ST38421A Seagate 3.5″ hard drive with a storage capacity of 8.4GB and featuring a IDE interface. ST38421A Seagate 8.4GB 5400RPM EIDE Internal DMA/ATA 66(ULTRA) 3.5-inch Low Profile (1.0 inch) Hard Drive.
All information about the Seagate ST38421A hard disk drive: technical parameters, failure symptoms, free asked questions, reviews, HDD repair and data recovery.
Seagate ST38421A Technical Details:
- Hard Disk Model: SEAGATE ST38421A
- Disk Family: U4 8421
- Form Factor: 3.5″
- Capacity: 8447 MB (8447 x 1 000 000 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/66
- Buffer-Host Max. Rate: 66.6 MB/seconds
- Buffer Size: 256 KB
- Average Seek Time: 10.5 ms
- Track To Track Seek Time: 2 ms
- Full Stroke Seek Time: 24 ms
- Width: 101.8 mm (4.01 inch)
- Depth: 147 mm (5.79 inch)
- Height: 26.1 mm (1.03 inch)
- Weight: 580 grams (1.28 pounds)
- Acoustic (Idle): 2.7 Bel
- Acoustic (Min performance and volume): 2.9 Bel
- Acoustic (Max performance and volume): 2.9 Bel
- Required Power For Spinup: 2800 mA
- Power Required (Seek): 12.8 W
- Power Required (Idle): 7.20 W
- Power Required (Standby): 0.80 W
- Manufacturer: Seagate Technology
Seagate ST38421A Hard Drives:
- ST38421A, 3BD, AMK, PN 9M9004-030, FW 6.01, Seagate 8.4GB IDE 3.5″ Hard Drive
Seagate ST38421A 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 ST38421A Data Recovery & HDD Repair:
When it comes to data recovery one of the most common problems Seagate ST38421A 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:
SG22573-300, etc.