MK4020GLS Toshiba 2.5″ hard drive with a storage capacity of 40 GB and featuring a IDE interface. MK4020GLS TOSHIBA 2.5″ 40 GB Ultra-ATA/100 MK-4020GLS 4200 RPM Hard Drive.

All information about the Toshiba MK4020GLS hard disk drive: technical parameters, failure symptoms, free asked questions, reviews, HDD repair and data recovery.

Toshiba MK4020GLS Technical Details:

  • Hard Disk Model: TOSHIBA MK4020GLS
  • Disk Family: MK-4020GLS
  • Form Factor: 2.5″
  • Capacity: 40 GB (40 x 1 000 000 000 bytes)
  • Number Of Disks: 2
  • Number Of Heads: 4
  • Rotational Speed: 4200 RPM
  • Rotation Time: 14.29 ms
  • Average Rotational Latency: 7.14 ms
  • Disk Interface: Ultra-ATA/100
  • Buffer-Host Max. Rate: 100 MB/seconds
  • Buffer Size: 2048 KB
  • Drive Ready Time (typical): 4 seconds
  • Average Seek Time: 12 ms
  • Track To Track Seek Time: 2 ms
  • Full Stroke Seek Time: 22 ms
  • Width: 69.85 mm (2.72 inch)
  • Depth: 100 mm (3.94 inch)
  • Height: 9.5 mm (0.35 inch)
  • Weight: 99 grams (0.22 pounds)
  • Required Power For Spinup: 940 mA
  • Power Required (Seek): 2.7 W
  • Power Required (Idle): 1.0 W
  • Power Required (Standby): 0.25 W
  • Manufacturer: Toshiba Corp., Storage Device Division

Toshiba MK4020GLS Hard Drives:

  • MK4020GLS TOSHIBA 2.5″ 40 GB Ultra-ATA/100 MK-4020GLS 4200 RPM Hard Drive.

Toshiba MK4020GLS Failure Symptoms:

  • Electrical Failure Symptoms:
    Drive is powered, but shows no sign of function;
    Disk knocking as the motor fails to spin;
    Clicking sound as the heads search or initialize;
  • Mechanical Failure Symptoms:
    Clicking, grinding sounds;
    Completely quiet due to ” motor freeze”;
    “music” tone as the disk is powered up;
  • Logical Failure Examples:
    Accidental deletion, accidental format, file corruption, software bugs, file system corruption, viruses and malware, and many, many more.
  • Firmware Failure Symptoms:
    drive powers up, but is not recognised by the computer;
    Drive powers up, but is recognised wrongly, sometimes with nonsensical characters;
    Drive freezes during booting up;
  • Bad Platter Area Symptoms:
    Hard disk still accessible but appear to “hang” or “sluggish”;
    Constant Cyclic Redundancy (CRC) errors;
    Unable to access folders or files which could be seen;
  • Complex Failure Model

Toshiba MK4020GLS Data Recovery & HDD Repair:

When it comes to data recovery one of the most common problems Toshiba MK4020GLS hard drive experience is a burned circuit board (PCB). Therefore, if you need to replace the PCB, be sure to match the “PCB Number” of the current board, such as etc.