Seagate Hard Drive Structure

Seagate hard drives has almost the similar basic structure with Maxtor hard drives. The only difference is the way to access to the firmware area. The two serial bus pins of the jumper ports of Seagate hard drives are used to transfer data and repair damaged hdd. That’s to say, if you want to repair Seagate hard drives, you need to use professional COM cables.

The FW of Seagate is also stored in the negative tracks before track 0, we call it also SA tracks and the detailed location is marked in Hex and these tracks are accessed by COM cable. Within our hdd repair work, we usually use three main modules and they are ATA module, CERT module and VEN module.

Seagate HDD Repair Commands

The following are some common Seagate HDD repair commands you may use within your repair work, any way, you need to use some professional hdd repair tools offering command repair mode:

A level selfrepair command: T>, enter N4,22, Click ‘Enter’, Click CTRL+T and the A level selfrepair mode is loaded;
B level selfrepair command: T>, enter N3,22, click ‘Enter’, Click CTRL+T and the B level selfrepair mode is loaded;
A level selftest command: T>, enter N2,22, Click ‘Enter’, Click CTRL+T and the A level selftest mode is loaded;
B level selftest command: T>, enter N2,AA,22, click ‘Enter’, click CTRL+T and the B level selftest is loaded;
Factory bad sectors repair command: T>, enter N30,22, click ‘Enter’, click CTRL+T and the factory bad sector repair mode is loaded;
Stop Selftest Command: T>, enter N50,22, click ‘Enter’, then the hdd selftest is stopped;
Inner orbit format command: T>, enter I,22, click ‘Enter’ and the format begins;
Disable heads commands for K4, K5 and K6: T>, enter YA0, click ‘Enter’ and disable the damaged heads;
Disable heads commands for K7: T>, enter Y20, click ‘Enter’ and disable the damaged heads.