Gentoo Archives: gentoo-user

From: andrea <momesso.andrea@×××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Grub hangs when a USB disk is attached
Date: Fri, 29 Feb 2008 18:57:43
Message-Id: 1204311290.4814.4.camel@fandango
In Reply to: Re: [gentoo-user] Grub hangs when a USB disk is attached by Don Jerman
1 On ven, 2008-02-29 at 13:00 -0500, Don Jerman wrote:
2
3 > When the usb disk is attached after boot the BIOS doesn't give it a HD
4 > number in the series 0x80,0x81, etc, where 0x80 = (hd0) in grub or
5 > /dev/sda. The OS handles all the controller events and connects the
6 > USB device up through udev.
7 >
8 > When it is attached at boot-time it does get one(!) because the BIOS
9 > sees it before the OS has hooked in.
10 >
11 > To accomplish this you probably need to boot from the CD while the USB
12 > is attached. To me it seems risky, but possible. I wonder what will
13 > happen when you disconnect the USB drive after booting is complete?
14
15 No way. Even if booting from a livecd (and the usb disk is seen as
16 (hd0,0) grub unstall still complain about missing BIOS driver.
17
18 I also tried from the grub shell:
19 grub> root (hd0,0)
20 grub> setup (hd0)
21 but at this point the program exits whit a segmentation fault message.

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Subject Author
Re: [gentoo-user] Grub hangs when a USB disk is attached Don Jerman <djerman@×××××.com>