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My second external drive isn't detected in 
Windows 

 

 

Sometimes only one of two external (ie, GoFlex, Backup Plus) drives mounts with a drive letter 
when connected to Windows. This article explains. 

Sometimes only one of two external (ie, GoFlex, Backup Plus) drives mounts with a drive letter 
when connected to Windows. 
This is caused if two drives have the same drive signature, which can occur when drives are 
setup in a mass production environment or when they are cloned. 

The issue can be quickly fixed by forcing the drive on-line. To force a drive online in Windows: 

1.

 

Press Windows key (

) + R. 

2.

 

In the run box type diskmgmt.msc 

3.

 

On the right, scroll down so you can see your external drives. 

4.

 

You will notice that the 1st external drive is 

Online

5.

 

You will notice that the other external drive is 

Offline

6.

 

Right-click on 

Offline

 (in the grey area of the box) and choose 

Online

 from the menu. 

 

The drive should show in Computer (Window Explorer) in a few seconds. 

Summary of Contents for STEA2000400

Page 1: ...h can occur when drives are setup in a mass production environment or when they are cloned The issue can be quickly fixed by forcing the drive on line To force a drive online in Windows 1 Press Windows key R 2 In the run box type diskmgmt msc 3 On the right scroll down so you can see your external drives 4 You will notice that the 1st external drive is Online 5 You will notice that the other exter...

Page 2: ...other external drives that exceed 2 1TB in size Microsoft only supports drives that are set up to use 512 byte blocks as destinations for image backups The drives listed above are compatible with all other Windows functionalities To allow 3TB and 4TB drives to work in older operating systems such as Windows XP these drives are configured using 4K byte blocks Microsoft has added support for 4K driv...

Page 3: ...fter You Restart Your Computer in MS DOS Mode Some System BIOS may not include the ability to disable USB devices from the Boot Order Boot Sequence If this is the case it is recommended that you disconnect the USB External Drive from your system until the system s operating system has fully booted at which time you can connect the USB Drive to your system Disclaimer REFERENCE TO THIRD PARTIES AND ...

Page 4: ...have connected an external drive that is formatted with an NTFS partition to a Mac computer MacOS cannot write to NTFS partitions and so will often indicate the drive is write protected Seagate GoFlex and GoFlex for Mac drives include an NTFS driver that can make the drives intercompatible between Mac and Windows so that may be a good solution See Document ID 214531 for more information For all ot...

Page 5: ...happens it may alert you that drivers were not loaded correctly These drivers are part of its own Windows registry First update Windows Vista to Service Pack 1 If this does not resolve the problem and the drivers do not now load automatically you may simply point Windows 7 or Vista to its own drivers manually From Vista 1 Right click on Computer 2 Choose Manage 3 Choose Device Manager Here is the ...

Page 6: ...Partition Table GPT Scheme was implemented under Microsoft Windows XP x64 edition Windows Server 2003 64 bit Windows Server 2003 SP1 all versions Windows Vista Windows 7 In a nutshell GPT Partition was developed to get around known MBR partition size issues the maximum size for a MBR partiton is 2 Terabytes TB GPT partitions enable this limit to be exceeded Note For more comprehensive information ...

Page 7: ...the Drive Signature It is highly recommended that you backup any all critical data on the drive before proceeding You must open Disk Management and document the Disk Number of the drive containing the GPT Protective partition as you will need this information later in the procedure 1 Determine the disknumber assigned to the GPT protected drive 1 Right click on My Computer 2 Choose Manage 3 Select ...

Page 8: ...an informational service only it is not an endorsement or recommendation implied or otherwise of any of the listed companies Seagate makes no warranty implied or otherwise regarding the performance or reliability of these companies or products Each company listed is independent from Seagate and is not under the control of Seagate therefore Seagate accepts no responsibility for and disclaims any li...

Page 9: ...f and press Enter For Windows 7 In the Search field type C windows system32 driverstor and press Enter 8 Delete the file INFCACHE 1 9 If you get an error when trying to delete this file try the following steps 1 Right click on INFCACHE 1 2 Select Properties 3 Click the Security tab 4 Click the Edit button 5 Select Users xxxx PC Users or something like Users 7xxxx Users 6 Under the Permissions for ...

Page 10: ...dows Device Manager it is possible that additional drivers are required for it that Windows lost track of the drivers or the drive is malfunctioning This article gives troubleshooting steps If the device is in Other Devices look for USB Mass Storage Device then it is possible that additional drivers are required for it that Windows lost track of the drivers or the drive is malfunctioning To see De...

Page 11: ...ENCE TO THIRD PARTIES AND THIRD PARTY WEB SITES Seagate references third parties and third party products as an informational service only it is not an endorsement or recommendation implied or otherwise of any of the listed companies Seagate makes no warranty implied or otherwise regarding the performance or reliability of these companies or products Each company listed is independent from Seagate...

Page 12: ...ter is on AC power and is idle system maintenance tasks may be able to run for a few minutes These system maintenance tasks include disk layout optimization to improve performance and preparing automatic system restoration points to increase reliability Typically these tasks occur the first time you leave your computer idle after you start it These tasks ensure that the system maintains its perfor...

Page 13: ...to the external drive 10 Connect the drive s USB or FireWire cable and check for detection If that does not correct the behavior and if the drive is also not detected by your computer the blinking light is probably a symptom of a larger problem If those steps do not return the drive to correct function it is very possible even probable that the drive has failed and needs to be replaced see our War...

Page 14: ...move Hardware icon in the System Tray will not work with the external drive because of the Norton Protected Recycle Bin If your Windows Recycle bin on the desktop has an N with a shield then Norton is running a special software on your system This is a known issue Step 4 Other software like antivirus programs or any programs or image files that remain open on the drive even Windows Explorer if its...

Page 15: ...y is configured to monitor a folder on the external drive for new content it will not allow a Safe Remove Instructions may vary depending on the version of Media Player 1 Open Media Player 2 From the top menu choose Tools then Options 3 Choose the Library tab 4 Click the Monitor Folders button 5 View the Advanced Options 6 Remove items that point to the drive letter used by the external drive ie E...

Page 16: ...2 Select Turn Windows features on or off 3 Confirm that the Indexing Service is unchecked If it is checked uncheck it and click OK ...

Page 17: ...k on Computer to open it then right click on the external drive s drive letter for example E and select Properties 5 Uncheck the Allow files on this drive to have contents indexed in addition to file properties box ...

Page 18: ...6 Then retry the Safe Removal For Windows XP 1 Click on the Start menu on the bottom left of your screen Select Control Panel and then Add Remove Windows Components ...

Page 19: ... it is checked uncheck it and click OK 3 Double click on My Computer to open it then right click on the external drive s drive letter for example E and select Properties 4 Uncheck the Allow Indexing Service to index this disk for fast file searching box ...

Page 20: ... the System Tray 2 Choose Exit This will release the drive and may allow you to safely remove the drive Also please see the linked to Microsoft Support article on this topic REFERENCE TO THIRD PARTIES AND THIRD PARTY WEB SITES Seagate references third parties and third party products as an informational service only it is not an endorsement or recommendation implied or otherwise of any of the list...

Page 21: ... any company To obtain product specifications and warranty information please contact the respective vendor directly There are links in this document that will permit you to connect to third party web sites over which Seagate has no control These links are provided for your convenience only and your use of them is at your own risk Seagate makes no representations whatsoever about the content of an...

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