Re: [gentoo-user] Why isn't this SDcard mounting?

[Alan McKinnon <alan.mckinnon@gmail.com>]

On 29/08/2017 17:33, Stroller wrote:
> 
>> On 29 Aug 2017, at 15:53, Ian Zimmerman <itz@very.loosely.org> wrote:
>>
>> I don't have a quick solution, but I would look at the state of /dev
>> (not only /dev/sdb* but also the various /dev/disk/by-* directories)
>> both before and after running parted.  parted is my prime suspect for
>> messing things up here.
> 
> Indeed.
> 
> No sdb1 is mentioned, despite it apparently being recognised by the kernel when plugged in (from the last line of the `grep  kernel /var/log/messages` output in my previous post).
> 
>   $ ls -l /dev/disk/* | grep sdb
>   lrwxrwxrwx 1 root root  9 Aug 29 14:51 usb-Generic-_Card_Reader_20060413092100000-0:0 -> ../../sdb
>   lrwxrwxrwx 1 root root  9 Aug 29 14:51 pci-0000:00:12.2-usb-0:1:1.0-scsi-0:0:0:0 -> ../../sdb
>   $ 
> 
> The same command, grepping sda, shows much longer output, with symlinks to all the partitions 
> 
> Is it udev that's responsible for populating the dev nodes?
> (is that the right terminology?)
> 
> How do I force it to reconstruct the partition table? Surely one should expect to be able to format or partition a removable drive and have the dev nodes created without the necessity of rebooting?

run partprobe and see if that makes a difference. It forces the kernel
to re-organize it's idea of what partitions are available.

I would have thought SD Cards were treated like regular hotpluggable
devices like USB storage, but maybe not. I'd be interested to see the
results of running partprobe.


-- 
Alan McKinnon
alan.mckinnon@gmail.com