[Easy Multiboot With Iso's]

Contig, Defraggler, and just about any other third-party defragmenting program can defrag single files.

True, but I found that they could have a hard time defragging a large file, if you are close to the capacity limit.

I even had problems getting them to defrag a big iso, that there were lots of "uninterrupted" free space for.

If defragging fails, then try my suggestion.

After my attempt to defrag failed, I formated my drive and started to transfer the biggest files first, one at a time and checked that they were not fragmented after each transfer.

[Easy Multiboot With Iso's]

Hi, this is from my menu.lst file:

title System first HDD boot loader
rootnoverify (hd1)
chainloader +1
map --floppies=1

title DSL 4.4.10 initrd
find --set-root /linusiso/dsl-4.4.10-initrd.iso
map --mem /linusiso/dsl-4.4.10-initrd.iso (hd32)
map --hook
root (hd32)
chainloader (hd32)
boot

title PUP 4.3.1
find --set-root /linusiso/pup-431.iso
map --mem /linusiso/pup-431.iso (hd32)
map --hook
root (hd32)
chainloader (hd32)
boot

title Boot Parted Magic 4.8
find --set-root /linusiso/pmagic-4.8.iso
map /linusiso/pmagic-4.8.iso (hd32)
map --hook
root (hd32)
chainloader (hd32)
boot

title Kon boot v1.1
map (hd0,0)/linusiso/konboot.img (fd0) 
map --hook
chainloader (fd0)+1
rootnoverify (fd0)
map --floppies=1

title BackTrack 4 (1024x768)
kernel /bt4boot/vmlinuz BOOT=casper boot=casper nopersistent rw quiet vga=0x317
initrd /bt4boot/initrd.gz

title BackTrack 4 Memory Test (Installed ok)
find --set-root /linusiso/bt4-final.iso
map /linusiso/bt4-final.iso (0xff)
map --hook
root (0xff)
kernel                /boot/memtest86+.bin
boot

title Boot Ubuntu 9.10 (Installed)
find --set-root /linusiso/ubuntu-9.10-desktop-i386.iso
map /linusiso/ubuntu-9.10-desktop-i386.iso (0xff)
map --hook
root (0xff)
kernel /casper/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper iso-scan/filename=/linusiso/ubuntu-9.10-desktop-i386.iso splash
initrd /casper/initrd.lz
boot

title Riplinux 9.3 (Installed ok)
find --set-root /linusiso/RIPLinuX-9.3.iso
map --heads=0 --sectors-per-track=0 /linusiso/RIPLinuX-9.3.iso (0xff) || map --heads=0 --sectors-per-track=0 --mem /linusiso/RIPLinuX-9.3.iso (0xff)
map --hook
chainloader (0xff)
boot

title Windows7 x64 install iso
find --set-root /Windows7x64.iso
map /Windows7x64.iso (hd32)
map --hook
root (hd32)
chainloader (hd32)

Remember that you can't boot a fragmented file. So the best way to get a big image files working, is to format the drive(Or delete all files), and start transferring the biggest files first.

PS. I've only tried to boot the W7 iso to the bootloader(Press any key to boot from CD...).

So I dunno if a whole install will work.