Gentoo Installed, but now Windows doesn't boot..

Rukie

I get a blue screen saying inaccessible boot device... is this somethign gentoo has caused? Or do I have to reinstall Win2k now?

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ekutay · l33t Joined: 30 Mar 2005 Posts: 636 Location: Berlin

What is your boot configuration? Do you use lilo, grup or the NT loader to boot your system?
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signature16 · Tux's lil' helper Joined: 31 Aug 2005 Posts: 79

dont reinstall windows....it will erase the mbr.

if you put the windows cd in and start up their is a repair option. im not quite sure what it does but its worked for me before

olger901 · l33t Joined: 17 Mar 2005 Posts: 625

Check if your grub configuration is set properly
Note: In grub hd0,0 is in fact hda1 so set it to for example 0,4 if your windows partition is /dev/hda

title=Windows XP
rootnoverify(hd0,0)
makeactive
chainloader +1

Rukie · Posted: Mon Sep 05, 2005 3:36 pm Post subject:

I use grub,

Drive0-Gentoo
Drive1-Windows
Drive2-Extra Storage.

Title Windows 2k
root (hd1,0)
makeactive
chainloader +1
map (hd0) (hd1)
map (hd1) (hd0)

I use the map, else Windows won't start up...
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DrBob · n00b Joined: 05 Sep 2005 Posts: 2 Location: England

Rukie · Posted: Mon Sep 05, 2005 5:24 pm Post subject:

Actually, you don't need the = sign with grub

Also, I use root because its a vfat partition..

I used it so linux has better support for reading whats on the drive.

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bltngshp · n00b Joined: 20 Jan 2005 Posts: 54

I'm dual booting Windows 2000 and Gentoo with Grub on my laptop. I have no problems. This is my Windows Entry in grub.conf

kawsper · Posted: Mon Sep 05, 2005 6:51 pm Post subject:

Remember that Windows want to have the bootable flag. I have experienced the same as you. And this did solve it.
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drwook · Veteran Joined: 30 Mar 2005 Posts: 1324 Location: London

My money's on you needing to put in 'map' lines - windows hates to be on anything but the primary master in my experience.

Rukie · Posted: Mon Sep 05, 2005 8:03 pm Post subject:

I have map lines... and I'm pretty sure there is a bootflag on the partition windows is on...

vfat = fat32
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jmbsvicetto · Posted: Mon Sep 05, 2005 8:55 pm Post subject:

Hi Rukie!

Did you install GRUB into (hd1,0) by mistake? If not, did you move the Windows XP disk from master to slave? If so, does it boot if you put it as master?
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Rukie · Posted: Tue Sep 06, 2005 3:00 am Post subject:

grub is installed into the right partition (hd0,0) but I could have changed win 2k from master to slave.. not sure.. have to check

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maglomanic · Tux's lil' helper Joined: 28 Jun 2004 Posts: 93

Ok it might not be the case for you but i just created a dual boot windows XP and gentoo

windows XP hda2
gentoo(Root) hda6
gentoo(boot) hda3

all that i did was

Title=Gentoo
root(hd0,5)
kernel / kernel name and few command(s)
initrd /initrd name

Title=windows XP
root (hd0,1)
makeactive
chainloader +1

since you have two hard drives you ll have to map them for sure. thats something i had to do when i had gentoo on my desktop with two hard drives.
Now this time round my dual boot wasn't working for some strange reasons.
the windows partition wont work if i dont have a space between root and (hd0,5) and gentoo doesnt work if there is any space between them.
Also rootnoverify (hd#,#) is if you didnt use genkernel. for genkernel you just use root (hd#,#).thats what i read in install.txt (i dont trust it anymore by the way i have screwed up my portage tree big time

).
Hope it helps.
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maglomanic · Tux's lil' helper Joined: 28 Jun 2004 Posts: 93

Also forgot to tell you one thing.

if you think it's not GRUB and something is wrong with your windows you can always use dos FDISK to fix your MBR and try to boot to see if windows is not corrupt.

get dos FDISK (not the one on livecd or rescue disk) and copy it on a bootable floppy and on prompt run this command

Fdisk /MBR

after this GRUB will be wiped from the MBR. But you can always reboot usin live cd and reinstall GRUB on MBR again.
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Rukie · Posted: Tue Sep 06, 2005 4:06 am Post subject:

What about the MBR on other hard drives, do they matter?
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maglomanic · Tux's lil' helper Joined: 28 Jun 2004 Posts: 93

The MBR for the disk which is flagged for boot matters.

edit: ok i misunderstood your question. the command that i gave you works like that if you have only one hard drive. You 'll have to find out how to fix the MBR of a specific drive. shouldnt be problem though.I'll see if i can find it out for you

When i had two different hardrives i was using jumper seeting to achieve that. It can also be done using BIOS settings (i havent done it though).
You can set the jumpers to make one master and the other slave. or you can set both of them on AUTO(CABLE) select (if they have this feature) and attach them to the bus in the order you want them to boot.

hope it helps
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maglomanic · Tux's lil' helper Joined: 28 Jun 2004 Posts: 93

ok here is the link that explains it

http://support.microsoft.com/kb/q69013/

bltngshp · n00b Joined: 20 Jan 2005 Posts: 54

I'm sorry. I still don't see why grub mounting the partition as opposed to grub not mounting the partition (root versus rootnoverify) would make any difference in Windows 2k on a vfat partition. I'm almost wondering if grub mounting that partition is causing it to be hidden from Windows. If this was the case, wouldn't it just be:

Taladar · Posted: Tue Sep 06, 2005 3:59 pm Post subject:

You only need rootnoverify if there is no filesystem driver for grub for the filesystem on the partition.

Rukie · Posted: Fri Sep 09, 2005 1:59 am Post subject:

I tried unhide, it didn't work..
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jmbsvicetto · Posted: Fri Sep 09, 2005 10:40 am Post subject:

Rukie,

have you tried booting from the Windows disk? Does it work? If not, you'll probably have to fix Windows by booting with the install cd, opening the recovery console and running fixboot.
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Your twisted, but hopefully friendly daemon.
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maglomanic · Tux's lil' helper Joined: 28 Jun 2004 Posts: 93

If you are refering to Windows install CD.
it asks for adminstrative password (for windows XP you need to check for win2k).
and if you dint have your adminstrative password you r in bad luck.
It' ll be better to use Dos Fdisk on a bootable floppy.
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jmbsvicetto · Posted: Sat Sep 10, 2005 1:51 pm Post subject:

maglomanic · Tux's lil' helper Joined: 28 Jun 2004 Posts: 93

I fixed the whole windows partition and the only thing it asked for was serial number. and for that you dont have to go to recovery console. i did it using windows XP installation cd.
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