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mx_tu-0597.pdf
- Maxtor 1997 HD Barriers & Limitations. |
Bios & Windows OS Limitations for
SATA & PATA Hard Drives:
seagate.custkb.com - Storage Capacity Measurement Standards -
Q: Why does my Hard Drive show less space than advertised?
A: Hard Drive Capacity Measurement Standards = Hexadecimal vs. Binary -
Two Different Measurements Systems
What's the simplest Solution for overcoming PATA Hard Drive
Capacity Barriers? Past: Get A Promise PCI Controller Card! IF you can
still find one! See:
www.Promise.com !!! Use to be available from
www.NewEgg.com - For PCI PATA
Controller, Search: Promise Ultra133 TX2. Now... A SATA to PATA
Converter or USB Converter.
Need more Storage Capacity than your MotherBoard allows? Get
another Controller Card! Either of the variety above or this, depending
upon your needs - For PCIe SATA , Search: SIG SATA
Controller. Same location or your preferred Vendor... Enjoy!
Hard drive Capacity Barriers...
Since so many people continue to confuse the issue
and mix disproportionate ATA Storage Technologies including SATA I, II &
III, PATA HD's, PATA
Controller cards and MotherBoard Controllers, we've included the FYI
Info below as a refresher quoting www.Maxtor.com
Tech Bulletins. ATA Controllers are cheap - IF you're in doubt as to
whether your System will support the newer, larger HD's - Get one! And
be particular which PCI Slot you use in case you have a Resource
conflict with your AGP Slot. Using a PCI Express MotherBoard will be
less likely to have this issue. Consult your MotherBoard Manual when in
doubt!
The BIOS limitation or BIOS capacity
barrier is the computer’s inability to recognize hard drive
capacities larger than allowed by the hard-coded programming contained in
your system BIOS. For example, your system BIOS might only be capable of
understanding a hard drive capacity of up to 32 GB. If you then attempt to
install and auto-detect a 40 GB hard drive, the system will freeze because
the BIOS is not capable of understanding the capacity reported by the hard
drive. In short, that particular BIOS cannot count past 32 GB.
-
Seagate.custkb.com - Definition of a BIOS Limitation or BIOS Capacity
Barrier 137 GB, 32 GB, 8.4 GB
- WDC.custhelp.com
- Operating System and BIOS Limitations: 137 GB, 32 GB,
8.4 GB
- www.dewassoc.com
- Hard Drive Size Barriers, In Depth:
Seven Major BIOS Limitations:
- Systems with BIOS dated prior to July 1994
(504 MB {binary} / 528 MB {decimal} Limitation).
Typically these BIOS will have a 504 MegaByte (1,024 cylinder)
limitation. Prior to this date, most MotherBoard Manufacturers' BIOS
did not provide the Logical Block Address (LBA) feature needed for
proper translation. Some BIOS had LBA mode in the Bios Setup, but the
feature did not work properly.
- 126855
- Windows Support for Large IDE Hard Disks:
- 122052
- Logical Block Addressing (LBA) Defined: LBA is a run-time
function of the system BIOS.
- Systems with BIOS dated after July of 1994
(2.048 GB Limitation).
Typically, these BIOS provide support for HD Drives with capacities
larger than 504 MegaBytes. However, depending on the Manufacturer's
release date and version number, different limitations may be
encountered. The major limitation is the 4,093-4,096 cylinder
limitation. This barrier is derived from the fact that some BIOS
Manufacturers implemented Logical Block Addressing (LBA) translation
in their BIOS with a 4,093 - 4,096 cylinder limitation. System hangs
would occur when the cylinder limitation threshold is exceeded. A
System hang is defined when the Operating System hangs during initial
loading, either from Floppy Diskette or
existing HD Drives. If these symptoms of System hang occur or there
are questions whether the system BIOS will support the HD Drive,
contact the System or MotherBoard Manufacturer for assistance.
- 127851
- Problems Accessing FAT16 Drives Larger Than 2 GB:
- DOS - The
DOS operating system has a 2.048 GB per drive letter (e.g., C:,
D,: E:) barrier, also has an 8.4 GB total drive capacity barrier.
- Windows 95A (FAT-16)
- The Windows 95 (FAT 16) operating system has a 2.048 GB per
drive letter barrier. See: Win9x Versions.
- OS/2 using FAT-16
- The OS/2 using FAT 16 operating system has a 2.1 GB per
drive letter barrier. Older versions of Warp cannot address drive
capacities greater than 4.2 GB. User's MUST contact IBM for
possible Driver Pack Upgrades to bypass this limitation.
