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Q: Booting from a PCMCIA CDROM drive ( Answered 5 out of 5 stars,   1 Comment )
Question  
Subject: Booting from a PCMCIA CDROM drive
Category: Computers > Hardware
Asked by: geoffeg-ga
List Price: $25.00
Posted: 06 Jun 2002 07:07 PDT
Expires: 13 Jun 2002 07:07 PDT
Question ID: 23249
Is it possible to boot from a CDROM on a machine without a bootable
CDROM drive?

I have a laptop that has an external PCMCIA CDROM drive and I have a
CD I need to boot from (the System Recovery CD). Now, originally the
laptop came with a CDROM drive that would let you boot from it but
that drive broke and I bought a replacement drive (a TARGUS 24x PCMCIA
drive). The laptop doesn't seem to want to boot from the replacement
drive, although it will boot from the (external USB) floppy drive.
Targus supplies software (on a floppy disk) that allows you to access
the CDROM drive in DOS (assigns it a drive letter) but that still
doesn't help me since my System Recovery CD needs to be booted in
order to start the recovery. I've looked through BIOS and messed with
settings endlessly, nothing helps.

What I am looking for is some kind of software (DOS or something, this
machine has NO OS on it currently) that can transfer control of the
system to the bootable part of a CDROM. Maybe in the same way that
loadlin for linux unloads DOS and transfers control to a kernel.
Regardless, I need a way to boot from the bootable part of the CD.

Thanks,
Geoffeg
Answer  
Subject: Re: Booting from a PCMCIA CDROM drive
Answered By: chromedome-ga on 06 Jun 2002 08:54 PDT
Rated:5 out of 5 stars
 
Hi, Geoffeg!

As a long-time computer retailer I can assure you, you're not alone. 
This sort of thing happens all the time to the guys selling them and
putting them together, believe me!  That's how all my hair got pulled
out, over the years.

The most straightforward way out of your problem does not require a
fancy program, just the use of another computer. You may need to call
in a favour, or drop in on your computer store of choice for some
assistance.  In my neck of the woods, the retailers are usually happy
to help as long as you call first and don't arrive unannounced at the
busiest time of the day/week.

The problem basically breaks down this way: You can't load your OS
until you boot from the CD, you can't boot from the CD because of the
PCMCIA issue, and if you boot from a floppy, the restore won't work
right unless it's the OS's coincide.  So here's Plan A:

Manufacturers often put a "hedge" into their restore CD's for just
such occasions.  It's a program to create a bootable diskette which
will intitiate your restore for you.  Put your restore CD in the
borrowed computer.  Browse it in Windows Explorer, or use the
START/FIND program, (whichever you prefer) and look for a program
called "bootdisk" or some variation thereof.  On my restore CD, for
example, it is in the "command" directory.  If a program like that is
on your CD, you're home and cooled out.  Pop in a disk, and go to it!

If you're not that lucky, there is a Plan B.  What I've done
(successfully)in similar circumstances:

1) Lay hands on the other computer, through a friend or at your
computer store of choice.

2) Boot the other computer from your Master Restore CD.  These are not
usually transferrable from one machine to another, but you don't need
to boot completely...

3) Interrupt the boot process by holding down the right shift key as
the machine boots.  You want to choose the "command line" option.

4) Place a blank, formatted disk in the A: drive.

5) Type in at the prompt: "sys a:"  (no quotes).  This command
transfers the system files you've booted with (restore CD) to the
blank diskette.

At this point, you will have a diskette that can be used to boot your
computer to a DOS prompt.  Essentially, what we've done is what takes
place **up to this point** when your system boots from the recovery
CD.

Now, on your recovery CD there will be startup files to take you the
rest of the way.  On the ones I've worked with, it was usually our old
DOS friend, autoexec.bat.  So, from the command prompt, type
<driveletter>:\autoexec.bat
and you should be on your way.

I've made the assumption here (because you mentioned DOS in your
question) that you are familiar with basic DOS functions.  If this is
not the case, or if you find my instructions difficult to follow,
please request clarification and we'll do this some more.

This is an inelegant workaround, but it has the advantage that it
works, and I can verify that from personal experience.

Good luck, and let me know if you encounter any complications!
geoffeg-ga rated this answer:5 out of 5 stars
Good description and lengthly description.

Comments  
Subject: Re: Booting from a PCMCIA CDROM drive
From: siddiqui-ga on 22 Jun 2002 07:17 PDT
 
Check the following URL. Targus got all the info for you online.

http://www.targus.com/Downloads/PA950v1_startup.pdf

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