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Though this isn't the answer, you've given me some ideas to try few USB memory sticks which both worked....finally, I connected the external USB hard disk,....VOILA...the bluddy thing showed up.<br />
<br />
I don't know WHY I have to do the above sequence of tasks, but it worked...that's all I'm interested....cheers.
</div>


Though this isn't the answer, you've given me some ideas to try few USB memory sticks which both worked....finally, I connected the external USB hard disk,....VOILA...the bluddy thing showed up.

I don't know WHY I have to do the above sequence of tasks, but it worked...that's all I'm interested....cheers.

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<div class="content wysiwyg-content">
Hi,<br />
<br />
I bought a USB Hub with power adapter which has multiple ports.<br />
<br />
After connecting it to my pc, plugged my USB external hard disk into the USB Hub, the USB drive letter that is linked to the USB external hard disk, appears as drive F then suddenly disappears. WHY is that?<br />
<br />
But, if I unplug the USB Hub, then connect my USB external hard disk to the pc, the drive F appears permanently. Further, from computer management, the USB Hub is present under the USB controllers .<br />
<br />
<br />
I'm running Windows 7.<br />
<br />
<br />
Appreciate any help.
</div>
</div>


Hi,

I bought a USB Hub with power adapter which has multiple ports.

After connecting it to my pc, plugged my USB external hard disk into the USB Hub, the USB drive letter that is linked to the USB external hard disk, appears as drive F then suddenly disappears. WHY is that?

But, if I unplug the USB Hub, then connect my USB external hard disk to the pc, the drive F appears permanently. Further, from computer management, the USB Hub is present under the USB controllers .


I'm running Windows 7.


Appreciate any help.

Appear then Disappearing USB Hub

Storage devices include any device used for storing and retrieving digital information. Hard disk drives (HDDs) use one or more rigid ("hard") rapidly rotating disks (platters) coated with magnetic material. Data is accessed in a random-access manner, meaning that individual blocks of data can be stored or retrieved in any order and not only sequentially. The primary competing technology for secondary storage is flash memory in the form of solid-state drives (SSDs), but HDDs remain the dominant medium for secondary storage due to advantages in price per bit and per-device recording capacity. CD-RW (Compact Disc-ReWritable) is a digital optical disc storage format that allows information to be stored outside the mechanical HDD.

Storage Hardware

Computer data storage, often called storage or memory, is a technology consisting of computer components and recording media used to retain digital data. In addition to local storage devices like CD and DVD readers, hard drives and flash drives, solid state drives can hold enormous amounts of data in a very small device. Cloud services and other new forms of remote storage also add to the capacity of devices and their ability to access more data without building additional data storage into a device.

Storage

Windows 7 is an operating system from Microsoft. Features include multi-touch support, a redesigned Windows Shell with a new taskbar, referred to as the Superbar, a home networking system called HomeGroup, and performance improvements.