Custom ISO won't boot to Fedora

[Sreyan Chakravarty <sreyan32@xxxxxxxxx>]

I am unable to boot the custom ISO I have created.

I have just created a Custom ISO from the Fedora Live ISO using the following command:

genisoimage -U -r -v -T -J -joliet-long -V "Fedora-WS-Live-31-1-9" -volset "Fedora-WS-Live-31-1-9" -A "CDLABEL=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 .

But I can't for the life of me figure out why I can't get the Live ISO to boot. Its stuck at the bootmenu.

This is the directory structure for my custom ISO:

[sreyan@localhost Fedora_ISO]$ tree .
.
├── anaconda-ks.cfg
├── EFI
│   └── BOOT
│       ├── BOOT.conf
│       ├── BOOTIA32.EFI
│       ├── BOOTX64.EFI
│       ├── fonts
│       │   └── unicode.pf2
│       ├── grub.cfg
│       ├── grubia32.efi
│       ├── grubx64.efi
│       ├── mmia32.efi
│       └── mmx64.efi
├── images
│   ├── efiboot.img
│   ├── macboot.img
│   └── pxeboot
│       ├── initrd.img
│       └── vmlinuz
├── isolinux
│   ├── boot.cat
│   ├── boot.msg
│   ├── grub.conf
│   ├── initrd.img
│   ├── isolinux.bin
│   ├── isolinux.cfg
│   ├── ldlinux.c32
│   ├── libcom32.c32
│   ├── libutil.c32
│   ├── memtest
│   ├── splash.png
│   ├── vesamenu.c32
│   └── vmlinuz
└── LiveOS
    └── squashfs.img

7 directories, 28 files

And this is for the original:

[sreyan@localhost Fedora-WS-Live-31-1-9]$ tree .
.
├── EFI
│   └── BOOT
│       ├── BOOT.conf
│       ├── BOOTIA32.EFI
│       ├── BOOTX64.EFI
│       ├── fonts
│       │   └── unicode.pf2
│       ├── grub.cfg
│       ├── grubia32.efi
│       ├── grubx64.efi
│       ├── mmia32.efi
│       └── mmx64.efi
├── images
│   ├── efiboot.img
│   ├── macboot.img
│   └── pxeboot
│       ├── initrd.img
│       └── vmlinuz
├── isolinux
│   ├── boot.cat
│   ├── boot.msg
│   ├── grub.conf
│   ├── initrd.img
│   ├── isolinux.bin
│   ├── isolinux.cfg
│   ├── ldlinux.c32
│   ├── libcom32.c32
│   ├── libutil.c32
│   ├── memtest
│   ├── splash.png
│   ├── vesamenu.c32
│   └── vmlinuz
└── LiveOS
    └── squashfs.img

7 directories, 27 files

-- 

As you can see there is no difference except for the Kickstart file which I am not even using in isolinux.cfg

This is the output of isolinux.cfg:

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

This is the same as the original ISO, there is no difference.

If there is no difference why am I unable to boot into Fedora.

These are the command line params from isolinux in both mine and original ISO.

Mine: https://imgur.com/a/iV5SlW5

Original: https://imgur.com/a/6sfmiJr

For me I am unable to progress any further than the boot screen.

Where am I going wrong ?

Regards,

Sreyan Chakravarty

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