If anyone knows what is going on or has some ideas I've not tried I would love to hear from you and get this figured out. Suffice to say this is not a promising start for Windows 7. Sunday, September 20, PM. Problem solved, kinda. To get around this "bug" users can install XP onto the hard drive. After I used XP's installer to delete the partitions and make a new one on the drive that seemed to fix the issue.
Windows 7 will now detect and install onto the drives as normal, and without any need for AHCI drivers. This is a major regression in Windows 7. Yet after installing XP , the Windows 7 installer was able to detect, delete, and create a new partition to install onto, and the XP installer had no problems detecting the drives. I'm not sure at this stage where to file a bug report, but this is not going to be an insignificant problem.
I am now finding other tech enthusiasts with similar problems due to drives previously used in RAID arrays, in fact that was how I got the idea to try XP in the first place. Monday, September 21, AM.
Hi Druid, thanks for your reply! In an effort to keep the post length down I seem to have left out that I tried both a quick format, and when that failed I then tried a low level format again from inside a running Windows 7 RC installation on one of the Seagate drives. But just as before I could not use any of the advanced drive options and could not create a new partition to install the OS.
Some users are stating formatting the drives in XP fixes this problem I will try the RAID option you suggest, and if that doesn't work try formatting them from XP since I've exhausted every other possible explanation for this. I tried all kinds of things to install the drive. So I did what was suggested above and put Windows XP on the drive. Sure enough, I was able to get everything working after that.
I reformatted the HD in Windows 7 and made it the boot drive. Thanks for providing the solution--I was getting ready to bash my head into a wall! By the way, the installation software that came with the WD HD was incompatible with Windows all I got was an error message saying that files couldn't be opened.
Sunday, October 25, PM. I've run into exactly the same problem - also using Seagate, just the MB Version. Running the RTS of Windows 7 I have removed existing partitions under Windows 7, created a new one and formated it with standard settings.
No errors found, hard disk was accessible. Sad to say that also the release Version of Windows 7 did not fix this problem.
Thanks for your post - i might have given up on this one ; Phate. Monday, October 26, PM. Saturday, November 14, PM. I have also had the exact same problem and have also tried everything you've mentioned other than installing XP onto the drive first, i will give it a go tonight. I have tried installing every driver i could find for my motherboard, windows 7 finds the drivers if i point it to the folder containing them, it then installs them and takes me straight back to original screen, "drive not detected, please install drivers" or something along them lines.
Generally, if a SATA drive is configured as the bootable drive, then the computer relies on that drive to boot the computer and to launch Windows. It is the source of most of the computer's operations. So, if the computer suddenly stops detecting the bootable drive, this will almost certainly mean that the computer will fail to boot at all. Instead, some error message will occur, and it will become obvious that a serious problem has occurred. This set of troubleshooting steps will attempt to get the drive detected again, or to conclude whether the drive has failed and should be replaced.
One error in particular, however, is more important than others to watch out for. If a "SMART error" has recently appeared on your computer, this generally means drive failure is imminent or has already occurred. If you have received a SMART error, we strongly recommend that you stop everything and make an immediate backup of any and all important data contained on this drive that is not already backed up.
If the drive is not receiving power or receiving an incorrect level of power, it will not spin up. To check to see if this is the cause of the BIOS not detecting the hard drive, follow these steps:. A drive may be failing but continue to function normally for a short time, so SeaTools is often a better judge of whether the hard drive is failing than the drive's functionality at any given moment. Therefore, if SeaTools indicates that the drive is failing, Seagate recommends backing up your data immediately and replacing your drive.
Please see our Warranty Information page for replacement information. It appeared suddenly, without warning:.
Each Seagate hard drive engages in regular self-tests, and most computers automatically run regular SMART tests on the hard drive s installed on them. SMART tests indicate whether a drive is approaching imminent failure. Thus, if a SMART error appears suddenly, it virtually always means, unfortunately, that the drive is about to fail and should be replaced.
The idea then and today is to predict a failure before it happens. Various attributes are being monitored and measured against certain threshold limits. SeaTools does not analyze attributes or thresholds. As a matter of policy, Seagate does not publish attributes and thresholds. Please remember that these third-party programs do not have proprietary access to Seagate hard disk information, and therefore often provide inconsistent and inaccurate results.
SeaTools is more consistent and more accurate and is the standard Seagate uses to determine hard drive failure. Back to the top. Error Messages :. Black screen when Windows is booting. See Microsoft Knowledge Base Article. If you encounter a delayed write failure, please check the following things:. A FAIL result means two things:. The BIOS is a basic status monitor for the state of your computer and its devices.
This key will vary by computer make and model, but it is often Escape, Delete, F1, or F2. Consult your computer manufacturer if you are unable to enter the BIOS. As the system starts, the auto-detect feature may display the drive model number on screen. Seagate drive model numbers begin with the letters "ST". If the drive is not detected in the BIOS.
If your computer is desktop, you should make sure that the USB port into which the Seagate external hard drive plugs is on the back of your computer. All in all, it is not so tough to fix Seagate external hard drive not showing up in My Computer or This PC issue as long as you take proper action. If you tried the solutions mentioned above and the Seagate external hard drive is still not recognized or detected, the cause might be the hard drive itself.
In such case, you can apply professional hard drive software to diagnose your hard drive. If it dies, what you can do is to replace it. Seagate external hard drive not showing up in My Computer Seagate external hard drive is a kind of popular portable storage device, which performs well and enjoys good reputation among computer users.
Why is external hard drive not showing up on my computer? Solutions to Seagate external hard drive not showing up in My Computer In the last paragraph, we have listed possible reasons behind Seagate external hard drive not showing up in File Explorer.
Solution 1. Changer or assign drive letter Solution 2. Initialize Seagate external hard drive Solution 4. Format Seagate external hard drive Solution 1. Changer or assign drive letter If the Seagate external hard drive partition has no drive letter, you should assign a drive letter to it and you can approach it form My Computer or This PC.
Solution 3. Initialize Seagate external hard drive If a disk has not been initialized, it will not be presenting in Windows File Explorer.
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