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#21
1. Unzip fjerase.zip to a folder.
2. Unzip fjdt_700.zip to the same folder.
You will see the following files in that folder. ( Read the Readme files there)
3. Create your bootable DOS pendrive as detailed in my post #16 above.
4. Copy the files fjerase.exe and FJDT.EXE to the pendrive and then it should look like this.
5. Plug in the pendrive to your laptop, invoke the one-time bootmenu and boot from this pendrive.
6.At the C prompt type fjerase.exe and press enter key. C:\>fjerase.exe [ENTER] . As detailed in the readme file it will proceed to find all the drives in your machine. Use the up/down arrows to highlight your Toshiba drive and hit F4 to erase it.
7.To run the drive diagnostics, at the C prompt type FJDT.EXE and press enter key. C:\>FJDT.EXE [ENTER] (Do the comprehensive test.)
( My DOS is rusted.:) Other experts may please chip in and correct if there is anything wrong. Since I do not have a Toshiba drive, I could not run these and test personally. OP may try. No harm.:))