You need to download the Windows AIK.
You then need to generate a bootable WinPE disk so see this topic in the
Walkthrough: Boot Windows PE from Hard Disk
You need a Windows Environment to be able to start setup from, just having
the disk bootable doesn't help for running setup With Windows Vista.
So you need to boot to WinPE to able to run setup.
That section tells you how to do this for either a bootable hard drive or a
bootable flash drive
This posting is provided "AS IS" with no warranties, and confers no rights
|> Thread-Topic: How to make a hard disk bootable?
|> thread-index: Ace1rFhG1uQCTj7oR1u/iWrDjy5xEA==
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|> From: =?Utf-8?B?UGFub3M=?= <Panos@discussions.microsoft.com>
|> References: <7C041BF6-EB03-4F06-9178-0C323856C301@microsoft.com>
|> Subject: Re: How to make a hard disk bootable?
|> Date: Sat, 23 Jun 2007 08:37:02 -0700
|> Lines: 21
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|> I do not want to do this to install Vista on the external drive,but
|> have a laptop with no floppy or cdrom and the only way to install
|> would be booting from the hard drive and accessing the Windows install i
|> copied there.And since my desktop pc is a Windows Vista i cannot ake the
|> disk bootable.Thank you for your recomendation,i ll give it a try.
|> "Alun Harford" wrote:
|> > Panos wrote:
|> > > I tried "format c: /s" to make an external hard disk bootable,but
|> > > command "/s" doesn't seem to exsist any more.Is there any way I can
|> > > it?
|> > You can use diskpart to set the disk's 'bootable' flag, but (unlike
|> > format /s) you'll still need to an operating system to the disk.
|> > basically doesn't support booting from an external drive (you can get
|> > to do it with BartPE, but Vista is only supported by WinPE, which is
|> > hard to find and doesn't support the full operating system).
|> > Alun Harford