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    bg_info_box -o"$PULSATE"                           \
       "$TITLE"                                        \
       ""                                              \
       "$(gt"Checking for existing files and")"       \
       "$(gt"Checking if there is enough room ...")"  \

    excludes="$(rootfs_excludes $AUFS_RAM_MP)"
    exclude_size="$(du_size $excludes)"

    pdev_total=$(all_space  $PERSIST_MP)
    pdev_avail=$(free_space $PERSIST_MP)

    rootfs_file_size=$(du_size $(readlink -f $PERSIST_FILE))

    aufsrw_used=$(du_size $AUFS_RAM_MP)
    rootfs_used=$(du_size $ROOTFS_MP)

    rootfs_full=$(all_space $ROOTFS_MP)

    # Reduce available size by 15% for a 5% extra safety margin and because
    # the du and df commands give different sizes.
    safe_full=$(( $rootfs_full * 90 / 100 ))
    need_size=$(( $aufsrw_used - $exclude_size ))
    xfer_size=$(( $need_size - $rootfs_used))
    ["$xfer_size" -lt"15" ] && xfer_size="?"

    main_text=(

######## HOW DO I PRINT THE VALUE OF $ROOTFS_MP HERE?  If someone could just tell where where to find the answer to that, I could figure out a  lot from there...

       "$(fmt_size"reported rootfs space"  $rootfs_full)"
       "$(fmt_size"total rootfs space"     $safe_full)"
       "$(fmt_size"used rootfs space"      $rootfs_used)"
       "$(fmt_size"excluded file size"     $exclude_size)"
       "$(fmt_size"required rootfs space"  $need_size)"
       "$(fmt_size"approx. transfer size"  $xfer_size)"
       ""
       "$(pf"%12s: %s" "`gt"persist device"`""[f]$PERSIST_DEV[/]")"
       "$(pf"%12s: %s" "`gt"mounted at"`"    "[f]$PERSIST_MP[/]")"
       ""
       "$(fmt_size"persist device total" $pdev_total)"
       "$(fmt_size"persist device free"  $pdev_avail)"
    )

    for t in"${main_text[@]}"; do
        vmsg"$t"
    done

    kill_bg_info_box

    ["$rootfs_full" -lt"$SAFETY_MARGIN" ] && \
        error_box_pf"Available space, %s, is smaller than the margin of %s." \
           "[n]$rootfs_full[/]""[n]$SAFETY_MARGIN[/]"

    ["$safe_full" -lt"$need_size" ] && \
        error_box_pf"Insufficient space.  Have: %s. Need: %s.""[n]$safe_full[/]""[n]$need_size[/]"