[Elphel-support] the problems from the hdd (in short)

[Sebastian Pichelhofer]

OK so do I understand this correctly that the new 4K block size of
newer harddisks is the problem:
http://en.wikipedia.org/wiki/Disk_sector ?

Since the embedded linux in the 353 camera is already several years
old it could well be the case that it has problems with 4K sectors.


Carlos, one idea: Could you prepare the HDD and the partition tables
on a PC and then see if the camera can talk to it nicely.

I do think we should put a notice on the wiki about the 4K sector
problem once we have a full understanding, and probably recommend
customers to not use/or use with caution 4K HDDs for now.

Regards Sebastian

On Fri, Feb 3, 2012 at 14:28, Carlos Padial <palidoestudio2 at gmail.com> wrote:
> Thanks to oleg who kindly help me a lot yesterday, we have narrow down
> the problem to this one:
>
> # fdisk -l
>
> Note: sector size is 4096 (not 512)
>
> Disk /dev/hda: 120.0 GB, 120034123776 bytes
> 255 heads, 63 sectors/track, 1824 cylinders
> Units = cylinders of 16065 * 4096 = 65802240 bytes
>
> Disk /dev/hda doesn't contain a valid partition table
>
> So i need to make a new partition table.
> I found about fix tables with cfdisk but seems its not installed
> With the -o option in fdisk the changes seems not  to be applied at all...
>
> someone knows how to proceed?
>
> best regards.
> --
> Carlos Padial
> surreal.asturnazari.es