What was the average hard drive size in 1997?

In 1997, the average hard drive size for desktop computers was around 2-4 GB. This was a time when hard drives were transitioning from the megabyte to the gigabyte era. Let’s take a closer look at the history and trends in hard drive sizes during this transitional period.

The Megabyte Era

For most of the 1980s and early 1990s, hard drives for personal computers were measured in megabytes (MB), with sizes typically ranging from 10MB to 200MB. In the late 1980s, high-end PCs might come with hard drives up to 500MB or even 1 gigabyte (GB), but these larger drives were expensive and not common in average consumer systems.

Here are some examples of typical hard drive sizes during the late megabyte era:

  • 10-40 MB – Low-end/budget systems
  • 40-100 MB – Mainstream consumer-level PCs
  • 100-200 MB – High-end consumer PCs
  • 200-500 MB – Professional workstations, servers

So in the early 1990s, having a hard drive over 100MB was still considered quite large for the average home computer user. But rapid growth in storage technology meant change was coming quickly.

The Transition to Gigabytes

In the mid-1990s, hard drive sizes started to cross over from megabytes to gigabytes. This was made possible by advances like PRML technology and magnetoresistive heads, allowing drive densities to grow exponentially. Hard drives with capacities over 1 GB started to become more common and affordable in desktop PCs.

Here are some milestones in the transition to gigabyte drives:

  • 1993 – First IDE hard drive over 1 GB (Conner Peripherals 1.2GB drive)
  • 1995 – Quantum Bigfoot TS 1.2 GB drive released, priced under $300, targeted at mainstream desktops
  • 1996 – Most new desktop PCs shipped with hard drives in the 1-2 GB range
  • 1997 – Average desktop PC hard drive around 2-4GB

So by 1997, the average hard drive size in a new desktop computer purchased that year was likely to be somewhere between 2-4 GB. High-end home and business computers may have had hard drives up to 6-8 GB, while budget systems could still have hard drives around 1 GB.

Why 2-4 GB was the 1997 Average

There are a few key reasons why the average hard drive capacity for desktop PCs landed in the 2-4 GB range by 1997:

  • OS and software growth – Operating systems like Windows 95/98 and office suites took up increasing amounts of hard drive space.
  • Multimedia adoption – Multimedia capabilities caused applications and files like digital photos and digital music to balloon in size.
  • Internet adoption – Web browsers, email, and internet connectivity fueled demand for storage capacity.
  • Falling prices – Gigabyte drives became affordable for mainstream desktops as production ramped up.

Basically, throughout the 90s, computers were being used for more and more data-intensive applications. Average consumers suddenly needed gigabytes of space rather than megabytes. And with prices dropping rapidly, that amount of storage could finally fit into a typical household’s PC budget.

The State of the Hard Drive Market in 1997

Here’s an overview of the hard drive landscape and major manufacturers in 1997:

  • Industry consolidation – Major acquisitions left Seagate, Western Digital, and IBM/Hitachi as the largest hard drive makers.
  • Technology leadership – IBM’s Deskstar drives often led in capacity and density.
  • Market dominance – Seagate shipped 29% of all drives and earned $7 billion in revenue.
  • Client drives – Average desktop PC drives moved to ~5,400 RPM spindle speeds.
  • Enterprise drives – High-performance SCSI drives at 10,000+ RPM speeds were popular for servers.

While the average desktop computer had a 2-4 GB hard drive, the cutting edge of drive technology was always ahead of the mainstream. In 1997, the maximum hard drive capacities reached were around 9 GB for IDE/ATA drives and 18 GB for SCSI drives. This foreshadowed the continued rapid growth in capacities over the next decade.

Largest Hard Drive Sizes in 1997

Here were some of the largest HDD capacities available for desktop PCs and servers in 1997, representing the top end of the market:

Company Drive Model Type Capacity
IBM Deskstar 16GP IDE/ATA 8.4 GB
Seagate Medalist Pro 7170 SCSI 8.4 GB
Western Digital AC310000H SCSI 9 GB
Micropolis MC4221 SCSI 18 GB

These drives were not cheap – often costing well over $1,000. But they showed the rapid pace of advancement in HDD technology at the time.

