Dear Adarsh,
In message CAJgxa7eTn4L5Jbg2YbDExPFc1_69viALtW2YQYHj9VsU7xzQbA@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.
Wolfgang Denk