- 4.2 GB Limitation (FAT16).
The maximum parameters at the 4.2 GB barrier are 8,190 cylinders, 16
heads and 63 sectors for a capacity of 4.2 GB. A system hang is
defined when the Operating System stops responding during initial
loading, either from Floppy Diskette or existing Hard Drives. This can
be caused by the BIOS reporting the number of heads to the operating
system as 256 (100h). The register size DOS/Windows 95 uses for the
head count has a capacity of two hex digits. This is equivalent to
decimal values 255. If these symptoms of system hang occur or there
are questions whether the system BIOS will support the drive, contact
the system or motherboard manufacturer for assistance.
- 118335
- Maximum Partition Size Using FAT16 File System:
- Windows NT 4.0
using FAT-16 - Windows NT 4.0
using FAT 16-File System has a 4.2 GB limit. Hard drives greater
than 4.2 GB will require multiple partitions if using the FAT 16
File System.
- 8.4 GB Limitation - January 1998.
The maximum parameters at the 8.4 GB barrier are 16,383 cylinders, 16
heads and 63 sectors for a capacity of 8.455 GB. To go beyond this
boundary, a new extended INT 13 function [extended BIOS functions] is
needed from the BIOS as a support feature for the drives. Even though
a BIOS is dated correctly or is the current version, it may not be
able to support extended interrupt 13 because of modification done to
the "CORE" of the BIOS from the MotherBoard Manufacturer.
- 153550
- Hard Disk Limited to 8-GB Partition: "This behavior can
occur if the Hard Disk Controller does not fully support the
interrupt 13 extensions. This information applies to both IDE and
SCSI hard disk drives."
- 197667
- Installing Windows NT on a Large IDE Hard Disk:
- 32 GB Limitation - June 1999.
This condition is caused by the Award BIOS inability to address HD
Drives greater than 32GB. Award has been made aware of this issue and
has fixed their "core" BIOS as of 6/99. They are
passing this information along to the MotherBoard Manufacturers' using
their BIOS. Updates for the BIOS should be available soon from
individual MotherBoard Manufacturers' to correct this problem. The
following are options to overcome the 32 GB BIOS capacity barriers:
- Please contact your Motherboard
Manufacturer, not Award, for a BIOS Update.
[1st! Most
Motherboard Manufacturers have Free Bios Updates. Take advantage
of that feature!]
- (Recommended) Purchase a PCI ATA Controller
card that will support the capacity of the drive. The two benefits
of ATA controller cards are: (1) the ability to support large
capacity drives and (2) the ability to support the faster transfer
rates of the drive. Maxtor's online store, www.MaxStore.com,
has a complete selection of ATA Controller cards that support the
full capacity of all Maxtor drives. [Or... www.Promise.com
- Get a Promise Parallel ATA Controller Card. Safer and simpler in
the long run!]
- Or Maxtor's MaxBlast
3 "Set Drive Size" utility. Please reference Answer
ID: 1361.
- 64 GB Limitation
There is no 64 GB BIOS Capacity Barrier. If you use FDISK to format a
drive that is larger than 64 GB, FDISK will report the incorrect disk
size. Please refer to Answer
ID 775 for a resolution. [Get the fdisk Update - Read:
Win9xVer]
-
Q263044
- Fdisk Does Not Recognize Full Size of
Hard Disks Larger than 64 GB -
FAT32 Partitions
"NOTE: This hotfix is not designed for 48-bit
logical block addressing (LBA) Hard Disks, and is not supported on
Hard Disks larger than 137 GB."
- 137 GB (128 GB binary) Limitation - October
29, 2001.
Most system BIOS's are limited to 137 GB because it can only support 28
bit Logical Block Addressing (LBA). For a resolution please
refer to Answer
ID 960.
- 303013
- How to Enable 48-bit Logical Block Addressing Support for ATAPI
Disk Drives in Windows XP: (12/26/2003)
- You must have a 48-bit LBA compatible BIOS.
- You must have a hard disk that has a capacity that is
greater than 137 GB.
- You must have Windows XP SP1 installed.
-
305098 - 48-Bit LBA Support for ATAPI Disk Drives in Windows 2000:
Applies to Win2000 Pro, Server & Advanced Server.
- 327202 - PRB
BIOS May Limit Fdisk.exe When Partitioning Hard Disks Larger Than
128 GB: Update System Bios if
possible. "IDE Hard Disk Dives larger than 128 GB use 48-bit
logical block addressing (LBA) as defined in the ATA/ATAPI-6
Specification." See also: Win9x
Versions for fdisk Update Info.
