Add startup confirmation to disk utilities

HDD/erase-storage.sh

@@ -15,6 +15,8 @@ Usage: sudo ./HDD/erase-storage.sh DEVICE [zero|random]
 For a partition, writes one full pass of zeros (default) or pseudorandom data.
 For a whole disk, detects and runs a supported ATA Secure Erase or NVMe Sanitize
 operation. Whole-disk erasure requires two separate confirmations.
+At startup, asks you to confirm that you can keep the computer and drive
+powered and connected for the hours the operation may take.
 
 Arguments:
   DEVICE             Partition (for example /dev/sda1) or whole disk
@@ -51,6 +53,9 @@ case "$FILL_MODE" in
         ;;
 esac
 
+common::log "WARNING: Erasing data may take hours. Do not power off, reboot, or suspend the computer, or disconnect power or the drive."
+common::confirm "Can the computer and drive remain powered and connected until the operation finishes?" || exit 0
+
 for required_command in findmnt lsblk readlink swapon date dd sleep; do
     common::require_cmd "$required_command"
 done