Hi James,<br><br><div class="gmail_quote">On 17 June 2013 21:55, James Cameron <span dir="ltr"><<a href="mailto:quozl@laptop.org" target="_blank">quozl@laptop.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="im">On Mon, Jun 17, 2013 at 09:20:20PM -0400, George Hunt wrote:<br>
> I ordered a 64GB SD, and have it in hand. It is formatted with exfat<br>
> disk format, apparently a Microsoft proprietary standard. There is<br>
> a driver for exfat, but it is not shipped with the XO, so there was<br>
> some truth to the hearsay that 64GB SD cards do not work on the<br>
> XO. BUT . . .<br>
><br>
> I was able to read exfat formatted "out of the box" transcend 64GB<br>
> drive on a XO1.5, with a downloaded driver, so I expect that<br>
> electrical compatibility is already established.<br>
<br>
</div>It is the protocol compatibility that causes us problems. There's<br>
this tiny computer inside the card which has to interoperate with our<br>
computer. And from what you describe above, you haven't yet tested<br>
the protocol compatibility with Open Firmware. You have to boot from<br>
it to test that.<br>
<div class="im"><br>
> I think you will want it to be formatted with ext4, because the OS<br>
> doesn't run on a FAT formated drive. I should caution that I have<br>
> read that SD cards have an erase block size that makes it important<br>
> to preserve the partition location and sizing, as the disk format is<br>
> being erased and reformatted.<br>
<br>
</div>If you use the drive for the operating system, there's no need to<br>
partition or format, because the fs-update of 13.1.0 .zd file will<br>
create all that is required. Just make sure you use the devalias<br>
fsdisk ext:0 trick to persuade fs-update to use the external slot.<br>
<br>
During boot, the operating system may expand the filesystem to cover<br>
the rest of the device.<br></blockquote></div><br>I just tried the devalias trick using 13.2.0 as the OS on a XO-4. On initial boot it drops me into dracut appearing to complain about a read-only filesystem while attempting resize. Any thoughts on how to debug this?<br>
<br>Jerry <br><br>