Asus AC87U fdisk problem

[Ojee]

So I'm trying to install a swap file on a Sandisk Ultra 16gb usb stick, using this guide:
https://github.com/RMerl/asuswrt-merlin/wiki/Minidlna:--Common-Issues-&-Solutions

The first step of this guide is to create 2 linux partitions, using this guide:
http://www.algissalys.com/how-to/format-and-partition-usb-asuswrt-routers

However, after deleting all partitions, I press 'p' and it still shows me the two same partitions!

Number Start (sector) End (sector) Size Code Name

1 40 409639 200M 0700 EFI System Partition

2 411648 30461951 14.3G 0700 Untitled

So I'm stuck. Because when I press 'd' again, it says there are no partitions to delete?
Does anyone know what I'm doing wrong?

 

[joegreat]

The first step of this guide is to create 2 linux partitions, using this guide:
http://www.algissalys.com/how-to/format-and-partition-usb-asuswrt-routers

Better to use a swap file and not a partition: If you use the partition it can wear-out the flash drive fast...
I create on every reboot a new swap file to have it spread over the whole flash drive - and from time to time I delete the old swap files - below my script which I launch via post-mount user script.

#!/bin/sh
#
# Write to syslog.log
/usr/bin/logger -t START_$(basename $0) "started [$@]"
#
# Create a log file for the script
SCRLOG=/tmp/$(basename $0).log
touch $SCRLOG
NOW=$(date +"%Y-%m-%d %H:%M:%S")
echo $NOW "START_$(basename $0) started [$@]" >> $SCRLOG
#
# Wait a bit to get by sure the actual date
sleep 10
#
# Get new swap file name
FNAME=/tmp/mnt/ac87u/swap$(date +%d)
echo $FNAME >> $SCRLOG
#
# Remove existing swap file (from today)
rm $FNAME >> $SCRLOG
#
# Create new file
dd if=/dev/zero of=$FNAME bs=1024 count=262144 >> $SCRLOG
#dd if=/dev/zero of=$FNAME bs=1024 count=524288 >> $SCRLOG
#
# Make the new file a swap file
mkswap $FNAME >> $SCRLOG
#
# Use new swap file
swapon $FNAME >> $SCRLOG
#
NOW=$(date +"%Y-%m-%d %H:%M:%S")
if [ "$?" -ne 0 ]
then
  echo $NOW "Error in script  execution! Script: $0" >> $SCRLOG
else
  echo $NOW "Script execution OK. Script: $0" >> $SCRLOG
fi
/usr/bin/logger -t STOP_$(basename $0) "return code $?"
exit $?

 

[Ojee]

Ok that seems like a better idea then! How do I use the script? I'm really new to this.