An Easy2boot USB multiboot USB drive should work. Give the truecrypt rescue iso file a .iso01 file extension.
If e2b works, you can add e2b (legacy) to a Ventoy USB drive
https://easy2boot.xyz/ventoy/add-easy2bo...usb-drive/
If e2b works, you can add e2b (legacy) to a Ventoy USB drive
https://easy2boot.xyz/ventoy/add-easy2bo...usb-drive/