Make makeUSB.sh install prerequisites

[probonopd]

sudo apt install gdisk
sudo /usr/lib/udisks2/udisks2-inhibit ./makeUSB.sh -b -c -e /dev/sdc

(...)

# Mount data partition
mount "${usb_dev}${data_part}" "$data_mnt" || cleanUp 10

# Install GRUB for EFI
[ "$eficonfig" -eq 1 ] && \
    { $grub_cmd --target=x86_64-efi --efi-directory="$efi_mnt" \
    --boot-directory="${data_mnt}/boot" --removable --recheck \
    || cleanUp 10; }
grub-probe: error: failed to get canonical path of `overlay'.
grub-install.real: error: /usr/lib/grub/x86_64-efi/modinfo.sh doesn't exist. Please specify --target or --directory.

me@host:~/multibootusb$ cat /etc/os-release 
PRETTY_NAME="Deepin 15"
NAME="Deepin"
VERSION_ID="15.5"
VERSION="15.5"
ID=deepin
HOME_URL="https://www.deepin.org/"
BUG_REPORT_URL="http://feedback.deepin.org/feedback/"

[probonopd]

Solution:

sudo apt install gdisk grub-pc

[probonopd]

Would be good if ./makeUSB.sh actually did this automatically.

[aguslr]

@probonopd, sorry for the delay.

makeUSB.sh is just a simple script with the steps required to create the pendrive. It prints to the standard output the appropriate errors so they can be sorted out.

We should avoid over-complicating the script (i.e. dealing with each distro's package managers) since it runs as root and people should be able to easily understand what it's doing. That's also why manually executing the steps is explained first in the instructions.