[Linux-aus] Remastering Fedora Core 4

Greg 'groggy' Lehey grog at lemis.com
Wed Jun 29 06:43:02 UTC 2005

On Tuesday, 28 June 2005 at 14:25:12 +1000, Del wrote:
> Greg 'groggy' Lehey wrote:
>> I've spent the weekend trying to create a custom version of Fedora
>> Core 4 (see http://www.lemis.com/grog/diary-jun2005.html#25).  All
>> works well (now) except for booting.  I can't find the bootstrap in
>> the directory tree (isolinux/isolinux.bin is the wrong size, and it
>> doesn't appear to be intended for CD booting), and I don't know of any
>> tools to extract it from the bootstrap area.
>> There's a whole lot of detail in the URL above, so I won't waste
>> bandwidth by repeating it here.  Does anybody have any pointers?
> In reference to your diary entry (which I did eventually find by
> scrolling down from the URL above),

Oops, sorry, should have been

> 1.44MB is NOT the correct size for an ISO boot image constructed
> with --no-emul-boot.  That's the correct size for the old emulated
> El Torito stuff but no longer correct these days for bootable DVDs
> and things.  A bootable ISO image is essentially a bootable ISO
> image -- not a bootable floppy disk image.  > Also, your script is
> fundamentally incorrect because you need to specify a boot image
> size with no-emul-boot.

When did you look at this entry?  In the version $Id:
diary-jun2005.html,v 1.40 2005/06/28 00:43:34 grog Exp $, I state:

   Sent a message out to the Australian Linux groups today about my
   DVD boot problems, and in the evening got a reply from Glen Turner
   pointing to the problem: turned out that the bootstrap was correct
   after all, but that I had a bug in my burn script (now corrected):
   there are at least two kinds of bootstrap you can put in an ISO
   image. The older style is the El Torito bootstrap, effectively an
   image of a floppy. The other is a native bootstrap, which can be of
   any length. That's what I wanted, and you specify it with the
   -no-emul-boot option.

   Not that that removed all problems: after that I could run the
   bootstrap, but it failed again:

   ISOLINUX 3.08 2005-05-19 isolinux: Image checksum error, sorry...

   More head-scratching to do there. I may actually have to install
   Fedora Core 4 to do it right.

This was up long before you sent this message.  Also, the script has
been fixed in $Id: mkcd,v 1.2 2005/06/28 00:31:29 grog Exp $.

On the other hand, for a general burn script -no-emul-boot is not
always right.  I've put it in there for now, but it really should be a
separate option.

Do you have any opinion on getting the image checksum correct?

The virus contained in this message was not detected.

Finger grog at lemis.com for PGP public key.
See complete headers for address and phone numbers.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 187 bytes
Desc: not available
Url : http://lists.linux.org.au/pipermail/linux-aus/attachments/20050629/0da5c8e7/attachment-0001.pgp 

More information about the linux-aus mailing list