- Promise's
New Ultra133 TX2 Controller Card Supports Maxtor's Fast Drive And
Big Drive Technology: (October 29, 2001).
- Maxtor
Big Drive Enabler: "A one step executable enabling
support for drives larger than 137 Gigabytes in Windows 2000
Service Pack 3 and XP Service Pack 1. This utility takes the guess
work out of editing the Windows registry. The Big Drive Enabler
fixes an Operating System limitation. This utility is needed
anytime a Hard Disk Drive larger than 137 GB is connected to the
motherboard's ATA bus, regardless of any system BIOS supporting
48-bit LBA."
- www.seagate.com
- Why can I only see 127 to 137 GBytes of my 160+ GB drive
- Quoting: maxtor.custhelp.com
- Online Help Answer:
The Windows 137GB (137.4 GB) Capacity
Barrier a.k.a. 48-bit Logical Block Addressing (LBA)
Support for ATA/ATAPI (IDE) & Serial
ATA HD Drives. The 137GB limitation does not affect SCSI
Interface HD Drives.
ATA/ATAPI-6 defines 48-bit addressing on a single drive,
allowing more than 144 Petabytes (144,000,000 Gigabytes) of
Storage.
- Intel
Application Accelerator - 48-bit LBA BIOS Support:
Instructions for Win2000 & WinXP flavors differ from
Instructions for Win98 flavors.
- Intel
Application Accelerator - Large Hard Drive Installation
Instructions: Although No fault on Intel, Catch 22 for Users
with Sony DVD Burners since Sony says this
Driver must be removed to Flash the Sony DVD Burner (Sony
DRU-500A/X /DRX-500UL/X Firmware Update). Smart?!? Storage
Growing Pains... Users Be Aware!
- 327202
- PRB BIOS May Limit Fdisk.exe When Partitioning Hard Disks Larger
Than 128 GB: "Fdisk.exe is limited to the disk capacity
as reported by the BIOS." Relates to: Win98
flavors.
- 48bitLBA.com
- EnableBigLBA: A better alternative solution to Maxtor's Big
Drive Enabler since in WinXP Pro + SP1.
- Next Limit... 2.2 terabytes (2,200 gigabytes).
According to Maxtor, "This barrier exists because many of today's
Operating Systems are based on 32-bit addressing. Windows XP/64-bit
also has the limit because of leveraged 32-bit code."
Update from www.3Ware.com:
RAID, Beyond the 2TB Barrier -
"The current AMCC Storage 9000 series controllers support [RAID]
array greater than 2TB. However, not all Operating Systems support array
sizes great than 2TB. Under Linux, use the "parted" tool to create
arrays of greater than 2TB. Current releases of the Windows Operating
System do not support greater than 2TB. If an array of 3TB is selected,
the current version of Windows will recognize and format the first 1.99
(2TB) of storage space. Windows 2003 is still in beta. It is yet to [be]
seen if Windows 2003 will provide more than 2TB support in its final
release. The 3Ware firmware will support 64-bit LBA, which will satisfy
the array capacity requirements up to 9 zettabytes. 264x512 bytes =
9,444,732,965,739,290,427,392 bytes." (6/4/2004)
Same issue according to Microsoft... Details on
FAT Chart: Maximum
Volume Size - "Volumes larger than 2 terabytes (TB) are
possible by using 64KB clusters to achieve a 256TB volume. Volumes
larger than 2TB must be dynamic, not basic." Read it twice. Both are
correct.
Analogue Number Perspectives from
www.Maxtor.com:
- 131 kilobytes = 131,000
bytes a little more than 30 pages of text.
- 33 megabytes = 33,000,000
bytes more than 8,000 pages of text or 25 300-page books.
- 137 gigabytes =
137,000,000,000 bytes more than 100,000 books, or the contents of
a good library.
- 2.2 terabytes =
2,200,000,000,000 bytes almost 2,000,000 books, or about the
content of the Library of Congress. [In 2011 we now have 3 TB
HDs.]
- 144 petabytes =
144,000,000,000,000,000 bytes 120 billion books (more than all
that man has written).
- Etabyte = 1024
Petabytes
- 9.4 zettabytes =
9,400,000,000,000,000,000,000 bytes.
-
www.microsoft.com - Hard Disk Drive Capacity Limitations on Serial ATA:
Updated: July 18, 2003
"The ATA command set support in a driver limits the addressable
hard disk drive capacity. Because both Serial ATA and parallel ATA
connections use the ATA commands, both Serial ATA and parallel ATA
have the same capacity limitations.
