Issues using a large disk - 7800G of reserved space

[0x6A7232]

I'm using ventoy-1.0.96. I do have a 8TB disk. I'd like
to use it for ventoy and for backup. So I'm trying to execute:

  sudo ./Ventoy2Disk.sh -i  -g -r 7800000 /dev/sdc

This leads to:

  **********************************************
      Ventoy: 1.0.96  x86_64
      longpanda admin@ventoy.net
      https://www.ventoy.net
  **********************************************

  Can't reserve 7800000 MB space from /dev/sdc


Using the GUI gives a similar error.

I can use Ventoy using this procedure:

1. Manually create partitions on the disk:
    1 ... 200GB
    2 ... 100MB
    3 ... remaining space
2. Delete partition 2
3. Do a non-destructive install: sudo ./Ventoy2Disk.sh -i -n /dev/sdc
    Partition 2 is recreated with a size of roughly 32MB
4. Delete partition 3
5. Create partition 3 for the remaining space

Do a very small (10GB?) reserve then after you're done, simply use GParted to extend the partition to the remaining space.