HTS421240H9AT00 Hitachi 2.5″ hard drive with a storage capacity of 40GB and featuring a IDE interface. HTS421240H9AT00 Hitachi Travelstar 4K120 40GB 4200RPM ATA-100 2MB Cache 2.5-inch Hard Disk Drive.
All information about the Hitachi HTS421240H9AT00 hard disk drive: technical parameters, failure symptoms, free asked questions, reviews, HDD repair and data recovery.
Hitachi HTS421240H9AT00 Technical Details:
- Hard Disk Model: HITACHI HTS421240H9AT00
- Disk Family: Travelstar 4K120
- Form Factor: 2.5″
- Capacity: 40 GB (40 x 1 000 000 000 bytes)
- Number Of Disks: 1
- Number Of Heads: 2
- 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
- Average Seek Time: 11 ms
- Width: 70 mm (2.76 inch)
- Depth: 100 mm (3.94 inch)
- Height: 9.5 mm (0.37 inch)
- Weight: 95 grams (0.21 pounds)
- Acoustic (Idle): 2.4 Bel
- Acoustic (Min performance and volume): 2.6 Bel
- Acoustic (Max performance and volume): 2.6 Bel
- Required Power For Spinup: 400 mA
- Power Required (Seek): 0.8 W
- Power Required (Idle): 0.35 W
- Power Required (Standby): 0.08 W
- Manufacturer: Hitachi Global Storage Technologies
Hitachi HTS421240H9AT00 Hard Drives:
- HTS421240H9AT00, PN 0A26305, MLC DA1440, Hitachi 40GB IDE 2.5″ Hard Drive
Hitachi HTS421240H9AT00 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
Hitachi HTS421240H9AT00 Data Recovery & HDD Repair:
When it comes to data recovery one of the most common problems Hitachi HTS421240H9AT00 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 “Main Controller IC Number (3.5″)” or “White Label Number (2.5″)” of your current circuit board in addition to the hard drive’s “Model Number“.
Multiple Main Controller IC Number revisions:
0A26871, 0A25166, etc.
Multiple Sticker Number revisions:
0A26873 DA1289_, 0A26789 DA1187B, etc.