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: Want to install Windows 7 on eSata drive

20 Jun 2010   #21


unfortunately, the other posts are correct, you can't install windows 7 to an external hdd connected via eSATA

My System SpecsSystem Spec
20 Jun 2010   #22

Windows 7 x64

well, I don't quite understand it but you folks have much more experience than me. I've gone ahead and made a partition on my internal hard drive and installed a copy there. It is working fine. I had just wanted to try the eSATA thing but its okay. Thanks for all your help and putting up with my ignorance.
My System SpecsSystem Spec
20 Jun 2010   #23


Hey no problem, and it's only ignorance if someone offers the correct information and you don't listen..
My System SpecsSystem Spec

02 Sep 2011   #24

Win7 home premium 64 bit
Eye roll

I realize this is an old post, but you should take your own advice. OP was absolutely right, you just have to set the SATA drive first in the bios boot order.

What was that about ignorance?
My System SpecsSystem Spec
14 Oct 2012   #25

Win7 Home Premium x64
This works!Win7 runs on eSATA drive

I am running Win7 on my internal drive and a backup copy of Win7 on an external drive (eSATA). I keep the external copy as a clean copy in case my laptop gets infected/corrupted and I need to replace the current copy of Win7 on my laptop. I made the external copy functional because I hate the long wait and procedure for seemingly hundreds of Win7 updates on a new installation. So every couple of weeks I plug in the eSATA drive, run that backup copy of Win7, do the updates, and then go back to using the working copy on my internal drive. I changed the boot loader on my internal drive using the free program EasyBCD so the laptop would recognize the eSATA drive as a bootable option.

Here's how I did it:

1. Opened laptop, removed current HDD & installed new/clean HDD in laptop
2. Installed Win7 on new HDD using my product keys
3. Removed new Win7 HDD from laptop, placed it in an eSATA enclosure
4. Returned old HDD to laptop
5. Booted up old HDD and installed EasyBCD
(EasyBCD - Take control of your boot loader | NeoSmart Technologies) (Free for personal, non-commercial use)
6. Externally connected eSATA drive with the new Win7, and made note of the drive letter assigned to the Windows partition of the eSATA drive (not the 199MB partition, but the larger partition with the actual Windows 7 operating system)
7. Ran EasyBCD to change boot loader on the internal hard drive
8. Using EasyBCD, added new entry for Win7 (called it "Win7 eSATA") and told it to find it at the drive letter assigned at #6 above.
9. Saved new entry.
10. Restarted laptop

Now at boot up I am given a menu to choose between
1. Windows 7 (internal)
2. Windows 7 (eSATA)

Option 1 is set as the default and Windows 7 (internal) will run normally. But I can choose the other option at any time. I do not need to have the Windows 7 (eSATA) drive connected unless I intend to use it.

Can you install Win7 to the eSATA drive while it is connected with the external connection? Answer: I have no idea, and no interest in finding out. This method worked for me with the least amount of hassle.

There you have it. Two working copies of Win7 assigned to the same computer, one internal, the other external.

Disclaimer: Although I see little danger in using EasyBCD to change a boot loader, you do so at your own risk.

“Problems cannot be solved by the same level of thinking that created them.” - Albert Einstein
My System SpecsSystem Spec

 Want to install Windows 7 on eSata drive

Thread Tools

Similar help and support threads
Thread Forum
use eSATA for external drive?
I'm trying to vet my research results before shopping for a purchase. (I'm pretty new at deciphering specs.) The question here is in reference to the tutorial Portable OS - Carry your OS on an External Drive found here:...
Hardware & Devices
eSATA drive not detected--can CrystalDiskInfo damage an eSATA drive
I plugged in my eSATA drive while CrystalDiskInfo was running and the computer froze. There was no way to regain control of the computer so I restarted. So now this eSATA drive is not recognized by the computer. The eSATA drive works in another computer. What's really weird is that...
BSOD Help and Support
esata drive not shown in windows.
Ok i have a Seagate freeagent pro 500g external HDD. Was running usb but new MB has esata so i wanted to give it a go. Well not so easy as i thought. If esata drive is hooked to port when computer loads ,Bios sees the drive but wont get past the windows load screen. Unpluged from port and...
Hardware & Devices
Windows 7 not recognizing eSATA drive, but BIOS is
I just got a new Gigabyte GA-P55A-UD4P motherboard, and I am trying to get Windows 7 64-bit to recognize an external hard drive connected to the eSATA ports. I've set the the following BIOS options: PCH SATA Control Mode to AHCI HPET Mode to 64-bit eSATA Controller Enabled eSATA Ctrl...
Can I move eSATA Drive into case without reformatting the drive?
I backed up files from one 1TB eSATA drive to another 1TB eSATA drive. It now occurs to me that it might have been better to have installed the backup drive in my computer case . Not wanting to do the backup all over again, can I simply install the drive in my computer without having to...
Hardware & Devices

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 05:29.
Twitter Facebook Google+