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Revive an old boot method


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#1 The Old Guy

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Posted 29 September 2011 - 11:09 PM

Back in the early CD days there were many computers incapable of booting from a CD. as the CD became more popular and more programs was installed from a boot CD this limit needed to be addressed. One answer was a floppy drive that started the boot process from the floppy then switched the boot over, or chainloaded to the CD.

My HP DV6000 laptop has oly room for 1 HD but I installed a second HD a DVD case which allows me to run both Linux and Win7. I can always access the DVD from an exterior USB drive but BIOS does not allow booting from external USB connected DVD. I can boot from a stick USB drive but find I can't always get them to boot the ISO I want booted (usig both RmPrepUSB ad YUMI).

While trying to install Mandriva 2011 from USB I discovered that it called for the DVD. I inserted the DVD in the external drive - rebooted from the USB ISO and when the DVD was called for the installation could continue from the DVD and I was able to complete it.

Is there any program that will duplicate what I now know works - ie start the boot from pen drive and transfer it to the external DVD once the USB driver is loaded.

Would any of you wise folks have a solution for my challenge so that I can always boot from my external CD/DVD?

TIA
TOG

#2 Wonko the Sane

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Posted 30 September 2011 - 08:22 AM

Would any of you wise folks have a solution for my challenge so that I can always boot from my external CD/DVD?


PLoP:
http://www.plop.at/en/bootmanager.html
but if you already have USB booting support in BIOS, grub4dos may also do, though it is possible that the external CD/DVD is not mapped by BIOS (and then you will need PLoP)

:cheers:
Wonko

#3 MedEvil

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Posted 30 September 2011 - 09:31 AM

As far as i know, Plop does not support USB CD drives.

:cheers:

#4 Wonko the Sane

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Posted 30 September 2011 - 06:51 PM

As far as i know, Plop does not support USB CD drives.


You are right, my bad :blush: I thought that it was added recently, I must have been dreaming :w00t::
http://www.plop.at/e...nager.html#faq2

With no available BIOS extension, then it will depend entirely on the on-board BIOS, if it offers a "hook" for grub4dos it may work, if it doesn't it won't. :(

:cheers:
Wonko

#5 The Old Guy

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Posted 02 October 2011 - 05:42 PM


With no available BIOS extension, then it will depend entirely on the on-board BIOS, if it offers a "hook" for grub4dos it may work, if it doesn't it won't. :(

:cheers:
Wonko


How would I know if it offers a 'hook' and how could I use it?

TOG

#6 Wonko the Sane

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Posted 02 October 2011 - 06:02 PM


How would I know if it offers a 'hook' and how could I use it?

TOG


You try adding grldr to your "normal" internal disk boot and try booting the thingy with the USB DVD connected.
If grub4dos can find a (cd) device or (I doubt this) after a cdrom --init and map --hook you get a (cd1) device it means that it can *somehow* see the device.

But if the problem is booting a Linux distro CD, the way you used is simple enough. (or. most probably you can make a menu.lst entry capable of loading the .iso "fully" or with a "mixed mode approach") or try use the GRUB2 iso mapping capabilities.

As always happens your mileage may vary :ph34r::
http://reboot.pro/8944/

The old version of Mandriva was a hybrid that could be used from USB stick as well:
http://www.pendrivel...dows/#more-4511
canoot say the 2011 version.

:cheers:
Wonko




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