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Date:      Sat, 16 Aug 1997 22:29:16 -0400
From:      Pierre Sarrazin <ps@CAM.ORG>
To:        freebsd-questions@FreeBSD.ORG
Subject:   Debian knocked out my FreeBSD system...
Message-ID:  <33F661FC.1B36@cam.org>

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I can't boot under my FreeBSD 2.2.2-RELEASE system since I tried to
install Debian GNU/Linux 1.3.1... Here are the details.

I have a 1912M IDE hard disk (primary IDE controller, master disk).
I also have an IDE CD-ROM as a slave on the same controller. This disk
was initially partitioned in 4 equal parts of 478M each:

- bootable DOS 5.0 (FAT 16) partition that now contains Windows 95
  and is the C: drive;
- FreeBSD 2.2.2-RELEASE;
- FAT 16 (D:);
- FAT 16 (E:).

A boot time, a driver installs itself in order to allow this large
disk to be used with an older BIOS. It was necessary with the previous
motherboard, but the current motherboard is very recent and does not
need it. I left the driver there anyway to avoid trouble.

I used the Debian 1.3.1 binary CD-ROM to install Linux on the 3rd
partition (drive D: up to then). The installation went well, except
for the installation of packages, which apparently corrupted the
whole Linux system and beyond...

Later, I tried to boot FreeBSD, but the kernel loader could not
find the kernel... The "Boot:" prompt appears and after the normal
delay, instead of finding the kernel and booting it, the screen said:

dosdev= 80, biosdrive = 0, unit = 0, maj = 0
Can't find /kernel

Saying "?" does not produce anything: it looks like the loader can't
read the file system.

I tried "wd(0,a)/kernel" and "wd(0,b)/kernel", but the loader said
it could not find that either. I also tried those two names with a
1 instead of the 0, but then I got an infinite repetition of this line:

Error: D:0x81 C:0 H:0 S:0

I suppose that wd(1,?) refers to the CD-ROM or to a drive I don't have,
so this failure is expected.


Is there a possibility of recovering my FreeBSD system? (I have
backups to the important data, so this is not dramatic.) Is this
something that happens often when installing Linux?

-- 
Pierre Sarrazin <ps@cam.org> [Montreal]





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