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tusk

Grub4DOS booting from dvd?

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been playing with Grub4DOS (bloody great little thing!)

here's where i think i'm being difficult or maybe just not understanding whats already explained (too much caffeine, not enough sleep!)

I have built up a multiboot USB (16gb), that has XP Home/Pro/MCE, all vista & 7 (32 & 64bit), Bit defender, UBCD, MEMtest, Ophcrack & some other bootable recovery tools. This all works 100%, but I want to build it up on a dual layer DVD, mostly as we get some awkward systems that don't boot from USB or LAN, but have DVD-DL drives (or the ability to add one). Also it means i can carry 1 dvd, instead of about 15 cd's/dvd's!

With the optimize option in oscdimg.exe, i get from an 8.4GB drive to a 7.4GB ISO (perfect for DL), but it wont boot. Everything I tried it on gives the following error:

Try (hdd0,0): NTFS5: No grldr

Try (hdd0,1): NTFS5: No grldr

Try (hdd0,2): NTFS5: No grldr

Try (hdd0,3): NTFS5: Invalid or null

BIOS: Drive=0x0, H=1, S=1

Try (fd0): invalid or null

Cannot find grldr

Press space bar to hold the screen, any other key to boot previous mbr....

The oscdimg command i used is

oscdimg.exe -d -u1 -o -bd:\super_aio\boot\syslinux\grldr.mbr

What am I doing wrong? Am i asking the impossible or just being plain stupid - be honest, only way i learn!

If its not possible, anyone got a suggestion of getting non-usb or PXE booting computers to work via a cd option? not something i've looked at, so any suggestions welcome!

Thanks in advance!

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OK, after some much needed sleep & a good walk to work in the lovely English weather (its raining, cold & windy) I have decided I have been somewhat retarded.

The grldr.mbr is looking for grldr on a hdd or fdd, not a optical drive! Think i need to modify that file! lol

I'll post any findings or more questions on here as i get there!

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OK, after some much needed sleep & a good walk to work in the lovely English weather (its raining, cold & windy) I have decided I have been somewhat retarded.

The grldr.mbr is looking for grldr on a hdd or fdd, not a optical drive! Think i need to modify that file! lol

I'll post any findings or more questions on here as i get there!

Not really.

WHICH EXACT version of grub4dos are you using? (depending on the version you might need to check CaSe of the grldr - or GRLDR file)

WHY are you using grldr.mbr? :w00t: (the file to be used as no-emulation bootsector is grldr and NOT grld.mbr).

jaclaz

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OK, after some much needed sleep & a good walk to work in the lovely English weather (its raining, cold & windy) I have decided I have been somewhat retarded.

The grldr.mbr is looking for grldr on a hdd or fdd, not a optical drive! Think i need to modify that file! lol

I'll post any findings or more questions on here as i get there!

Not really.

WHICH EXACT version of grub4dos are you using? (depending on the version you might need to check CaSe of the grldr - or GRLDR file)

WHY are you using grldr.mbr? :w00t: (the file to be used as no-emulation bootsector is grldr and NOT grld.mbr).

jaclaz

That's probably where I'm going wrong then!

It's Grub4DOS 0.4.4.

I've checked the case & used the -d switch to force lower case, but will triple it check it (it's been a long few days!)

I'm out of DVD-DL at the moment, so cant test it here at work :( have to wait until i get home to test it again!

Thanks for the help jaclaz :) its appreciated!

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The grldr.mbr is looking for grldr on a hdd or fdd, not a optical drive!

Yes, use grldr as boot file: -bd:\super_aio\boot\syslinux\grldr

Test this at available BIOS. You may use a CD-RW for basic testing.

It's Grub4DOS 0.4.4.

Use a current version instead http://code.google.com/p/grub4dos-chenall/downloads/list

Grub4dos is case sensitive at case sensitive file system.

Use something like

chainloader /bootmgr || chainloader /BOOTMGR

I've checked the case & used the -d switch to force lower case

Select file systems and extensions for your collection. That's difficult decission.

I'm out of DVD-DL at the moment

There are virtual machines for testing.

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Just for the record "0.4.4" makes NO sense. :w00t:

The 0.4.4 (as well as current 0.4.5 "series") is identified by an ADDITIONAL date.

Latest of the 0.4.4 series (recommended) is this one:

Better :thumbup if you use a later version (of the 0.4.5 series, from the site cdob gave you)

jaclaz

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Cheers guys! Didn't get a chance last night to try it, ended up chilling with the misses!!

There are virtual machines for testing.

Don't use a virtual machine on my laptop, its WAY too slow, installed a mini-xp tester & it took 20mins to get to a boot screen :( Really need a new laptop! :P

I have some time today at work, along with a few discs, so will hopefully give it a shot! :)

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Ok decided to give up!

Just going to a bootable USB with a kickdisk. :}

After optimization, i can get it to a 10GB iso (ish), so not going on a DVD.

On the plus side have learnt some more stuff about Grub (so not a huge loss!)

B)

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Your disk sounds quite useful tusk. I sent you a PM regarding it.

Cheers and Regards

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Ok decided to give up!

Giving up is NEVER an option! :realmad:

sad-cat.jpg

:(

jaclaz

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Giving up is NEVER an option! :realmad:

:lol: well, trying to squeeze it down further is the killing point of the project!

But, USB + kickdisk = kick a** on old BIOS's :P

I managed to get it down from 14GB to 10GB, but no way a DVD-DL will handle it. Not to mention that the Vista & 7 bootmgr's being difficult.

I have decided though to follow both of these ideas to create a nice multiboot USB with not only Windows XP/Vista & 7 installers, but also some linux based utils too! Got a few days off next week to play with both these ideas, so will see what happens!

The links i've been thinking of are the following -

02 - How to create a USB drive that will install one of many choices of Windows OS's (Vista/Win7/Server 2008/XP)

&

Create a Multiboot Multipartition USB with Syslinux and Grub4Dos

Suppose best do some "work" now as I'm actually at work & being paid - although nothing to do & no boss present! ;)

Edited by tusk

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