Bootable Dos-Based No Emulation CD

[updownloader]

Hi All !

I'm trying one thing for days and don't works !

I'm trying to make a bootable DOS based CD-ROM. But I dont want a CD emulating a floppy disk !

I don't want to need using ms-dos CDROM drivers

I want to have a dos access to my CDROM without loading mscdex.exe & co...

I tried this and it almost worked :

I made a 650 MB HDD where I put all system files and my dos applications and I tried the Nero option of using a HARDDISK image for booting.

It works but.... Nero modify the MBR of the HDD BEFORE making the image... so when loading the CD-ROM, it try to load win98 (I even see the win98 boot logo) even if there is no win98 files on the cd-rom !!

Nero also modify the Master Boot Record of the 650 MMB HDD and I need to make fdisk /mbr to restore it !

How can I make a boot CD that launch dos and where the whole CD files are available without cd drivers ? With "HDD emulation" or "no emulation", but I don't want FDD emulation or thing like UBCD / CDshell that load FDD based image.

I hope you understood my bad english

Thanks a lot !

[liquidplasmaflow]

Well, because DOS doesn't natively support CD-ROM drives, it seems like MSCDEX.exe and a driver would be your only option

[updownloader]

no... when I made the HDD emulation, I accessed my whole CD without Cd drivers... but a lot of problem because It tried to write to the CD (thinking it was a HDD)

[jaclaz]

so when loading the CD-ROM, it try to load win98 (I even see the win98 boot logo) even if there is no win98 files on the cd-rom !!

Well, it MUST be somewhere, I don't think it is created from thin air!

The boot logo is INSIDE the win98 IO.SYS file

http://www.easydesksoftware.com/common.htm#logos

Not to see it, you must set the value

Logo=0

in file MSDOS.SYS

(you can edit it with Notepad)

http://www.easydesksoftware.com/msdos.htm

Reference:

http://support.microsoft.com/?id=151667

http://support.microsoft.com/kb/118579/EN-US/

About the main problem, I cannot help you, I quite frankly cannot understand why you won't use a CD-ROM driver in your system, if you have problems with MSCDEX, why don't you use SHSUCDX:

http://www.geocities.com/jadoxa/shsucdx/

On the other hand, your approach is very interesting, please post progress/results.

If you are on Win2K/XP I suggest you use a HD image instead of an actual HD.

You can use the Ken Kato driver:

http://chitchat.at.infoseek.co.jp/vmware/vdk.html#top

and (optionally) my pseudo GUI:

http://home.graffiti.net/jaclaz:graffiti.n...ts/VDM/vdm.html

Later, you can (instead of burning on a CD) use qEMU, see this thread:

http://www.msfn.org/board/index.php?showtopic=48629

to test the .ISO image.

Also, you might want to experiment with this:

http://www.911cd.net/forums//index.php?showtopic=8955

and with the original eltorito.sys by Bart:

http://www.nu2.nu/eltorito/

http://www.nu2.nu/bootcd/#cdromsi

jaclaz