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Windows 7: WD MyBook Essentials 2.0 1TB worked - but not anymore

14 Jun 2009   #1

xp & osx
WD MyBook Essentials 2.0 1TB worked - but not anymore


I've read numerous posts in the forum and tried a few things without any luck.

My Western Digital MyBook Essentials 2.0 1TB have been working for a week now with Windows 7 RC1 (clean install), but today all of a sudden it won't be recognized.

The funny thing is that it is recognized just fine on a winxp laptop.

By the way, windows 7 is installed on an Acer Aspire One if that matters.

How can I maybe uninstall the driver for MyBook (if there is any?) ?

My System SpecsSystem Spec
14 Jun 2009   #2

xp & osx

By the way, after enabling administrator account and logging into it (as per the guide on this forum), I noticed three 'Base System Device' under Unspecified, together with one icon saying 'SH Host Controller'. They had a warning sign on them, and after troubleshooting and installing CardReader_J_Micro_V1. the little yellow warning sign disappeared from all of them.

I don't know much about this, but are the three 'Base System Device' my USB ports? Anyways, my logitech cordless mouse is using one of the usb ports.

EDIT: Now the entire 'Unspecified' category in Devices and Printers with the three 'base system device' and 'SD host controller' are all gone. No idea why or what happened.
My System SpecsSystem Spec
08 Dec 2009   #3

Windows 7

I fixed that problem with a WDC My Book Home 1TB in Windows 7: (and also in vista as i have a dual boot)

The drive was recognized in computer management and in device manager but no drive letter was allocated while connected with a e-sata cable. computer management > storage > disk management
2.rightclick drive 1 or wathever the number of the WDC drive (which should be basic at this time) 'convert to dynamic disk' should get a drive letter
5.format (warning: all data get lost, but you can download original software from

My System SpecsSystem Spec


 WD MyBook Essentials 2.0 1TB worked - but not anymore

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