If you plug in a USB drive formatted ext4, on linux box and it does not show up under dev (expec...

[G+_Rud Dog]

If you plug in a USB drive formatted ext4, on linux box and it does not show up under /dev (expect /dev/sda or /dev/sda1) what can be done to correct the problem? Have tried reboot, removing and reinserting USB stick and reformating to ext4. Can't mount what you can't see. 

[G+_Seth Leedy]

A guess, an error in the partition table could do it. Try the tool lsusb. See what it shows.

[G+_Jason Perry]

Sorry, this post is just so I get a notification to see what people say.

[G+_Rud Dog]

Seth Leedy thank you, running OpenWRT Linux and it is not included in the version I am running. Trying to find a simple tutorial on how to add omitted options from scaled down linux in use.

[G+_Steve Martin]

Is it possible the OpenWRT doesn't do ext4? Maybe try formatting it as Fat32 and see what happens when you insert it?

[G+_Rud Dog]

Steve Martin this was working before and still running on another unit. Guessing will try another usb stick maybe something went wrong with my original. Was looking for any commands which resets, so to speak, the USB stick connection.

[G+_Steve Martin]

Rud Dog USB is plug and pray, so disconnecting and reconnecting is about your best choice.

 

I went through a similar thing with trying to set up an Micro SD card on a RasPi only to discover that the Micro SD was the wrong type/speed to work with the Raspberry. YMMV

[G+_Rud Dog]

Steve Martin Well formated another smaller stick and it refuses to show up but have overlooked one thing. This particular USB stick is plugged into a 5 port USB strip. Time to make sure it is working ok.

[G+_Eddie Foy]

 fdisk? (fdisk -l) I think  list partitions.  Also a DF -h worth a shot, along with a lsusb and see if the system even sees it as a valid device.  Then there is dmeg (with grep)

[G+_Rud Dog]

Eddie Foy fdisk only displays info on this image, df -hT does not show the USB stick and Isusb also is not on the linux on board. First time hearing about dmeg will try it as welll.

Thanks Eddie.

[G+_Eddie Foy]

oops dmesg :)

Does it have a package manager?

You said openWRT.

My Reaver Pro runs openWRT and doing a package search failed to find a package (nano).  But it was listed on openWRT's site : ( http://tinyurl.com/p3sr7j9 )  I was able to wget it and then do a package install pointing to the dl'd file.

 

opkg install usbutils

 

 

But it sounds like the drive just isn't being seen.  Got another drive?

 

So there is no /dev/sda   or  /dev/sda1 ??

[G+_Rud Dog]

Eddie Foy Turns out had a bad board replaced and fired it up and now sda, sda1 and sda5 shows up. Normally the way I understand it, the sda is the usb stick, the sda1 is the partition but what is new to me is seeing the sda5. I did have the 5 port USB hub plugged into it but removed it to lessen the setup. After resetting to factory defaults the sda5 still showed up. Going to try a manual mount of all and see what happens.

[G+_Eddie Foy]

glad you got it sorted out.  (linux is great all up till it breaks)

[G+_Black Merc]

I remember not too long ago... thumb drives interface firmware only recognized fat32/16... formating a drive to another fs effectively locked up the interface

[G+_Eddie Foy]

I've sucessfully formatted to ext4.  But was a SanDisk.  But

i can see that with cheap Asian ones.