Tutorial: How to convert HDD1.5 image to emulator friendly format and vice versa

Started by eidis, June 21, 2014, 01:20:43 AM

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eidis

  Hi Guys !

This tutorial will explain how to convert RAW PC-98 HDD dump file to Anex86 HDI format. You will need the following things.

RobIvy64's and Caius's PC-98 HDD image v1 or v1.5

Anex86 HDI header file which is attached to this post.

HxD hex editor
http://mh-nexus.de/en/hxd/

Foreword:

The attached header file needs RAW image with a fixed size of 1 215 287 296 bytes, otherwise it will not work. This was the closest size which I could get to the original 1 215 299 584 bytes.

The procedure:

Converting to Anex68 image
====================
Open "PC98HDDV1_5.ima" in HxD
Select "Search->Goto" and enter 486FCFFF
Select and delete everything that is after that offset
Open header in HxD, select all its contents with CTRL+A, press CTRL+C
Switch to "PC98HDDV1_5.ima", goto offset 0 and press CTRL+V
Make sure that RAW dump starts at offset #1000
Press CTRL+A and make sure that the length is 486FE000
Save the file as image.hdi
The "image.hdi" should now be recognised by DiskExplorer and Anex86

Converting to RAW dump
==================
Open "image.hdi" in HxD and delete the header at offset #0 - #FFF (4096 bytes)


P.S. Can anyone confirm if the 1 215 287 296 byte image, when transfered to physical media, is working ?

Keep the scene alive !
Eidis

X68000 personal computer is called, "X68K" or "no good good" is called, is the PC that are loved by many people today.

AnnaWu

With NHC you can convert between different hard disk image formats.
http://euee.web.fc2.com/tool/nhc.html#nhc

caius

Quote from: AnnaWu on June 21, 2014, 05:01:27 AM
With NHC you can convert between different hard disk image formats.
http://euee.web.fc2.com/tool/nhc.html#nhc

Yes, I already tried this Tool, very handy but it can't convert from RobIvy64 RAM image to a emulator usable format.
Listen, is there any PC-98 utility similar to X68000 2HDBOOT or 2HDSIM (to mount or load into memory disk images)?
Besides, is there no way to extract files from NON-DOS PC-98 disk images (like Galaga, Gaplus, Dragon Buster)?

eidis

QuoteYes, I already tried this Tool, very handy but it can't convert from RobIvy64 RAM image to a emulator usable format.

Yes it can. Here is how to do it.

Open the image file (1215296497 bytes) in NHC, click next and select the following:

Solid starting point: 0
All sectors: 2373625
Sectors: 17
Heads: 8
Sectorsize: 512

Click "Next", select "ANEX86" or any other preferred format.

Keep the scene alive !
Eidis
X68000 personal computer is called, "X68K" or "no good good" is called, is the PC that are loved by many people today.