Grub4DOS Boot USB problem

[mrblotto]

Hello all,
First off I know about his much about Grub/*nix *puts fingers real close together* so I aplogize in advance lol

Anyhow,
Amazingly enough I was able to create a Grub4DOS bootable USB Thumbdrive. I followed the instructions on some site and voila it worked wonderfully. I was able to boot into Acronis with this menu.lst
------------------------------------------------------------------------------------------
timeout 10
default 0

title Acronis Backup & Recovery 10 (9,615)
map (hd0,0)/Acronisv10BootCD.ISO (hd32)
map --hook
chainloader (hd32)
boot

title CommandLine
commandline

title Reboot
reboot

title Halt
halt
------------------------------------------------------------------------------------------

A little farther down I read that you can add other .ISO images and cfg the key to boot to those as well. I was like :awe:. I wanted to add a ghost7.5 ISO and boot to that when needed. FYI link is here:

http://dbastas.blogspot.com/2009/06/from-httpwww.html

So I followed the directions (I think), but I'm not sure of the menu.lst I modified:
------------------------------------------------------------------------------------------
timeout 10
default 0

title Acronis Backup & Recovery 10 (9,615)
map (hd0,0)/Acronisv10BootCD.ISO (hd32)
map --hook
chainloader (hd32)
boot

title Ghost75 (4,942)
map (hd0,0)/bartboot.ISO (hd32)
map --hook
chainloader (hd32)
boot

title CommandLine
commandline

title Reboot
reboot

title Halt
halt
------------------------------------------------------------------------------------------


whenever I choose Ghost75 I get the following error:

error 25: Disk Read error

I did notice a couple things different when I choose Ghost vs. Acronis:
Acronis:
Load Segment: 0x0
System Type: 0x0
Sector Count: 0x4
LoadRBA: 0x28
Boot Type: 0=No emulation

Ghost75:
Load Segment: 0x7C0
System Type: 0x0
Sector Count: 0x1
LoadRBA: 0x15
Boot Type: 2=1.44 Floppy

So, what is the error(s) here? Like I said, I know very little about this and was delighted when I got Acronis to boot lol.

 

[mrblotto]

Update:
It seems that the Grub4DOS doesn't the fact that the ghost75 .iso was built from a MSDOS diskette, then saved as an ISO image. I have a Ghostv14 boot disk, which is based off of something else (WinPE maybe?). I created an ISO image of that and copied it over to the USB key, made the necessary changes to the menu.lst and it booted up no problem. But it does not do what I want it to do vs. plain-jane DOS-based ghost75.

Anyhow, just an update while I was thinking about it.

 

[mrblotto]

Update lol:

I ended up using something called 'YUMI' to create a multiboot USB device. Got about 8 ISO's on the drive now working good.

http://www.pendrivelinux.com/yumi-multiboot-usb-creator/

 

[internalcodeerror]

If you're interested in learning more (much more) about everything boot- and boot-loader-related, I'd recommend the forum/community http://reboot.pro/ (formerly Boot-land). The community there is probably the most knowledgeable around in these matters.