Re: disk non-destructive bad-block write/fix?

On Tue, Sep 20, 2022 at 6:33 AM Christoph Brinkhaus <c.brinkhaus@t-online.de>
wrote:

> Am Mon, Sep 19, 2022 at 09:40:42PM -0600 schrieb Gary Aitken:
>
> Hi Gary,
>
> > I have a system I need to back up and my only available backup disk is
> > throwing a lot of errors like:
> >
> >    (da0:umass-sim0:0:0:0): WRITE(10). CDB: 2a 00 3c fd e5 68 00 00 40 00
> >    (da0:umass-sim0:0:0:0): CAM status: CCB request completed with an
> error
> >    (da0:umass-sim0:0:0:0): Retrying command
> >    (da0:umass-sim0:0:0:0): WRITE(10). CDB: 2a 00 3c fd e6 68 00 00 20 00
> >    (da0:umass-sim0:0:0:0): CAM status: CCB request completed with an
> error
>
> A different countermeasure could be to use an external power supply if
> possible. I have a USB disk with does not work with the USB +5V supply
> but performs well with an external +5V wall type supply.
>

It also could be the USB controller. I have an older USB drive that works
with many computers, but failed on a newer one. The newer computer usually
has issues on its USB3 port, but later has issues on USB2 as well. The USB
enclosure has an additional USB cable for getting power from the second USB
port. Plugging in the second USB cable worked for some time, and the USB
randomly spits out the above errors. The problem seems related to boot up.
When this newer computer has USB issues, it will always have the issue till
reboot.