SeaTools - Quick diagnostic tool that checks the health of your drive. Our Story Blog Open Source Partners. Support Downloads. I have a Seagate Backup Plus 1TB hard disk, it suddenly doesn't detect anymore. The device is lighting up and giving an operational sound/vibration, but the computer doesn't show the hard disk in My computer. Sounds like your best recourse would be to pull the hard drive and test it in a Windows Machine, or dual-boot Windows on your Mac. Software that's actually useful, like Seatools, which does far more than Smart Monitoring, and is far better than the sub-standard disk utility built into Mac.

• Reason 1, your Mac can use a Seagate external hard drive formatted as HFS+ for a Time Machine backup. So if anything happens to your Mac you can restore your entire Mac from a Time Machine backup. Reason 2, when you accidentally delete a file you want, then you can bring that file back as well. Only a Mac can read a HFS+ file system.
• The Seatools application did not resolve the issue, as expected. And investment wise, it is not worth it to send it off to a professional for recovery.

Seagate SeaTools for DOS is a free hard drive testing software that runs independent from your operating system. Seagate provide a iso file which needs to be burned to a CD. Considering that CD/DVD drives are fast disappearing, and most computers these days support booting of a USB drive, it makes life easier if the the iso get converted into USB bootable. It is actually easy to do it on a Mac using the following steps:

a) Download Seatools for DOS from Seagate site (http://www.seagate.com/support/downloads/seatools/)

b) Open the iso file downloaded. Simple double clicking should mount the file on your desktop. Open the mounted folder, and extract the SeaTools.ima to your desktop.

c) Rename SeaTools.ima to SeaTools.img (Accept the warning dialog box)

d) Insert a USB drive that you will use. Note that any data on this drive will be completely erased.

e) Start your terminal window and find the USB drive identifier:

. Make sure that you get the correct disk identifier. In my case it was /dev/disk1.

f) Unmount the usb disk folder using the following commands in your terminal window:

g) Copy the contents of the SeaTools.img file to USB drive

That’s it. Your USB drive will now boot to SeaTools. One thing that I have observed with the SeaTools is that if you have set the drives to be discovered through AHCI mode in your bios, it might not always detect the drives. It is better to change the drive detection to IDE for it to work reliably.

For those looking to use the same procedure on a Windows machine, this link should help your out:
http://blog.nowherelan.com/2013/04/04/boot-seatools-off-of-a-usb-drive/ . For Linux and BSD, the procedure should essentially remain the same as Mac in principle, although the disk identifier & unmounting commands might be different. dd should work on all.

Occasionally, when you plug in any Seagate external hard drive to PC, it may not show up or be detected by your PC. Consequently, the disk itself and the folders and files saved on it become unapproachable and unluckily this is a common problem with Seagate drives. If you don't have any important data on the hard drive, you can just format it easily. However, if it contains lots of important data, how can you recover data from it? In this article, we'll tell you why is your Seagate external hard drive not showing up or detected. Then, we'll cover the methods to fix it as well. And what's important, we'll tell you how to recover data from the hard drive after making it work again.

1Why Seagate External Hard Drive Not Showing Up or Detected?

In most cases, you can access the Seagate External Hard Drive through Windows File Explorer. However, there is a great possibility that the hard drive doesn't show up in the devices and drives list. Apart from that, the Seagate external hard drive might also not show up in Disk Management. The problem can be caused by one of the following reasons:

• Broken USB port or broken USB cable

• Nebula vst plugin download. Unsupported File System Mac linux usb loader download dmg.

• Partition issues on the hard drive

• The hard drive driver is corrupted or outdated.

In the following part, we'll talk about how to fix the Seagate external hard drive not showing up in the computers based on the above possibilities.

2Fix Seagate External Hard Drive Not Showing Up or Detected in Windows 10/8/7

Seagate external hard drive is always used to back up important data or transfer data between computers. So, it's essential to make it works fine all the time. The following are some solutions to solve 'Seagate external hard drive not showing up or detected'.

• Method 1: Try a Different USB Port or USB Cable

• Method 2: Initializing the External Hard Drive

• Method 3: Create a New Partition

• Method 4: Change or Assign Drive Letter

• Method 5: Reformat Hard Drive

• Method 6: Update or Reinstall the Device Driver

Method 1: Try a Different USB Port or USB Cable

Seagate Seatools For Mac

If your Seagate external hard drive is blinking but is not detected by your PC, then you can try to unplug it from the USB port and should plug it into a different USB port. Besides, you can reboot your PC and try to connect your Seagate external hard drive to the computer again. You can also connect it to a different computer or use a different USB cable. If this simple solution works then your problem is resolved. Download swap magic 3.8 free. If not then move on to the other solutions offered here.

