diff --git a/README.md b/README.md
index 8687abc..baf1d51 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,2 @@
 # docs
-misc documatation, my know how organized by theme
+misc documatation, my know how organized by themes
diff --git a/cloud/oracle/arm free vps /install Arch Linux.md b/cloud/oracle/arm free vps /install Arch Linux.md
index 0d606f0..67788f5 100644
--- a/cloud/oracle/arm free vps /install Arch Linux.md	
+++ b/cloud/oracle/arm free vps /install Arch Linux.md	
@@ -46,6 +46,7 @@ Device       Start       End   Sectors   Size Type
 
 mount and install: 
 ````sh 
+[ "ls /dev/sda1" == "/dev/sda1" ] && mknod /dev/sda1 b 8 1
 mkfs.vfat /dev/sda15
 mkfs.ext4 /dev/sda1
 mount /dev/sda1 /mnt
diff --git a/linux/postmarketOS/install on oneplus6t b/linux/postmarketOS/install on oneplus6t
new file mode 100644
index 0000000..f8cd6a8
--- /dev/null
+++ b/linux/postmarketOS/install on oneplus6t	
@@ -0,0 +1,55 @@
+credits && resources: https://wiki.postmarketos.org/wiki/
+
+### Install
+````postmarket
+init
+install --split
+export
+shutdown
+cd /tmp/postmarketOS-export
+ls
+````
+| file | where to flash |
+|--|--|
+| boot.img | boot |
+| initramfs  initramfs-extra |  |
+ oneplus-fajita-boot.img | vendor |
+ oneplus-fajita-root.img | userdata 
+| vmlinuz |  |
+
+````fastboot
+erase dtbo
+reboot
+````
+inside postmarketOS: 
+````
+sudo resize2fs /dev/sda17
+```` 
+### CONNECT VIA USB
+````
+ip link set dev usb0 address 12:12:12:12:12:12
+dhclient -v usb0
+ip link set usb0 up
+````
+### DNS
+````
+echo nameserver 1.1.1.1 > /etc/resolv.conf
+````
+### INTERNET VIA USB
+````
+ip route add default via 172.16.42.2
+````
+#### persistent INTERNET VIA USB
+````
+echo 'ip route add default via 172.16.42.2' > /etc/local.d/usb_internet.start
+chmod +x /etc/local.d/usb_internet.start
+rc-update add local
+````
+#### on HOST
+````
+sysctl net.ipv4.ip_forward=1
+iptables -A FORWARD -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
+iptables -A FORWARD -s 172.16.42.0/24 -j ACCEPT
+iptables -A POSTROUTING -t nat -j MASQUERADE -s 172.16.42.0/24
+iptables-save
+````
\ No newline at end of file