On Sat, 23 Oct 2021 16:56:40 +1200,
nospam.Daniel.Path@f52.n371.z2.fidonet.org (Daniel Path) wrote:

> i think the blink should stop

I just tried it in the Vice emulator. There, the blinking does stop.
The drive status reads the startup message, not just "OK". That might
suggest that the C128 resets the drive after the unsuccessful boot
attempt.

Could it be that the reset line in your IEC cable is broken? Does the
drive restart when you boot into C64 mode?
--
RoRo

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