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Re: How to deal with fatal device seeks?


From: adrian15
Subject: Re: How to deal with fatal device seeks?
Date: Sun, 16 Mar 2014 17:05:53 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Icedove/24.3.0


I'm getting the same problem
( FATAL: int13_cdrom: function 42. Can't use 64bits lba )

with hd0, hd1, hd2, hd3, and worse:

* hd2,msdos5

ls (hd2,msdos5)/

Is this a bug?

adrian15

El 16/03/14 06:26, adrian15 escribió:
   I use a for loop for detecting Operating systems like this one:

for dev in (*); do

   echo $dev

done

but it hangs !!!

So some clues:

* Using 2.02~beta2-7 from Debian Unstable.
* The disk is an hybrid one (x86_64_efi + i386_pc).
* The error only happens when using Virtualbox in a non-EFI setup.

So some questions:

* Is it a bug that a non seekable device like (cd,apple4) or (cd,gpt1)
is available in non-EFI mode?
* Is it perhaps a Virtualbox bug?
* I cannot catch these fatal error as if they were exceptions inside a
try-catch. Or can I?

I will probably improve my searchindevices functions so that it also
filters these (cdsomething) devices as a workaround.

Thank you.


These are the minimal tests:

--- Using Qemu as EFI gives no problem:

echo (*)
(fd0) ... (cd) ... (cd,apple2),... (cd,gpt2)
ls (cd,apple4)/
error: unknown filesystem.
ls (cd,gpt1)/
error: unknown filesystem.

--- Using Virtualbox as BIOS (Ex. 1) (Problem):

echo (*)
(fd0) ... (cd) ... (cd,apple2),... (cd,gpt2)
ls (cd,apple4)/
FATAL: int13_cdrom: function 42. Can't use 64bits lba

--- Using Virtualbox as BIOS (Ex. 2) (No problem):

echo (*)
(fd0) ... (cd) ... (cd,apple2),... (cd,gpt2)
ls (cd,gpt4)/
error: unknown filesystem.

--- Using Virtualbox as BIOS (Ex. 3) (Problem):

echo (*)
(fd0) ... (cd) ... (cd,apple2),... (cd,gpt2)
ls (cd,gpt1)/
FATAL: int13_cdrom: function 42. Can't use 64bits lba


adrian15

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