SG-2440 stuck at boot with only "/" displayed - what does it mean ?

[liotier]

A failed upgrade borked my router, so I'm trying to reinstall on the mSATA SSD inside, booting from a USB stick with the install media on it. I'm interacting through the serial console.

The device boots from the USB stick, but the initial "/" is not followed by the rest of the normal boot sequence with boot menu.

This boot device works fine on another AMD64 host, though a generic PC rather than the peculiar SG-2440 - on that other device, the initial "/" is followed by the rest of the normal boot sequence.

Same behaviour with other releases, also with serial and VGA variants.

Am I doing something wrong ?

[cookiemonster]

It looks like the bios is trying to do a network boot (pxe) first. Are you able to get to the boot menu and alter it so it boots from the install media? In short, the booting hasn't gone past the stage where a boot file is found.