ST9100825A Seagate 2.5″ hard drive with a storage capacity of 100GB and featuring a IDE interface. ST9100825A Seagate Momentus 4200.2 100GB 4200RPM ATA-100 8MB Cache 2.5-inch Hard Drive.

All information about the Seagate ST9100825A hard disk drive: technical parameters, failure symptoms, free asked questions, reviews, HDD repair and data recovery.

Seagate ST9100825A Technical Details:

  • Hard Disk Model: SEAGATE ST9100825A
  • Disk Family: Momentus 4200.2 120GB 100825
  • Form Factor: 2.5″
  • Capacity: 100 GB (100 x 1 000 000 000 bytes)
  • Number Of Disks: 2
  • Number Of Heads: 4
  • Rotational Speed: 5400 RPM
  • Rotation Time: 11.11 ms
  • Average Rotational Latency: 5.56 ms
  • Disk Interface: Ultra-ATA/100
  • Buffer-Host Max. Rate: 100 MB/seconds
  • Buffer Size: 8192 KB
  • Average Seek Time: 12.5 ms
  • Width: 69.85 mm (2.75 inch)
  • Depth: 100.2 mm (3.94 inch)
  • Height: 9.5 mm (0.37 inch)
  • Weight: 100 grams (0.22 pounds)
  • Acoustic (Idle): 2.3 Bel
  • Acoustic (Min performance and volume): 2.5 Bel
  • Acoustic (Max performance and volume): 3.0 Bel
  • Required Power For Spinup: 1200 mA
  • Power Required (Seek): 2.4 W
  • Power Required (Idle): 1.2 W
  • Power Required (Standby): 0.36 W
  • Manufacturer: Seagate Technology

Seagate ST9100825A Hard Drives:

ST9100825A Seagate 100GB IDE 2.5 Inch Hard Drive

  • ST9100825A, 5PL, WU, PN 9AH439-020, FW 3.05, Seagate 100GB IDE 2.5″ Hard Drive

Seagate ST9100825A 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

Seagate ST9100825A Data Recovery & HDD Repair:

When it comes to data recovery one of the most common problems Seagate ST9100825A Hard Disk Drive experience is burnt circuit board(PCB). So if you will need to match a replacement PCB, it is important that you note the “Board Number” of your current circuit board in addition to the hard drive’s “Model Number“.

Multiple PCB Number revisions:
100346102, etc.