~~tag> OOWOW howto usb-flash format~~
====== Format USB-flash as oowow dump storage ======

[[:OOWOW:]] Dump storage can use: ''ext4'' or ''exfat'' file systems.

<WRAP important >
Please be careful with disk formatted as ''vfat'', this variant have 4G file size limitation, and not suitable for big dump images.  ''vfat'' formatted disks not recommended for oowow usage.
</WRAP>

<WRAP info >
OOWOW sd images, also can works as USB image, in this cases oowow dump storage will be created automatically on same disk as 2nd partition.

Another situation if OOWOW works as embedded service from onboard SPI Flash, and current topic about this  
 
</WRAP>

===== Format usb-storage on remote linux PC side  =====

Whole disk variants:

```sh ext4 format whole disk
sudo mkfs.ext4 -L MY_DISK /dev/sdX
```

```sh exfat format whole disk
sudo mkfs.exfat -n MY_DISK /dev/sdX
```

<WRAP tip >
Please replace ''/dev/sdX'' to actual device name! 
</WRAP>

Partitions variants: **preferred**

```sh exfat format 1st partition

echo -e "label:dos\n\n part1 : start=2048, type=7\n" | sudo sfdisk /dev/sdX
sudo mkfs.exfat -n MY_DISK /dev/sdX1

```

===== Format usb-storage inside OOWOW  =====

<WRAP tip >
Formatting inside OOWOW is a easiest way, USB storage will be formatted as ''exfat'', and will be fully compatible for any usage!
</WRAP>

__ Main Menu => Advanced => Format USB user storage disk __