Transcend External HDD Not Detected in My Computer option

October 14, 2014 at 02:26:42
Specs: Windows 7

I am facing some issues regarding my Transcend HDD. It's not appearing in My Computer/Windows Explorer option however it is shown in windows notification icons as USB Mass storage installed.
In Disk Management, the status of my ext disk shows as "Unknown 465.76GB Not Initialized". However, I can see my ext disk showing in Device Manager under Disk Drive and I can see the entry USB Mass Storage Device. I don't know why my ext Drive is not longer shown as E: drive in My Computer.
In short:
Before the status of my ext hard disk is :
- My Computer: E: drive and correct name
- Device Manager under Disk Drive - shown the model name
- Disk Management - shown as NTFS

- My Computer: disaappear
- Device Manager under Disk Drive - shown the model name
- Disk Management - shows "Unknown 465.76GB Not Initialized"

Will it erase all data from HDD if I select "Initialise" option?

Can you please help further? Thanks.

See More: Transcend External HDD Not Detected in My Computer option

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October 14, 2014 at 03:52:07
Yes, initializing the drive erases all data.

Try these steps instead:

User Info Page Biography for full specs.

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October 14, 2014 at 11:17:41
If all else fails you could go ahead and initialize, or quick format the external drive then use Easeus Partition recovery, or Testdisk, to restore the partition. If Easeus, or Testdisk, doesn't help, which I think it will, then try recuva to recover the files.

Get all from the links below.

message edited by OtheHill

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October 16, 2014 at 03:19:52

I tried below things which are not working :(
1. I opened the disk management and the drive was in "Online" status. I changed it to Offline and again made it "Online".
2. I tried to find blue bar which would need a change in drive letter but could not find any blue bar and its a black bar instead.
3. Uninstalled and re-installed the drivers for Transcend Storejet 500GB

What i did not try yet is "usbstor.inf" file option and "initialise" option. I am afraid of storing usbstor.inf as mentioned in 1 of the options (copy code and save text file etc) as well as afraid of initialise option.
@OtheHill: if i initialise the HDD, i hope the data will NOT be lost. please advise.


message edited by rrege

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Related Solutions

October 16, 2014 at 07:56:29
Post the full model number for the drive.

I assume you were using the included backup software?

Are you using the drive on the same computer with the same user login?

Are you using the cable that came with the drive?

Are you connecting directly to a integrated USB port on the computer?

message edited by OtheHill

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October 16, 2014 at 23:25:58

@OtheHill: To answer your doubts-
-Full model number: Transcend`s 500GB StoreJet 25M
-Backup software use: I did not try backup software tool from HDD
-Same computer test: I tried HDD on my own Dell Inspiron laptop with Administrator login along with my office HP Probook laptop as other user login.
-Cable: I was using cable came with drive but with single usb port. and after this blunder, tried using both ends of cable at usb ports.
-Use of USB port: i m using HDD directly to a integrated usb port on laptop.


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October 17, 2014 at 06:08:35
There are two possible models. M2, which is USB 2.0 and M3 which is USB 3.0. The M3 requires more power, which is the reason for the double USB connection. See the link below to determine which you have. The case color accents are different.

There is also a support link there to deal with specific issues.

As I stated above, IF all else fails you should be able to repair the partition, or recover data after a quick format, assuming you did not use their software, which can encrypt the data.

I suggest you try their support process first. 2.5" USB powered externals are more problematic than AC powered 3.5" models. Also, External drives MUST be properly removed, or corruption may occur.

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