wont boot into grub for first time, scsi problem?

McVeigh

I am new to scsi as well as gentoo, but this AM I finished installing everything, I thought I followed the GRUB explanation exactly but upon reboot it come sto a prompt that says "grub" and thats it. I can't type anything only do a manual reboot. I was wondering id (hd0,0) needs to be something different on scsi drive?
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Guest · Posted: Thu May 02, 2002 5:12 pm Post subject:

My experience have showed that if you have one or more IDE drives in your computer, those are placed before any scsi drives. For example, my computer has 2 IDE drives and one SCSI drive, I want to boot on the SCSI drive. When I install grub I have to name my SCSI drive hd2 since the IDE drives are hd0 and hd1.

McVeigh · Posted: Thu May 02, 2002 5:29 pm Post subject:

well i disabled my ide hard drives after that grub problem and still nothing.

the commands i used told it to write to hd0,0 but I still have my original grub loader on my ide drives.

how can I get back to the point I was (almost done) to try and fix things?
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Seth

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AutoBot · l33t Joined: 22 Apr 2002 Posts: 968 Location: Usually Out

Boot from the gentoo disk and mount your partitions, then edit your GRUB file to suit your needs and reboot.
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McVeigh · Posted: Thu May 02, 2002 10:02 pm Post subject:

any ideas on what to tell grub exactly?
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Seth

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McVeigh · Posted: Sat May 04, 2002 9:32 pm Post subject:

got IT!!

i disconnected my ide drives so scsi was the only one!!, now I downloading X and kde!!
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Seth

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jlenski · n00b Joined: 24 Apr 2002 Posts: 2 Location: Tennessee

I have the same problem but so far have not found a satisfactory solution. I have an IDE CD-ROM drive in my system and two SCSI drives (no IDE hard drives). All went fairly well during the install but it hangs at reboot showing GRUB on the bottom of the screen. For the moment, my workaround has been to build a grub boot floppy, copy all the files from /boot/grub and the bzImage to the floppy. Of course, I had to edit menu.lst to point to the new file locations, but in the end it worked. (BTW, Linux Step-by-Step is a big help http://www.linux-sxs.org)

Any ideas on why GRUB hangs? It sure would be nice (and faster) to boot from the hard drive.

jlenski · n00b Joined: 24 Apr 2002 Posts: 2 Location: Tennessee

Well I have it figured out now. I read most of the GRUB manual but didn't get into the FAQ. Having gone over the manual several times I finally found the following:

GRUB hangs up when accessing my SCSI disk.
Check if you have turned on the support for INT 13 extension (LBA). If so, disable the support and see if GRUB can now access your SCSI disk. This will make it clear that your SCSI BIOS sucks. For now, we know the following doesn't provide working LBA mode:

Adaptec AIC-7880

Now that INT 13 extensions are off, GRUB boots just fine.

tsuru · Posted: Fri May 10, 2002 10:37 pm Post subject:

well I went a load of trouble getting a dual boot gentoo working with a SCSI drive being the first drive I want to boot off of so I will post the device.map and menu.lst file that I have hopefully it will shed much light on the problem... I am using and Adaptec controller myself and didn't have to change the INT 13 deal

/boot/grub/device.map -- needed because even though I select SCSI as my first boot device in the BIOS, GRUB doesn't see it... so it's time to do some brute force

McVeigh · Posted: Sat May 11, 2002 3:07 am Post subject:

interesting!, I never knew about the device.map function, this should be in the documentation. :lol:

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Seth

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Psychephylax · n00b Joined: 10 May 2002 Posts: 44 Location: Smithtown, NY

To set up ssh just

McVeigh · Posted: Sat May 11, 2002 4:13 am Post subject:

ummm what does this have to do with the topic? :oops:

but a good tip!
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Seth

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Psychephylax · n00b Joined: 10 May 2002 Posts: 44 Location: Smithtown, NY

Nothing

But I looked at your sig and figured I might save you a thread in the future since ssh was on the list of things for you to do... Plus, I need sleep

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McVeigh · Posted: Sat May 11, 2002 1:11 pm Post subject:

thanks!

actually I had ssh installed I just had problems getting passwordless authentiaction againsta redhat system, but I finally got figureed out.
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Take Care,

Seth

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