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Is the first a &quot;System reserved&quot; 100-350MB partition by any chance? &nbsp;If so that is a win7/8 system partition that you cannot access.
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Is the first a "System reserved" 100-350MB partition by any chance?  If so that is a win7/8 system partition that you cannot access.

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Assigning a drive letter made the partition accessible... thank you.
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Assigning a drive letter made the partition accessible... thank you.

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You are welcome.<br />
Glad to hear we could assist.<br />
Take care<br />
Nox
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You are welcome.
Glad to hear we could assist.
Take care
Nox

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I have a WD I terabyte hard disk. &nbsp;Somehow it got locked when I was installing Windows 8. The second and third petitions on the disk are working fine and are recognized. But the first partition is locked, and is not recognized.<br />
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Iran Western Digital data lifeguard diagnostics and the disc is identified however &nbsp;it only recognizes the second and third partition.<br />
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Help
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I have a WD I terabyte hard disk.  Somehow it got locked when I was installing Windows 8. The second and third petitions on the disk are working fine and are recognized. But the first partition is locked, and is not recognized.

Iran Western Digital data lifeguard diagnostics and the disc is identified however  it only recognizes the second and third partition.

Help

How to Unlock a WD HDD partition that got locked installing Windows 8

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

This topic area includes legacy versions of Windows prior to Windows 2000: Windows 3/3.1, Windows 95 and Windows 98, plus any other Windows-related versions including Windows Mobile.

Windows OS

Components are those devices that are internal to a computer -- the PC boards, the central processor (CPU), the memory (RAM), disk and video controllers and so on.

Components

WD, a Western Digital company, is a long-time innovator and storage industry leader. As a storage technology pacesetter, the company produces reliable, high-performance hard disk drives and solid state drives. These drives are deployed by OEMs and integrators in desktop and mobile computers, enterprise computing systems, embedded systems and consumer electronics applications, as well as by the company in providing its own storage products. WD’s leading storage devices and systems, networking products, media players and software solutions empower people around the world to easily save, store, protect, share and experience their content on multiple devices. WD was established in 1970 and is headquartered in Irvine, Calif. For more information, please visit the company’s website at www.wd.com.