single user mode?

[Tom Pusateri]

> On Dec 6, 2014, at 2:17 PM, Anton Shterenlikht <mexas at bris.ac.uk> wrote:
> 
>> From lists.br at gmail.com Sat Dec  6 14:22:54 2014
>>> Is it possible to enter a single user mode
>>> on arm 10.1-release?
>>> 
>>> My disk, well.. the sd card, got corrupted,
>>> so wanted to run fsck on it, but cannot
>>> enter a single user mode. I ended up putting
>>> the sd card into a laptop and running fsck there.
>>> This fixed lots of panics, but is it possible
>>> to enter the single user mode on arm, and
>>> run fsck directly there?
>> 
>> If you are using RPi with official or crochet images then yes, you can
>> force it to boot in single user mode and run fsck, but (and there
>> always a but) you can only do that from serial console, the vt
>> framebuffer starts too late to allow you to break into loader prompt.
> 
> so I need a usb to serial converter for this, right?
> 
> Anton
> 

You need a TTL serial cable. I have used this one successfully which is around $5 USD:

http://www.amazon.com/gp/product/B008AGDTA4/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1

Tom