Drivers that use the 28-bit logical block addressing (LBA) ATA
commands are limited to 137 gigabytes (GB). Drivers that use
the new 48-bit LBA ATA commands are limited to
144 petabytes (PB)."
-
microsoft.com/whdc -
Windows and GPT FAQ Version 1.1 Posted: May 3, 2006; Updated: July
8, 2008; Updated: June 15, 2011
"The maximum partition (and disk) size is a function of the operating
system version. Windows XP and the original release of Windows Server
2003 have a limit of 2TB per physical disk, including
all partitions. For Windows Server 2003 SP1 Windows XP x64 edition, and
later versions, the maximum raw partition of 18 exabytes can be
supported. (Windows file systems currently are limited to 256
terabytes each.)"
-
A [Motherboard] BIOS [Firmware] uses a
Master Boot Record (MBR).
-
MBR can only support up to 4 partitions and up to 2TB per
partition.
-
EFI (Extensible Firmware Interface) supports legacy MBR + GPT
(GUID Partition Table).
-
GPT does not have the MBR limitations. UEFI is the successor to
the Bios. Plus an EFI-aware O/S defined by EFI spec. See: Intel.com:
Specification Overview or Unified
Extensible Firmware Interface (UEFI) websites respectively
(1/19/2009)
-
msdn.microsoft.com - Windows and GPT FAQ: 3 TB HDs & Windows
Updated: June 15, 2011 (8/11/2011)
"GUID Partition Table (GPT) introduced as part of Unified Extensible
Firmware Interface (UEFI) initiative. GPT provides more flexible
mechanism for partitioning disks than previous Master Boot Record (MBR)
partitioning scheme on PCs."
-
"Q. Can Windows 7, Windows Vista, and Windows Server 2008
read, write, and boot from GPT disks?
A. Yes, all versions can use GPT partitioned disks for
data. Booting
is only supported for 64-bit editions on UEFI-based systems."
-
WDC - Large Capacity Drives
http://products.wdc.com/largecapacitydrives
"Technological Challenges of 3 TB SATA Hard Drive implementation.
Required: Advanced Host Controller Interface (ACHI)-compliant HBA
(Host Bus Adapter) with supporting Chipset & Drivers."
-
Hitachi
Global Storage Technologies - Above 2TB -
"As a Boot Drive ...a Windows boot drive requires
an EFI (Extensible Firmware Interface) BIOS and a 64-bit version of
Windows Vista or Windows 7. Linux does not require an EFI BIOS."
-
technet.microsoft.com - Change a Master Boot Record Disk into a GUID
Partition Table Disk - Applies To: Windows 7
"GPT is required for disks larger than 2 terabytes; You can change a
disk from MBR to GPT partition style as long as disk does not
contain any partitions or volumes."
-
UEFI - UEFI Specifications and
Tools
-
support.microsoft.com
- Frequently asked questions about the GUID Partitioning Table disk
architecture
GUID (globally unique identifier)
"The GUID Partition Table disk architecture was introduced as part
of the Extensible
Firmware Interface initiative. GUID Partition Table is a new disk
architecture expanding
on the older Master Boot Record (MBR) partitioning scheme common to
x86 - based computers.
GUID Partition Table disks can grow to a very large size. As
of July 2001, the Microsoft
implementation supports a hard disk of up to 18 EB (512 KB LBAs)."
[Etabyte = 1024
Petabytes]
-
support.microsoft.com - An update that improves the compatibility of
Windows 7 and Windows Server 2008 R2 with Advanced Format Disks is
available
-
WDC.com - Product Features - Large Capacity Drives
- Meeting the technological challenges of 3 TB SATA hard drive
implementation.
-
msdn.microsoft.com - Using GPT Drives - "A GPT disk uses the
GUID partition table (GPT) disk partitioning system.
Highlighted Benefits include:
-
Allows a much larger partition size--greater than 2 terabytes
(TB) - Limit for MBR disks.
-
Provides greater reliability due to replication and cyclical
redundancy check (CRC) protection of partition table."
-
Considering a GPT Disk Manager?
PARAGON Software
Group - Hitachi GPT Disk Manager
-
Paragon Drive Copy - Professional Hard Disk Copy, Disk
Cloning and System Migration - deploy new hard drive easily!
"Drive Copy - MBR OS migration to Retained GPT (also
known as Hybrid GPT) drives."
-
Current Limit... Largest Desktop HD Available =
3TB as of 8-11-2011 - Keep It Simple - EFI Bios!
-
Installing 3TB HDs
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