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<tt>ACS wrote:</tt>
<blockquote type="cite" cite="mid:62AFCFA080E84435BBDC4C2B4E5288B7@Olidata7">
<title>Re: [gPXE] Booting MS-DOS using gPXE/iSCSI: C: drive is read
only</title>
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<p><tt><font size="2"> <a href="mailto:Shao.Miller@yrdsb.edu.on.ca" class="moz-txt-link-rfc2396E"><Shao.Miller@yrdsb.edu.on.ca></a> wrote:<br>
<br>
> Are you connecting multiple clients to the same iSCSI target at
the same<br>
> time?<br>
<br>
I only connect to iSCSI target using a single initiator at a time, I'm
aware<br>
that most file systems aren't network filesystems.<br>
</font></tt></p>
</blockquote>
<tt><br>
Excellent. :) Some folks are not aware of that.<br>
<br>
</tt>
<blockquote type="cite" cite="mid:62AFCFA080E84435BBDC4C2B4E5288B7@Olidata7">
<p><tt><font size="2">I already tried 2 targets, both exhibit the
same problem (even after<br>
restarting target service or server):<br>
-centos5.3 ietd<br>
-server 2008x64: microsoft iscsi software target<br>
<br>
<br>
I have 2 guesses why MS-DOS can't write to disc:<br>
<br>
-There's no scsi driver loaded in DOS, and DOS only has limited built-in<br>
SCSI read capabilities to just start and get scsi driver loaded.<br>
</font></tt></p>
</blockquote>
<tt><br>
DOS uses INT 13h to access an iSCSI disk. To DOS, it's not really
distinguishable from a local HDD. But a question: Are you loading
network drivers in this DOS?<br>
<br>
</tt>
<blockquote type="cite" cite="mid:62AFCFA080E84435BBDC4C2B4E5288B7@Olidata7">
<p><tt><font size="2">-The gpxe boot rom is read-only, after OS gets
started more advanced<br>
drivers should take over , giving write capabilities<br>
</font></tt></p>
</blockquote>
<tt><br>
gPXE provides the INT 13h service for DOS or other INT 13h consumers
with read and write. Another question, though: How did you format this
partition? From DOS or from Windows or from some other OS?<br>
<br>
</tt>
<blockquote type="cite" cite="mid:62AFCFA080E84435BBDC4C2B4E5288B7@Olidata7">
<p><tt><font size="2">Again, these are just guesses.<br>
<br>
Seems like AoE is the way to go, since this just simulates ata disk,
which<br>
should work right away<br>
</font></tt></p>
</blockquote>
<tt><br>
AoE is provided by gPXE the same as iSCSI, with the same INT 13h
service.<br>
<br>
- Shao Miller<br>
</tt>
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