DOS Bootable CD-ROM WIth No Emulation

[inder1982]

HA!

I want to know that can any one give the code for two files that cane be complied by any assembler like nasm or masm or tasm.

1) the fisrt file i want is the loader that can load a file like IO.SYS in ms-dos for the Cd-ROm directly indted of emulating it like a floppy drive.

2)the second file is code of the file like io.sys it self.

please atleast tell me how to get out of emulation at the time of boooting from CD-ROM.

reply soon.

your inder1982.

[jaclaz]

I am not quite sure to understand what you are asking.

Actually latest versions of Nero let you burn CD as Hard Drive Images instead of Floppy Disk Images.

However there will always be a kind of emulation, as Ms_dos don't have native CDFS reading capabilities.

The only difference will be that the "drive" on which Io.sys, Msdos.sys and command.com reside will be C: instead of A:

The same thing can be achieved by using a LARGE Image, with BCDW/CDshell, see here:

http://severinterrier.free.fr/Boot/ImgBoot/

The other possibility is to use memdisk/syslinux:

http://www.ibiblio.org/pub/micro/pc-stuff/...pcord/beta8h01/

jaclaz

[inder1982]

thanks for your help firstly.

then can there be any othe alternative to achive this thing te ia an able to write a windows installed on x: drive in a amulation to boot only from cd rom not from any other device.

or can you tell me that aftre emulation and booting the windows cd rom the emulation part is removed safely.

inder1982

once angain thanks.

[jaclaz]

then can there be any othe alternative to achive this thing te ia an able to write a windows installed on x: drive in a amulation to boot only from cd rom not from any other device.

or can you tell me that aftre emulation and booting the windows cd rom the emulation part is removed safely.

Sorry, I really cannot understand what you are meaning.

Could you please post a description of what you want to achieve, possibly using shorter sentences and better explaining ?

jaclaz

[prathapml]

Are you setting up a multi-boot CD? (like 3-in-1, or something?)

If so, you need a boot-loader - check out CDshell and EasyBoot.

If those are too big for what you want to accomplish, probably just a simple editing of the existing boot-sector (on which you want to pattern yours) in a hex-editor will do.