[cmd] clarification on syntax of 'chpart' command
wd at denx.de
Fri May 7 08:45:58 CEST 2021
In message <CAJgxa7eTn4L5Jbg2YbDExPFc1_69viALtW2YQYHj9VsU7xzQbA at mail.gmail.com> you wrote:
> I was trying to verify and use 'chpart' command on Beaglebone black with an
> SDHC card ( with multiple partitions ) and am unable to get its exact
> syntax.Is this command applicable to
> any particular category of storage devices (viz. NOR flash,NAND flash etc)??
I agree that it is not obvious from the help output, but the fact
that the chpart command is implemented in the cmd/mtdparts.c source
file gives a clear hint: it works only for MTD devices, not for
general storage devides using DOS (or GPT) partitions.
> => mmc dev 0
> switch to partitions #0, OK
> mmc0 is current device
This is what you should look for. THe help output shoud tell you:
mmc dev [dev] [part] - show or set current mmc device [partition]
So instead of
> => chpart mmc0:2
> Device nand0 not found!
you would use:
=> mmc dev 0 2
Hope this helps.
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