[syslinux] ISOLINUX stuck at boot menu. How do I debug ?

[Sreyan Chakravarty]

I have just created an ISO containing Fedora and ISOLinux as the bootloader.

This is the ISO creation command:

genisoimage -U -r -v -T -J -joliet-long -V "Fedora-WS-Live-31-1-9" -volset
"Fedora-WS-Live-31-1-9" -A "Fedora-WS-Live-31-1-9" -b isolinux/isolinux.bin
-c isolinux/boot.cat -no-emul-boot -boot-load-size 4 -boot-info-table
-eltorito-alt-boot -e images/efiboot.img -no-emul-boot -o
../Fedora_Custom.iso .


Unfortunately when I boot and press enter nothing happens. I don't
understand what is going on and I want to know how I can debug this.

This is my isolinux.cfg file


default vesamenu.c32
timeout 600

display boot.msg

# Clear the screen when exiting the menu, instead of leaving the menu
displayed.
# For vesamenu, this means the graphical background is still displayed
without
# the menu itself for as long as the screen remains in graphics mode.
menu clear
menu background splash.png
menu title Fedora-Workstation-Live 31
menu vshift 8
menu rows 18
menu margin 8
#menu hidden
menu helpmsgrow 15
menu tabmsgrow 13

# Border Area
menu color border * #00000000 #00000000 none

# Selected item
menu color sel 0 #ffffffff #00000000 none

# Title bar
menu color title 0 #ff7ba3d0 #00000000 none

# Press [Tab] message
menu color tabmsg 0 #ff3a6496 #00000000 none

# Unselected menu item
menu color unsel 0 #84b8ffff #00000000 none

# Selected hotkey
menu color hotsel 0 #84b8ffff #00000000 none

# Unselected hotkey
menu color hotkey 0 #ffffffff #00000000 none

# Help text
menu color help 0 #ffffffff #00000000 none

# A scrollbar of some type? Not sure.
menu color scrollbar 0 #ffffffff #ff355594 none

# Timeout msg
menu color timeout 0 #ffffffff #00000000 none
menu color timeout_msg 0 #ffffffff #00000000 none

# Command prompt text
menu color cmdmark 0 #84b8ffff #00000000 none
menu color cmdline 0 #ffffffff #00000000 none

# Do not display the actual menu unless the user presses a key. All that is
displayed is a timeout message.

menu tabmsg Press Tab for full configuration options on menu items.

menu separator # insert an empty line
menu separator # insert an empty line

label linux
  menu label ^Start Fedora-Workstation-Live 31
  kernel vmlinuz
  append initrd=initrd.img root=live:CDLABEL=Fedora-WS-Live-31-1-9
 rd.live.image quiet

label check
  menu label Test this ^media & start Fedora-Workstation-Live 31
  menu default
  kernel vmlinuz
  append initrd=initrd.img root=live:CDLABEL=Fedora-WS-Live-31-1-9
 rd.live.image rd.live.check quiet

menu separator # insert an empty line

# utilities submenu
menu begin ^Troubleshooting
  menu title Troubleshooting

label vesa
  menu indent count 5
  menu label Start Fedora-Workstation-Live 31 in ^basic graphics mode
  text help
    Try this option out if you're having trouble starting
    Fedora-Workstation-Live 31.
  endtext
  kernel vmlinuz
  append initrd=initrd.img root=live:CDLABEL=Fedora-WS-Live-31-1-9
 rd.live.image nomodeset quiet

label memtest
  menu label Run a ^memory test
  text help
    If your system is having issues, a problem with your
    system's memory may be the cause. Use this utility to
    see if the memory is working correctly.
  endtext
  kernel memtest

menu separator # insert an empty line

label local
  menu label Boot from ^local drive
  localboot 0xffff

menu separator # insert an empty line
menu separator # insert an empty line

label returntomain
  menu label Return to ^main menu
  menu exit

menu end


Let me know if any further information is required.

Can someone please help me ?
-- 
Regards,
Sreyan Chakravarty