Description
This article provides troubleshooting steps to follow when the error message 'mount /dev/mf0 to /var/log failed: Invalid argument' is displayed on the FortiWeb console during the boot process.
For example:
Reading boot image 3486796 bytes.
Initializing FortiWeb
System is started
Press [enter] key for disk integrity verification.
...............
mount /dev/mf0 to /var/log failed: Invalid argument
Scope
FortiWeb hardware, firmware, boot.
Solution
In most cases, the issue may be resolved by reformatting the boot device and then reinstalling the firmware via TFTP. Make sure to reload the same firmware version as the one used to save the configuration backup file. In case there is no configuration backup file, the unit needs to be reconfigured from scratch.
Solution steps:
1) Connect to the unit on the serial console.
2) Reboot the unit and hit any key to enter the Boot Menu.
3) Select 'format boot device'.
4) Select 'Reload Firmware via TFTP'.
5) When the unit is up, restore the latest configuration backup file.