Method 2: Initializing the External Hard Drive

When you find the Seagate external hard drive is not showing up in your computer, the first place you should check is Disk Management. You can right click on the Windows button and choose 'Disk Management' from the list. Or press Windows button + R to bring out the dialog. Enter diskmgmt.msc to proceed. This will also open Disk Management.

You'll see the available hard drives which are connected and recognized by the computer. If you are attaching a brand new external hard drive to the computer for the first time, you'll see it here but it's not initialized. Follow the simple steps below to initialize the disk.

Step 1: Right click on the disk and select 'Initialize Disk'.

Step 2: Choose a proper partition style and click 'OK' to confirm it.

Method 3: Create a New Partition

If you see that your disk is simply unallocated, you only need to create a new partition for it. Here's how to do it.

Step 1: Right click on the unallocated disk and choose 'New Simple Volume' from the options.

Step 2: A 'New Simple Volume Wizard' will show up. Follow the wizard to specify the volume size and assign drive letter or path.

Once done, remove the Seagate external hard drive and connect it to the computer again. Then, you'll find that the disk is detected and showing up in the Windows File Explorer.

Method 4: Change or Assign Drive Letter

If the Seagate external hard drive does not have a drive letter or the drive letter conflicts with other disks, the hard drive won't show up in your computer. Under this circumstance, you need to assign or change the drive letter.

Step 1: Right click on your hard drive and select 'Change Drive Letter and Paths'.

Step 2: Select 'Add' option if your hard drive doesn't have a drive letter, and select 'Change' option if it already has one and you want to change it.

Step 3: Choose a letter for the drive and that's all.

Method 5: Reformat Hard Drive

As we have mentioned in the Part 1, the unsupported File System will cause the 'Seagate external hard drive not showing up' issue. If you find your hard drive is partitioned but still not show up in your computer, it is possible that it's partitioned with a different file system. For example, if you have formatted the hard drive with APFS File System on Mac, this problem will certainly happen when you connect the hard drive to Windows computers. To fix it, you need to reformat your Seagate external hard drive with NTFS File System or FAT32 File System.

Step 1: To do this, right click on the hard drive and select 'Format' option.

Step 2: Choose 'NTFS' or 'FAT32' from the File Sysetem.

Note: Reformat your Seagate external hard drive with new File System with erase all the data on it. If you can, please remember to back up your data before formatting. However, if you do not have the chance to back up the data, you can use a professional tool to recover the data after formatting.

Seatools For Mac

Method 6: Update or Reinstall the Device Driver

Seatools For Mac Os X

Maybe your Windows has a driver problem with your device and by using the Device Manager you can check it. You can open Device Manager by pressing Win+R together to open the 'Run' dialog then enter devmgmt.msc. Next, Expand the Disk drives category and check for any devices with a yellow exclamation point next to them, right-click on its name and select 'Update Driver'. If it works then it's ok otherwise uninstall and then reinstall the driver. To uninstall the driver, click on Uninstall that will help you completely uninstall Drivers.

3Bonus: How to Recover Files from Formatted Seagate External Hard Drive?

Due to the 'Seagate external hard drive not showing up' issue, you might not be able to back up your data before initializing or reformatting the hard drive. Luckily, there are loads of powerful data recovery programs nowadays. One such program is iMyFone AnyRecover which can help you recover data from the formatted hard drive easily and quickly. Furthermore, it is compatible with all the versions of Windows. Together with the accessible interface, the software does not require any technical knowledge. You can do it by yourself without anyone's assistance.

Why Choose iMyFone AnyRecover?

It proves helpful to support 1000+ file types including documents, musics, images, audios, emails, archives and others.

Based on the all-round scan and deep scan, it guarantees the highest recovery rate in the market.

After scaning, you can preview the data freely. And you can use the free version to recover 3 files for free.

By using the program, your data security is 100% ensured.

Simple Steps to Recover Data from Formatted Hard Drive:

Step 1: First of all launch AnyRecover software. Then select a disk under the 'External Removable Devices' tab.

Step 2: After selecting the location, hit 'Start' button to start scanning.

Step 3: The program will start scanning, and show you all the lost files in the list. You can select to preview them and click 'Recover' to get back your data.

Seatools Diagnostic For Mac

Overall, it is not too difficult to fix Seagate external hard drive not showing up only if you take proper action. If you tried the above-mentioned solutions and the Seagate external hard drive still not detected or recognized the cause might be the hard drive itself. If you accidentally format your Seagate external hard drive, iMyFone AnyRecover can help you recover data from it.