Factors Driving Hard Drive Growth

Several technology factors drove the exponential growth in hard drive capacities during the 1990s transition to gigabyte-sized drives:

  • MR heads – Magnetoresistive heads enabled much higher densities than earlier inductive head technology.
  • PRML – Partial-response maximum-likelihood signaling enabled improved signal processing and noise management.
  • Data recording – New thin-film media allowed more dense data recording on disk platters.
  • Disk and head design – Innovations like giant magnetoresistive (GMR) heads and glass platters pushed areal densities higher.
  • Error correction – More advanced error checking and correction helped minimize defects.

Together, these kinds of advances enabled hard drive areal densities to rise at an annual rate of 60% in the early 1990s. This pushed capacities from hundreds of megabytes into the gigabytes within just a few years.

The Road to Gigabyte Hard Drives

The journey to the first 1 GB hard drives stretched back over a decade of incremental technological improvements:

  • 1983 – Rodime RO352 (10 MB)
  • 1986 – Seagate ST225 (20 MB)
  • 1988 – Conner CP340 (44 MB)
  • 1991 – Quantum ProDrive LPS (525 MB)
  • 1992 – Western Digital Caviar AC2120 (1 GB)
  • 1993 – Seagate Barracuda 1 (1.2 GB)

Each new capacity milestone was a combination of squeezing more bits per square inch on the platters, increasing platter sizes, and adding more platters to the drive. But the production challenges grew with each advance, requiring complex manufacturing and expensive components.

Declining Costs Per Megabyte

While capacities increased rapidly through the 1980s and 1990s, just as important was the dramatic drop in cost per megabyte of storage. Some examples:

  • 1983 – $10 per megabyte (10 MB drive for $100)
  • 1989 – $1 per megabyte (100 MB drive for $100)
  • 1996 – 10¢ per megabyte (2 GB drive for $200)

This made once-unfathomable amounts of data storage affordable for mainstream desktop computer buyers. It was a key enabler driving the adoption of gigabyte-sized hard drives in the mid-1990s as the new norm.

The Mass Market Arrives

A major milestone was reached in 1996-1997 as sub-$1,000 PCs with hard drives over 1 GB hit the mass market sweet spot. Some examples:

  • 1996 – Compaq Presario 2500 (1.2 GB drive, $1999 MSRP)
  • 1996 – eMachines 333i (1.6 GB drive, $999)
  • 1997 – Apple PowerMac G3 (2 GB drive, $1599)
  • 1997 – Dell Dimension XPS D233 (3.2 GB drive, $2299)

This period represented a shift from gigabyte drives being limited to high-end systems, to being the new standard across entry-level, mid-range, and performance PCs. The fast growth of hard drive capacities finally aligned with mainstream price points.

The Future Arrives

Of course, the rapid innovation continued well beyond 1997. Just a few years later, new milestones like these were reached:

  • 1998 – IBM Deskstar 75GXP (12 GB)
  • 2000 – Seagate Barracuda ATA IV (20 GB)
  • 2001 – Maxtor DiamondMax D540X (40 GB)

And not long after that, the gigabyte gave way to the terabyte. But 1997 represented a major inflection point, when gigabyte hard drives completed their transition from niche luxury to everyday standard component. The 2-4 GB average drive sizes seen in 1997 PCs were a reflection of this pivotal transition to the era of massive household data storage.


In summary, the average hard drive size in desktop PCs in 1997 was around 2-4 GB. This represented the culmination of years of rapid capacity growth fueled by innovations in hard drive technology. plummeting costs per megabyte, and exploding consumer demand for multimedia computing power. While state-of-the-art drives were over 15 GB, the 2-4 GB range hit the sweet spot for bringing gigabyte-sized drives into mainstream home and business computers. This key milestone marked the dawn of the era of massive data storage and growing user expectations that followed into the 21st century.