Syslinux - Mar 2010 - Req

[1}
Gert Hulselmans wrote:
>
> ...Thanks.
>
> I still think chain.c32 should be able to do a reverse partition 
> lookup, to determine from which partition it was booted. This would be
> useful to boot ntldr, setupldr.bin, bootmgr, grldr, ... when you want 
> to boot it from the same partition as from which SYSLINUX is booted, 
> without specifying the partition explicitly to chain.c32.
>
> Eventually only when a parameter is added like "bootpartition":
LABEL
> grub4dos
>    COM32 chain.c32
>    APPEND bootpartition file=/grldr
>
 
Ok.  How about this patch[1]?  (Also attached.)  The option is "fs", 
meaning the "current" Syslinux booted-from disk and partition (if 
applicable).
 
boot: chain -?
...
boot: chain fs cmldr=/cmldr
-----
LABEL cmdcons
  COM32 chain.c32
  APPEND fs cmldr=/cmldr
 
- Shao Miller
 
[1] 
http://git.etherboot.org/?p=people/sha0/syslinux.git;a=commitdiff;h=bf3b
87fac3978d82dba27319ac3650c442959168
 
 
[2]
On 30 March 2010 : Miller, Shao Wrote:
I've been very busy and so I apologize.  Please send this request to the
Syslinux mailing-list.  I will try to respond.  - Shao
  _____  

From: Prof S W Damle [mailto:swdamle at bsnl.in] 
Sent: Monday, March 22, 2010 03:10
To: Miller, Shao
Subject: Req
 
Hello,
With reference to your e-mail > Fri 12-Mar-10 12:12 AM >Sub: Re:
[syslinux] Recovery console doesn't work in chain.c32 3.85or3.86-pre1
 
You are requested to state the step by step procedure to follow (i)How
to use the patch provided, and (ii)open "Windows Recovery Console"
 
With regards,
Prof S W Damle

Good day Prof S W Damle,

In regards to your requests:
   (i) How to use the patch provided
  (ii) Open "Windows Recovery Console"

Please see below.

(i) Using the "fs" patch for chain.c32

Please note that Gert Hulselmans and I found a problem with this patch
and logical partitions.  I will re-work this patch again and submit the
results for Syslinux 3.87.

Steps to use the patch:

1. Install 'git', 'perl', 'nasm' and any other Syslinux
build
dependencies
2. Working in your favourite directory, execute the following:

  git clone git://git.kernel.org/pub/scm/boot/syslinux/syslinux.git

3. This should result in a "syslinux" directory.  'cd
syslinux'
4. You'd like to use the chain.c32 patch provided, which you can fetch

  git remote add shao
git://git.etherboot.org/scm/people/sha0/syslinux.git
  git fetch shao
  git checkout shao/chain_fs
  git checkout -b chain_fs

5. Build Syslinux with 'make'
6. The patched chain.c32 will be built in com32/modules/

(ii) Using chain.c32 to run the Microsoft Windows XP/2003 Recovery
Console

When you install the Recovery Console, you should see the following
additions to your boot drive:

\CMDCONS\
\cmldr

You can copy these to a FAT partition with XCOPY.EXE.

C:\>xcopy /e /h cmdcons f:\cmdcons\
...
 Many files copied.
C:\>copy cmldr f:\
 1 file(s) copied.

You can install SYSLINUX to that FAT partition.  Your SYSLINUX.CFG file
can include:

LABEL cmdcons
  COM32 chain.c32
  APPEND hd0 1 cmldr=cmldr

The above assumes that the partition is the first primary partition on
the first HDD.  If it isn't adapt your "hd0 1" accordingly.

Enjoy.

- Shao Miller