Le 13/06/2020 à 10:53, J. Fahrner via Dng a écrit : > Am 2020-06-13 10:31, schrieb richard lucassen: >> The nofail means that it wil mount automatically, but if the disk >> is absent it won't give errors. But it does not wait for the device! > > The disk has itś own power supply and is always connected. I think > there is something missing at the boot stage (driver?). > >> ok, I assume it's u-boot? In that case you can easily try to boot from >> another disk. But apparently you do not have access to the device? > > I don't know the boot process. I think it's like a Raspberry Pi. There > is a little FAT partion and a EXT4 root partition on emmc. Since it is > headless, I only can access it through ssh. When it does not boot I > have to open it, remove the emmc card, insert it into an adapter and > reverse my changes on pc.This is very elaborate. So I need a > straightforward method to isolate the problem.
I had a problem around 15 years ago booting a Powerpc SBC with rootfs on a USB disk and without initramfs. around 15 years ago. Even though the disk was powered on its own, it didn't start spinning before the driver started it. I solved it by adding a delay to the kernel before mounting the rootfs - there was a parameter for that. Maybe it's just enough to add such a delay before trying to mount your USB disk. Didier _______________________________________________ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
