After Installing Ubuntu on an External Hard Drive, Receive "error: no such device"

[LastDino]

That link also tells you to run boot repair with W7 installation DVD. Don't do it with pirated one on genuine machine, use genuine one only which you will have if it is genuine.

If nothing works for you, you can simply use live ubuntu boot and copy all your data to some other drive/take a backup and do fresh install of W7. Again, it is not such a bad choice either.

[oldfred]

Boot-Repair does not run on Windows, only on Linux.
You can download it as a liveCD, or install from the ppa into your Ubuntu installer if you can boot that, or into any working Linux install.

[LastDino]

Boot-Repair does not run on Windows, only on Linux.
You can download it as a liveCD, or install from the ppa into your Ubuntu installer if you can boot that, or into any working Linux install. .

I haven't tested this but looks like something that could work tbh

http://support.microsoft.com/kb/927392
http://www.howtogeek.com/howto/32523...ader-problems/

Why does it not work when Microsoft support is telling it does? o-o

/FixBoot

This option writes a new boot sector to the system partition by using a boot sector that's compatible with Windows Vista or Windows 7. Use this option if one of the following conditions is true:

• The boot sector was replaced with a nonstandard Windows Vista or Windows 7 boot sector.
• The boot sector is damaged.
• An earlier Windows operating system was installed after Windows Vista or Windows 7 was installed. In this situation, the computer starts by using Windows NT Loader (NTLDR) instead of Windows Boot Manager (Bootmgr.exe).