Forum: EasyBoot
Topic: hirens boot cd 9.3 problem
started by: siggi47
Posted by siggi47 on Dec. 04 2007,09:12
i have problems with hirens boot cd 9.3

i have added the iso file in the ezboot folder
and i start it with: bcdw \ezboot\hiren.iso

when i start this from my cd i becomme the massage:

Invalid System Disk
Replace the disk ....

Thanks for any help
siggi47
Posted by xoben on Dec. 05 2007,20:16
Just tested with Hiren's BootCD 9.3, the command 'bcdw /ezboot/hiren.iso' worked.
Posted by siggi47 on Dec. 06 2007,11:30
Thanks xoben,

now i can boot hiren 9.3 iso ,

i can start , but when i select a programm in hirens
it is not possible to execute them , the massege that
comes say: bootCD not found

are there any Solution ???

Thanks for any feed back

siggi
Posted by billonious on Dec. 06 2007,12:19
It seems that bcdw.bin can start the (hiren's) bootsector only but cannot recognize/assign the rest cd.  

Hiren's bootsector is in fact a floppy image of 1,44 mb and hiren's bootcd uses floppy emulation to run in bios. Floppy contains only the DOS operation system & DOS hardware drivers. The rest stuff (DOS applications) are placed in CD due to the lack of space.

The boot sequence is:
easyboot run in bios
launches the 1,44mb floppy image (as it was a real floppy-disk),
floppy image starts DOS (io.sys, command.com),
DOS executes config.sys & autoexec.bat and hirens menu pops up in the screen,
you are selecting an application,
autoexec.bat looks for the application in which ????? cd-drive?

The first cdrom is assigned to your (made from easyboot) multiboot cd.
The second cdrom  should be the "hirens.iso" & should be assigned by bcdw.bin

= I conclude that bcdw.bin can't load iso images completely.


alternative way (and has always worked for me flawlessly)

1. extract the contents of hirens boot cd in eazyboot root (aka disk1)
2. extract the bootsector of hirens boot cd (1.44mb exactly)
3. use a name for the bootsector such as "hiren.ima" or "hiren.bif"
4. drop hiren.ima oin ezboot folder (disk1\ezboot)
5. in easyboot menu, write the command "run hiren.ima"
6. compile (easyboot) multiboot iso and test it in virtual machine.

* i have tried  this method dozens of times and always are succefull