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: external drive could not be seen anymore

18 Oct 2015   #1

Windows 7 Professional x64
external drive could not be seen anymore


I also had similar problem regarding my external HDD so I register here and hoping that we can fix it. I have a Transcend Storejet 1TB external HDD. I am using a VMWare that was inside my hdd. I closed down the screen and accidentally the cable was detached from my laptop usb socket and when I plug it back my external drive could not be seen anymore in My Computer. Disk Management says uninitialized. I believed there was no problem with the cable because Device Manager can see the Transcend Storejet in the list of disk drives. I can also see the taskbar for Safely Remove notification.

Here is the screenshot of the Disk Manager

Here is the Disk Management

Note that I already used the Magic Partition Wizard. However, the tool did not detect my external hdd.

Wishing and hoping that I can get my hdd working again. There are lots of files I stored in there.

My System SpecsSystem Spec
19 Oct 2015   #2

Windows 7 Home Premium

My System SpecsSystem Spec
19 Oct 2015   #3

Windows 7 Home Premium 32 bit

That was a good reference by copiman and I have bookmarked it.

Now it assumes that something may not be alright in your PC and delineates the various procedures to correct it.

To cut short, we always recommend that you try the external HDD on another working PC. If the HDD functions right on another PC, then you should go through all the above procedures,

If your external HDD does not function in another working PC too, then the fault is definitely on your HDD and not your PC and so you need not go through all the procedures mentioned therein. ( Of course there is no harm if you want to do it all.)

So try your Transcend external on another good PC. If it does not work there also and shows that is unknown and not initialised , then,

Go ahead and initialise your drive as MBR but stop with initialisation only and close any further dialog box. Do not proceed further to create a new volume and do not format it.

Note: Initialisation only writes the MBR code in Sector 0 and that does not affect your data that starts at Sector 63/2048 onwards..

So go ahead and try to initialise the drive and report what happens.

( If initialisation is successful then stop with it. We can then run Partition Recovery Wizard and get the partition data also written into sector 0.

If initialisation is not successful and you get an error message, then it means that the SATA to USB bridge/HDD inside the enclosure has failed. If you want to recover the data you may have to take the HDD out, hook it up as an internal drive on a desktop and check. If the HDD is good you may be able to recover the data. )
My System SpecsSystem Spec

20 Oct 2015   #4

Windows 7 Professional x64

Ok, I'm here at the computer shop using a desktop computer. I plugged my external and went to disk management.

I cannot initialised it because of the Cyclic Redundancy Check. I tried it twice, no luck.

I will go home and try to open my hdd and see if what I can do.
My System SpecsSystem Spec
20 Oct 2015   #5

Windows 7 Home Premium 32 bit

Ok. That is bad indeed.

Now let us hope that it is the interface card inside that has gone bad and not the HDD.

Carefully pry open the enclosure , take the HDD out and plug it into the motherboard SATA port on a desktop and check.

Provided it is not the HDD that has gone bad, your drive should show up and the data in it accessible.

Be aware that doing that will void any warranty. So do it only if you do not want to go in for a warranty replacement.
My System SpecsSystem Spec
21 Oct 2015   #6

Windows 7 Professional x64

One question, I'm already away from the desktop computer. I' only using a laptop as of the moment. I'm not sure if there's a SATA port on my laptop?

I think I need to buy a usb+sata cable.
My System SpecsSystem Spec
21 Oct 2015   #7

Windows 7 Home Premium 32 bit

Ideally, it should be connected directly into the SATA port on the motherboard without another "unknown" interface inbetween in order to determine whether the HDD is good or faulty.

Try and check whether any of your friends have a self-assembled PC and can help you. Otherwise check with your friendly neighbourhood computer shop.

If the HDD is accessible with a direct connection, then you may buy a branded enclosure and put the HDD inside. I consider a USB-to SATA adapter as a dirty and less than desirable connection since it will leave your HDD open and susceptible to damage.
My System SpecsSystem Spec

 external drive could not be seen anymore

Thread Tools

Similar help and support threads
Thread Forum
Win7 x64 doesn't mount external hd anymore, have to do it manually
Hello, Windows doesn't mount any external drives anymore, i have to use the disk mangement tool to add a letter to the drive manually each time. I run MacDrive (latest), if it may help. Windows 7 Ultimate x64 sp1 Thanks for your help, fr3udes
Hardware & Devices
my external hard drive is not recognised anymore by my computer
i have a seagate external hard drive that my computer no longer recognises even though it used to, i have tried all three of my USB ports and it still wont work even though they work for other things but when i connect the hard drive to my TV it is recognised and can b used so im assuming its...
Hardware & Devices
Windows 7 will not let me access my 3TB external HDD anymore :(
Hello, I have been working with this HDD for almost a year now and have not had any problems with it till today. I unplugged it from my computer earlier and now when i plug it back in it goes through the normal "Installing device drivers.....device drivers installed" but after all of that it...
Hardware & Devices
Windows Not Seeing DVD Drive Anymore
Before I ask this, keep in mind this is not a hardware issue; I can boot from DVDs and CDs without any problem, so the drive is connected correctly and is still working fine. The last couple weeks I have had random power failures in the area I live in, so I suspect certain files on my PC may...
Doesn't show external drive anymore but visible in the disk management
I have a 2,5" 500GB external hard-drive with a single partition (NTFS). I can see it in the disk management utility (see attached screenshot) but it doesn't have a drive letter nor can't I assign one. Attached to another PC running Windows XP it says "unknown partition" but also error-free and...
General Discussion

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 14:06.
Twitter Facebook Google+