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Step (1) - Prepare the USB Stick
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- Format the USB stick and give it a volume label of ASUS.
Most USB sticks come pre-formatted as FAT32 or exFAT. exFat is generally not supported by the ASUS routers, and FAT32 does not support access permissions under Linux (access is global). Users will need to format the stick to Linux EXT2, EXT3 or EXT4. Note that some early MIPS based routers, such as the N66U, do not support EXT4 disk format.
You can use the Asuswrt-Merlin Terminal Menu (amtm) format disk feature to format a USB and create up to three partitions. See
https://diversion.ch/amtm.html for a descripiton of amtm. Use the amtm support forum
https://www.snbforums.com/threads/amtm-the-asuswrt-merlin-terminal-menu.42415/ for questions about amtm and the format disk feature.
Optionally, you can download and install software to format a USB in Linux format. Below are two tools I have used in the past:
- EaseUS Partion Manager (
https://www.easeus.com/partition-manager/epm-free.html)
- MiniTool Partition Manager(
https://www.partitionwizard.com/free-partition-manager.html)
Any volume label may be used. If you change the label, use your new label in place of 'ASUS' in the remainder of this guide.
- Remove the USB stick from your computer and plug it into the router