What is make sure that your Hard Drive is set to LBA in bios?


I am unable to start boot my computer, reads"MB Fastrack 133(tm)"title" Bios version Scanning IDE Drives............................................... then it states "array not defined" then it restarts, and it repeats over and over. what do i do? in detail, don't know much about computers.


This question was answered on October 31, 2004. Much of the information contained herein may have changed since posting.

Logical Block Addressing (LBA) Defined

Article ID : 122052

Last Review : December 17, 2000

Revision : 1.0

This article was previously published under Q122052

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Logical Block Addressing (LBA) is a method of accessing hard disk drives This allows IDE disks larger than 504 megabytes (1024 cylinders) in size to be fully partitioned using the MS-DOS fdisk command Prior to this technology, ROM BIOS limitations prevented the fdisk command from using an entire hard disk that was larger than 504 megabytes (MB) in size, except by using other controller ROM routines that effectively translate the hard disk's native geometry


LBA is a run-time function of the system BIOS The BIOS uses LBA for the following commands: read (with and without retries), read verify, read long, write (with and without retries), write verify, write long, read multiple, write multiple, read DMA, write DMA, seek, and format track

As with non-LBA systems, information about the hard disk's true geometry is stored in the system CMOS When reporting information about the hard disk to MS-DOS, however, a system employing LBA essentially depicts a hard disk with fewer than 1024 cylinders and the LBA BIOS performs a translation from the MS-DOS track, head, and sector to logical block numbers used by the drive, allowing the entire disk to be used without special drivers or third- party disk utilities

The LBA standard specifies the following two types of drive parameter tables: • Automatic (recommended for Novell NetWare and Unix)

• Translation (recommended for MS-DOS, Windows, OS/2 2.x, and Windows NT)

The following sections provide information about the use of LBA with various BIOS chip sets, including the specific versions of these BIOS chip sets that support LBA

American Megatrends Inc.

American Megatrends, Inc has confirmed that versions of its BIOS dated 4-25-94 and later are compatible with LBA For more information, contact American Megatrends


Micro Firmware, the sole provider of BIOS upgrades for Phoenix BIOS chip sets, has confirmed that BIOS versions 4.03 and later are compatible with LBA However, various computer and system board manufacturers may be using specific revisions of the version 4.03 BIOS that do not support LBA In these cases, the hardware manufacturer should be contacted for an appropriate BIOS upgrade For more information, contact Micro Firmware

This article refers to products manufactured by vendors independent of Microsoft; we make no warranty, implied or otherwise, regarding these products' performance or reliability


you will need someone with computer experience for this job it requires going into the bios and changing your settings.

restart your computer

press delete to get into bios

change your hard drive settings

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Posted by christopher of Katharine Gibbs School - New York on October 31, 2004