China DOS Union

Excerpted from SYSLINUX's syslinux.doc
It says it can boot the boot sector or comboot file
Master Wengier, please study it.
Also, how to modify bootcd.dat? Please give guidance!

LABEL label
KERNEL image
APPEND options...
IPAPPEND flag_val
Indicates that if "label" is entered as the kernel to boot,
SYSLINUX should instead boot "image", and the specified APPEND
and IPAPPEND options should be used instead of the ones
specified in the global section of the file (before the first
LABEL command.) The default for "image" is the same as
"label", and if no APPEND is given the default is to use the
global entry (if any). Up to 128 LABEL entries are permitted
(for ISOLINUX, 64 LABEL entries.)

Note that LILO uses the syntax:
image = mykernel
label = mylabel
append = "myoptions"

... whereas SYSLINUX uses the syntax:
label mylabel
kernel mykernel
append myoptions

Notes: Labels are mangled as if they were filenames, and must be
unique after mangling. For example, two labels
"v2.1.30" and "v2.1.31" will not be distinguishable
under SYSLINUX, since both mangle to the same DOS filename.

The "kernel" doesn't have to be a Linux kernel; it can
be a boot sector or a COMBOOT file (see below.)

The following is a quote from Wengier's speech on 2003-5-3 0:20:26:
The boot sector of BCDL is incompatible with the DOS boot sector, so they cannot coexist directly, and can only be dual-booted by using the boot menu of WinXP or similar methods.

As for the modification method asked by nre, you can edit the information at the beginning of BOOTCD.DAT.

Wengier, don't always leave things half - said. Which items are modified when modifying the first part of the boot sector? 11 - 32 bytes?

Bytes 13 to 59 of BOOTCD.DAT should be modified according to the actual situation. You can copy this part from the boot sector of drive C and replace the corresponding part in BOOTCD.DAT. Because this part of BOOTCD.DAT originally stored some information of a floppy disk, not a hard disk, so it cannot be used on a hard disk without modification.

Good stuff, any latest news?

Top! Please ask wengier to explain in detail how to add floppy disk boot and CD-ROM boot.

Yeah, sort it out and post it for everyone to learn together.

Hehe! Great! I also added "Boot from Floppy" and "Boot from CD-ROM" in the boot menu. Really learned a lot.
I also asked wengier for guidance. How can I add the option "Enter MS-DOS" (without using your DOS installation disk)? My system is dual-boot XP and 98, and there is already a BOOTSECT.DOS file in the c:\ drive. I followed the article "How to Boot Pure DOS under WinNT/2K/XP" you wrote to edit the BOOT.INI file. When booting, the option to enter DOS appears, but it still enters WIN98. Why? Is it that the file to boot DOS needs to be made with scrboot when the c:\ drive only has the DOS system?

Change BootGUI=1 in C:\MSDOS.SYS to BootGUI=0, then you'll boot into DOS instead of Win98 GUI. To enter Win98 GUI, just type the WIN command.

Oh! Got it, thanks.

E140, please upload the files of your boot CD.

I also followed Wengier's tips to boot from the CD-ROM. Only changed the bytes from 13 to 61. Maybe the machine is different. I don't quite understand either. Open the attachment

Alas, I still can't start. I'll try again.

The following is a quote from hunome on 2003-9-16 23:24:40:
Alas, I still can't boot. I'll try again.

Try replacing the VIDE-CDD.SYS file. Give it a try. I use that Chinese version and the one from the Russian compressed package upstairs. It doesn't work with Wengier's DOS7.1 installation disk.