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Windows 7: Can't boot if USB external drive attached

04 Nov 2010   #11

Win 8 Release candidate 8400

Quote   Quote: Originally Posted by dancedar View Post
Would have to check tomorrow - any specific hardware you'd need - assume ram and monitor make aren't important
Probably not but the more you can give us the better. It is a 64 bit OS so it should but...


My System SpecsSystem Spec
04 Nov 2010   #12
Layback Bear

Windows 7 Pro. 64/SP-1

To the OP. Please fill out you specs in lower left of one of your post. Giving a little piece of specs now and then will make it very hard for these people to help you.
My System SpecsSystem Spec
04 Nov 2010   #13

W7 Professional x64

Quote   Quote: Originally Posted by original post date
Take a look at the OP date. (not those that are helping dancedar)
My System SpecsSystem Spec

04 Nov 2010   #14

Windows 7 Home Premium 64bit

Sorry - I'm not the OP so I'll try to flesh out my post a little:

Not my pc, so specs on Sat if I can -
Win XP Home 32 bit, about 6 yrs old, fairly well spec'd pc then as for photo work, all drives connected via back usb (no hubs) stripped everything else off to id the problem, single drive attached via usb 2 - drive is an external 1tb seagate freeagent w/ separate power supply, freshly formatted (not sure ntfs or fat/32).

Will try to post more info but no other drives stop pc from booting (though no drives are 1tb in size) and this same problematic drive allows a laptop to boot but not a desktop.
My System SpecsSystem Spec
04 Nov 2010   #15
Layback Bear

Windows 7 Pro. 64/SP-1

Thank you LiquidSnak. I missed that.
My System SpecsSystem Spec
04 Nov 2010   #16

Microsoft Community Contributor Award Recipient

Windows 7 Ultimate 64

My system will do the same thing when I forget to unplug my Freeagent Go drive from my desktop system. As it is always plugged in front it's no big deal to unplug and restart. I've changed my bios settings and it still will trip up the booting for some reason? I understand this doesn't help.
My System SpecsSystem Spec
26 Aug 2011   #17

Windows 7 Home Premium 64bit

I have the same problem and can't really find a solution yet.
My System SpecsSystem Spec
26 Aug 2011   #18

Microsoft Windows 7 Home Premium 64-bit 7600

this used to happen on my old pc , i had vista installed and the external worked fine at boot etc, then i upgraded to 7 and the pc wouldnt boot unless the external was switched off, fortunately it had a power switch. anyway when i got a new pc with 7 pre installed and it was fine again no problems at boot. i know this is irrelevant just thought i would say anyway.
My System SpecsSystem Spec
15 Sep 2011   #19

windows 7 64bit
Asus Crosshair II formula mother board

Windows 7 64bit, Asus Crosshair II formula mother board.
I have exactly same issue. With Western D Mybook, 1T attached to my computer, the computer fails to boot and freezes at the first page.
What I noticed tho, if I went to bios setting (hitting Del), then quit from it, the computer will boot successfully with this USB drive.
I've tried many things: Change priority of the boot device, enable or disable the USB legacy. This external hard drive won't freeze my another DELL computer, running Win7 64bit.

I am trying to update the BIOS, and hope it will help. Or if you guys have any suggestion, please let me know.
My System SpecsSystem Spec
17 Jan 2012   #20

Windows 7 - 64bit
A work around

I had this same issue and struggled with it for days with no solutions... I tried changing the boot order, I tried to disable USB legacy support in my BIOS (which not only didn't fix the problem, but prevented Windows from loading even when I removed the expansion drive), and looked for updates for my BIOS (there weren't any).

As a last ditch effort, I went into the partition manager (the crappy one that comes with Windows 7) and turned my 2TB drive into four 500GB partitions. Problem solved. It boots fine.

Hope this helps the next victim of this problem...
My System SpecsSystem Spec

 Can't boot if USB external drive attached

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