Re: Pi2 bootcode.bin puzzle

On 25/03/2025 23:50, bp@www.zefox.net wrote:

I've even tried different usb-sata bridges. One in particular
with an ASMT chipset that seemed to work everywhere else I tried
it fails to boot. Plugged into a running Pi, or any other host,
the disk seems to work fine with whatever bridge I try.
 Probably this is just a limitation of the Pi2 v1.1 USB system.
I've got another Pi2v1.1 with an old PATA disk roughly as old
as the Pi2, that combo seems to work fine.

I didn't try booting from USB drives until the Pi 3B, but it wasn't until the Pi 4B with it's USB3 ports did that become really worthwhile to use SSDs.

It just crossed my mind that I have another USB hard disk nearly
as old as the Pi2. Maybe that could serve as a sanity check.
Oops, guess not. It's a Western Digital MyBook, a NAS device.
Rats!

It may still work on the Pi 2B, but being slower you may need to increase the value of rootwait in cmdline.txt - particularly if it is a spinning disc rather than an SSD - it could take 60 seconds before the drive is readable.
---druck