Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: "No Boot Sector Found On USB Device"


13 Jul 2011   #1

Windows 7 Home Premium 64
 
 
"No Boot Sector Found On USB Device"

I am trying to set up an external USB drive as a bootable installer for Windows 7 Pro (x64). The drive is a Western Digital My Passport 300GB USB drive. I am attempting to partition the drive into a 10GB partition that runs the Windows 7 installer, and a second partition containing the rest of the drive that will store other files. This is the process Iíve been using:


1. Create 10GB Partition
2. Set Partition to Active
3. Format Partition to NTFS with and allocation unit size of 64KB. (The first three steps Iíve done using both command line and Disk Management)
4. Assign a letter to the drive
5. Set USB as bootable using bootsect (bootsect /nt60)
6. Copy installation files (tried both copy/paste and command line copy of files)


All of the steps have completed without error each time that I have tried them.
Iíve run through multiple guides online with slight variations. Iíve run the formatting, partitioning, cleaning, and copy from both the Disk Management and command prompt. Iíve tried by mounting the ISO files and copying them and by burning the files to a DVD (that successfully boots) then copying the DVD files. And the result is always the same. When I choose the boot option from an external USB drive, the screen tells me ďNo boot sector found on USB device.Ē The drive is good, Iíve run Checkdisk successfully, and it also recognized under ďComputerĒ and in Disk Management. Iíve also tried a different brand HDD (donít remember what type), running it through the same process, and the same result. My computer BIOS (Dell XPS 1710M) is up to date and set for USB boot first, and I am getting the same result on other machines.


Anyone have any ideas? Am I leaving out a step? Is it a compatibility issue with the hard drives? Has anyone encountered this problem before? I am aware that there are utilities out there with GUI's, but I much prefer handling this through command prompt if possible.


Any help you could provide would be greatly appreciated.


Below are some of the links that I followed.
Kevin’s Blog
Maximum PC | How To: Install Windows 7 from a USB Key!




My System SpecsSystem Spec
.

14 Jul 2011   #2

Windows 7 x64 pro/ Windows 7 x86 Pro/ XP SP3 x86
 
 

My System SpecsSystem Spec
14 Jul 2011   #3

Microsoft Community Contributor Award Recipient

ME/XP/Vista/Win7
 
 

Follow Method two in this tutorial:
USB Windows 7 Installation Key Drive - Create
My System SpecsSystem Spec
.


14 Jul 2011   #4

Windows 7 Home Premium 64
 
 

Thanks for the responses. I've actually already tried both of those multiple times, and I'm getting the same result. The command lines, steps from the Disk Management interface, all of it I've done multiple times, and both machines are not recognizing any boot sector on the disk.
My System SpecsSystem Spec
14 Jul 2011   #5

Windows 7 x64 pro/ Windows 7 x86 Pro/ XP SP3 x86
 
 

Just to affirm- you need to format that partition fat32, ntfs never worked for me.
My System SpecsSystem Spec
14 Jul 2011   #7

Windows 7 Home Premium 64
 
 

I'll give it another try with FAT32. I do know that I've tried it at least once, and I'm pretty certain a few times. If it doesn't work, I'll go through it again and upload a screenshot of CMD.

Thanks again.
My System SpecsSystem Spec
14 Jul 2011   #8

Windows 7 Home Premium 64
 
 

I found the problem. I was setting up the boot partition with allocation units at 64KB rather than 4KB. Apparently Windows 7 doesn't allow an OS volume to exceed 4KB. Switched it over and worked just fine.

Thanks again for the help.
My System SpecsSystem Spec
14 Jul 2011   #9

Microsoft Community Contributor Award Recipient

ME/XP/Vista/Win7
 
 

You are wecome.
We are here 24/7 to help.
My System SpecsSystem Spec
Reply

 "No Boot Sector Found On USB Device"




Thread Tools




Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

© Designer Media Ltd

All times are GMT -5. The time now is 12:15 PM.
Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App
  

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33