BBS:      TELESC.NET.BR
Assunto:  Re: crazy problem with pi4 and ssd
De:       Richard Kettlewell
Data:     Fri, 29 May 2026 09:19:31 +0100
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Mike Scott  writes:
> Richard Kettlewell wrote:
>> Mike Scott  writes:
>>> Hi all. I always seem to get impossible problems....
>>>
>>> Take a pi4 and two disks - both sata connected by a sata to usb
>>> adapter. One is a small real disk drive, the other a Kingston
>>> SSD. Both have been in the spares cupboard for a while.
>>>
>>> I put an old arm64 version of bookworm onto the spinner. Works fine.
>>>
>>> I put the exact same onto the ssd. Won't boot, with messages like
>>> timed out waiting for udev to be empty
>>> or
>>> read error on /dev/sda [details not recorded]
>>
>> Boot the Pi from the spinning disk (or an SD card) and connect the
>> SSD to the Pi. See if you can access it and if not, have a look at
>> the kernel log.
> 
> Already did - I ran one full pass with baddisk -w which completed with
> zero errors.

Never heard of baddisk, what is that?

Anyway from what you?ve said, Linux on the Pi can?t see the SSD during
early boot, but can see it when attached to the Pi later. That?s hard to
explain, since it?s the same hardware and the same code looking for it
in each case.

Just to check, did you run your ?full pass with baddisk? _on the Pi_, as
requested above?

-- 
https://www.greenend.org.uk/rjk/

--- PyGate Linux v1.5.15
 * Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)

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