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 hard drive not detected when connected to PC

23 Oct 2011   #11
rraod

MS Windows 7 Ultimate 64-bit SP1
 
 

When you say your internal HDD is giving error messages that it is failing, You should replace it with another internal HDD (probably a bigger one) after cloning the partitions to the new HDD. I think this should be your first priority. Having any number of external HDDs will only protect your data but not the functionality of a healthy laptop.


My System SpecsSystem Spec
.
20 Feb 2012   #12
Leadhead

Windows 7 Pro 64bit
 
 

I hate to resurrect a dead thread, however I did find a cause and solution to this problem, that worked for me at least. I had a 2tb HP external drive already on my system. My problems began when I purchased 2 more (identical) drives. I found after much deliberation that all the drives were showing in Disk Management, but not in explorer. In the lower portion of Disk Management, where it shows a visual representation of the drives, there appeared a tiny speech bubble under the Disk # (ie Disk 0, Disk 1 etc) along with the word "offline". Hovering over these told me (I forget the exact wording) something to the effect that there was a a collision in digital signatures. I realized that Windows was seeing them as the same drive and attempting to assign the same letter. So using a program called Zentimo (I think there is a free version) I changed the drive letter (H) of the old hard drive to (E) and that allowed me to bring the next disk "online". I then changed this drive letter (again it was assigned as (H)) to (I), allowing the last drive to come online. I changed this drive to (J) and the original back to (H). Then I set all the drive letters as "fixed", meaning that the drives will always be assigned the same letter. Hope this helps somebody.
My System SpecsSystem Spec
23 Feb 2012   #13
Jim101

Windows 7 Professional 64 bit
 
 

Quote   Quote: Originally Posted by Leadhead View Post
I hate to resurrect a dead thread, however I did find a cause and solution to this problem, that worked for me at least. I had a 2tb HP external drive already on my system. My problems began when I purchased 2 more (identical) drives. I found after much deliberation that all the drives were showing in Disk Management, but not in explorer. In the lower portion of Disk Management, where it shows a visual representation of the drives, there appeared a tiny speech bubble under the Disk # (ie Disk 0, Disk 1 etc) along with the word "offline". Hovering over these told me (I forget the exact wording) something to the effect that there was a a collision in digital signatures. I realized that Windows was seeing them as the same drive and attempting to assign the same letter. So using a program called Zentimo (I think there is a free version) I changed the drive letter (H) of the old hard drive to (E) and that allowed me to bring the next disk "online". I then changed this drive letter (again it was assigned as (H)) to (I), allowing the last drive to come online. I changed this drive to (J) and the original back to (H). Then I set all the drive letters as "fixed", meaning that the drives will always be assigned the same letter. Hope this helps somebody.
This will probably help somebody, but not me. My external hdd won't show up in the disk manager at all. I've given up on it now and am looking at getting a new one to back up my hard drive while I reinstall windows (to fix windows update, possibly fixing the old external too). Thanks for the (albeit a bit late) reply anyway.
My System SpecsSystem Spec
.

Reply

 External hard drive not detected when connected to PC




Thread Tools




Similar help and support threads
Thread Forum
External Hard Drive Not Detected
I have a western digital mybook (WD5000C032-002) that for some reason is not being detected by Windows 7 RC. It is a USB connection straight from the mybook to one of the motherboard's usb ports. All my device drivers are up-to-date. If I go into "Devices and Printers" and click on "Add a...
Hardware & Devices
External Hard Drive not Detected
I have a small 50gb HHD powered from USB It will connect to my laptop running windows 7 home premium but not my pc running windows 7 professional When plugged into my pc by usb the Disk does not power up and spin (the light does come on) There is no recognition of it in my computer, device...
Hardware & Devices
External hard drive not detected---again
I have an 1T external drive plugged into esata port. It used to work and now it doesn't? When I boot up bios correctly identifies the drive as a seagate sata drive. When I look at device manager is says its a seagate SCSI drive and therefore the system doesn't recognize it at all? In device manager...
Hardware & Devices
External hard drive not detected
Hi guys, My computer cannot detect my 250GB external hard drive and I'm having a hard time fixing this issue, and I've been searching for the problem to be fixed in the internet, unfortunately nothing was found. Before this issue happened, there was no problem, it was working fine until I did...
Hardware & Devices
External hard drive not being detected
Hi, I have been using my Iomega HDD for a while now and have never had any problems before today. It worked fine when connected to my Acer Netbook running windows 7 starter 32 bit. I connected to a friends laptop and it said to access it it must be formatted, so i bought it home and it said the...
Hardware & Devices
Looking for an External Hard Drive to be Connected Always!
I have 2 internal 500GB Harddrives. 1 for Operating Systems. 1 for Library (seems enough for now). I am using the Library one also to edit my videos. But sometimes, I am having trouble with the space (after the library there is just over 100 GB left). I am looking for an external hard disk...
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 15:22.

Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App