the HD in a RAID which is complicated and has issues of its own.
My System SpecsSystem Spec
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 Booting from external hard drive




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