<div dir="ltr">This is probably a question for James C. I'm concerned that I may have invalidated the verification, or at least created misleading information.<div><br></div><div style>My confession: I couldn't pass up the chance to evolve our "prep-storage.sh" script that is part of XSCE before I lost the exfat formatting. So I tweaked on our script until it recognized and dealt correctly with exfat format. So when I did the "fs-update <os.zd>", the 64GB SD card was already formatted ext4.</div>
<div style><br></div><div style>Do you think that a separate formatting step is necessary, or irrelevant, to the success of fs-update?</div><div class="gmail_extra"><br></div><div class="gmail_extra">George<br><br><br><div class="gmail_quote">
On Tue, Jun 18, 2013 at 12:27 PM, George Hunt <span dir="ltr"><<a href="mailto:georgejhunt@gmail.com" target="_blank">georgejhunt@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">I followed the suggestions at <a href="http://wiki.laptop.org/go/Release_notes/10.1.0#External_SD" target="_blank">http://wiki.laptop.org/go/Release_notes/10.1.0#External_SD</a> -- substituting <span style="color:rgb(31,73,125);font-family:Calibri,sans-serif;font-size:15px">31035o1.zd for the earlier OS64.</span><div>
<br></div><div><pre style="line-height:1.1em;background-color:rgb(249,249,249);border:1px dashed rgb(47,111,171);padding:1em">devalias fsdisk /sd/disk@1:0
fs-update u:\os64.zd
</pre><div>after the reboot, the "df" command indicated rootfs had a size of 60GB. I was able to write and read from the command line as olpc and as root. So I believe that indicates that 64GB drives do work on the XO-1.5. </div>
<span class="HOEnZb"><font color="#888888">
<div><br></div><div>George</div><a name="13f581c7a10cd866_External_USB" style="color:rgb(48,107,181);background-image:none;font-family:Arial,sans-serif;font-size:13px;line-height:19.046875px"></a></font></span></div></div>
<div class="HOEnZb"><div class="h5">
<div class="gmail_extra"><br><br><div class="gmail_quote">On Mon, Jun 17, 2013 at 10:55 PM, 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>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><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>
<div><br>
> I do not expect that the "prep-storage.sh" script which is part of<br>
> XSCE-0.3, will correctly format a 64GB SD card. I do not know<br>
> whether the XSCE install process will properly function when it is<br>
> loaded into a 64GB SD. (I expect probably so, since I don't think<br>
> the OS would know whether it was running on the mother board or on<br>
> an external SD card).<br>
<br>
</div>It must know, and does know.<br>
<div><br>
> I'll experiment with my new SD card, and try to document the results<br>
> with a script that you can use to format big SD cards.<br>
<br>
</div>I suggest gparted for partitioning and formatting.<br>
<span><font color="#888888"><br>
--<br>
James Cameron<br>
<a href="http://quozl.linux.org.au/" target="_blank">http://quozl.linux.org.au/</a><br>
</font></span></blockquote></div><br></div>
</div></div></blockquote></div><br></div></div>