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Hard Drive Data Recovery

Toshiba MQ01 Data RecoveryMQ01ABD100 / MQ01ABD050 / MQ01ABF050

Toshiba MQ01 drives were among the most common laptop hard drives. Head failure is the primary issue, with G-list and translator corruption accounting for approximately 90% of firmware cases per recovery industry data. We recover Toshiba MQ01 drives using our PC-3000 system's Toshiba module at our Austin lab.

Louis Rossmann
Written by
Louis Rossmann
Founder & Chief Technician
Updated February 2026
5 min read

Toshiba MQ01 Specifications

Toshiba MQ01 drives were among the most common laptop hard drives. Head failure is the primary issue, with G-list and translator corruption accounting for approximately 90% of firmware cases per recovery industry data.

Manufacturer
Toshiba
Form Factor
2.5"
Spindle Speed
5400 RPM
Interface
SATA
Capacity Range
500GB-1TB
Recording Technology
CMR (Conventional Magnetic Recording)
PC-3000 Module
Toshiba

Recovery Feasibility

PC-3000 Supported
Standard Head Swap

MQ01ABD100 (4 heads) can potentially donate to MQ01ABD050 (2 heads) with lower magnet swap and upper ramp cutting.

Model Numbers

The following model numbers belong to the Toshiba MQ01 family. Check the label on your drive to confirm it matches one of these models before referencing the failure modes below.

MQ01ABD100MQ01ABD050MQ01ABF050MQ01ABF050H

4 models in this family

Failure Modes

Each failure mode requires a different diagnostic approach and recovery technique. Identifying the correct failure is the first step before any work begins.

Head failure

Head failure most common. MQ01ABD100 has 4 heads, MQ01ABD050 has 2 heads.

Symptoms you may notice

  • Clicking sound
  • Drive not detected
  • Laptop not booting

Related search terms

Toshiba MQ01 clickingMQ01ABD100 head failureToshiba laptop drive recovery

G-list and translator corruption

~90% of firmware issues. MQ01ABF050H 'SB' version has specific firmware defects.

Symptoms you may notice

  • Drive not detected in BIOS
  • Wrong capacity
  • Drive stays busy

Related search terms

Toshiba MQ01 firmwareMQ01ABD100 not detectedToshiba firmware corruption

Head Swap and Donor Matching

Donor Requirements

MQ01ABD100 (4 heads) can potentially donate to MQ01ABD050 (2 heads) with lower magnet swap and upper ramp cutting.

We maintain a donor drive inventory at our Austin lab and can source additional donors when needed. Head swaps are performed in our ISO Class 5 clean bench environment.

Recording Technology

This drive uses Conventional Magnetic Recording (CMR). Each track is independent, making sector-by-sector imaging more predictable than SMR drives. Write operations do not affect adjacent tracks.

CMR simplifies recovery because there is no media cache layer to reconstruct. The data layout on the platters directly mirrors the logical block addresses.

How We Recover Toshiba MQ01 Drives

Firmware-Level Recovery

We use the PC-3000 with the Toshiba module for firmware diagnostics and repair. This handles translator corruption, service area damage, and firmware boot failures.

Firmware recovery preserves the original head assembly and avoids the risks of a donor swap. For Toshiba MQ01 drives with firmware corruption, this is the first recovery path we attempt.

Head Swap Recovery

When the heads have physically failed (clicking, grinding, or no spin), we perform a head swap in our ISO Class 5 clean bench environment. This involves sourcing a compatible donor drive, removing its head stack assembly, and transplanting it into the patient drive.

After the head swap, we image the drive sector by sector using the PC-3000, skipping unstable areas and returning to them with adjusted read parameters. The goal is a complete clone before the donor heads degrade.

Pricing

Logical and firmware recovery for Toshiba MQ01 drives typically costs $300 to $600. Head swap cases requiring a donor drive run $600 to $1,500 depending on head count and donor availability. Clean bench platter work, when needed, is $1,200 to $2,000.

See our full pricing breakdown for details. Our No Data, No Fee guarantee means you pay nothing if we cannot recover your files.

Hard Drive Data Recovery Standards & Verification

Our Austin lab operates on a transparency-first model. We use industry-standard recovery tools, including PC-3000 and DeepSpar, combined with strict environmental controls to make sure your hard drive is handled safely and properly. This approach allows us to serve clients nationwide with consistent technical standards.

Open-drive work is performed in a laminar-flow bench filtered to 0.02 µm, verified using TSI P-Trak instrumentation.

Transparent History

Serving clients nationwide via mail-in service since 2008.

Media Coverage

Our repair work has been covered by The Wall Street Journal and Business Insider, with CBC News reporting on our pricing transparency. Louis Rossmann has testified in Right to Repair hearings in multiple states and founded the Repair Preservation Group.

Aligned Incentives

Our "No Data, No Charge" policy means we assume the risk of the recovery attempt, not the client.

LR

Louis Rossmann

Louis Rossmann's well trained staff review our lab protocols to ensure technical accuracy and honest service. Since 2008, his focus has been on clear technical communication and accurate diagnostics rather than sales-driven explanations.

We believe in proving standards rather than just stating them. We use TSI P-Trak instrumentation to verify that clean-air benchmarks are met before any drive is opened.

See our clean bench validation data and particle test video

Frequently Asked Questions

How do the head counts differ between MQ01 models?
The MQ01ABD100 (1TB) uses 2 platters with 4 heads. The MQ01ABD050 (500GB) uses 1 platter with 2 heads. This matters for donor sourcing: an MQ01ABD100 can potentially donate heads to an MQ01ABD050 with a lower magnet swap and upper ramp cutting, but not the reverse. We verify head count and preamp compatibility before any swap.
What is G-list corruption on Toshiba MQ01 drives?
The G-list (Growth Defect List) tracks bad sectors that developed after manufacturing. When this list corrupts, the drive's firmware cannot properly map around defective areas, causing the drive to report wrong capacity, stay in a BSY state, or fail to appear in BIOS entirely. G-list and translator corruption account for approximately 90% of MQ01 firmware cases we handle. We repair these using the PC-3000 Toshiba module.
What is the MQ01ABF050H 'SB' version firmware problem?
The MQ01ABF050H with 'SB' firmware revision has specific firmware defects that differ from the standard MQ01ABF050. The SB version requires a different approach in PC-3000 and specific donor firmware. We check the firmware revision label on the drive before selecting the repair procedure to avoid applying the wrong fix.
Can MQ01ABD100 heads be used as donors for MQ01ABD050?
In some cases, yes. The MQ01ABD100 has 4 heads and the MQ01ABD050 has 2 heads. We can use the lower head pair from an ABD100 to replace the heads in an ABD050 by swapping the lower magnet and cutting the upper ramp. This is not always compatible and depends on matching the preamp version and manufacturing date. We verify compatibility before attempting the swap.
How much does Toshiba MQ01 laptop drive recovery cost?
Firmware repair (G-list corruption, translator issues, BSY state, wrong capacity) is $300-$500. Head swap recovery (clicking, not detected, dropped laptop) is $500-$800. If we recover no data, there is no charge.

Not a hard drive issue? We also recover SSDs, RAID arrays, and iPhones.

Hard Drive Recovery Overview →

Nationwide Mail-In Data Recovery Service

We serve all 50 states with secure mail-in data recovery. Ship your failed drive to our Austin lab using our free shipping kit, and we'll diagnose it within 24-48 hours. No geographic limitations—we've successfully recovered data for customers from Alaska to Florida.

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