On 06/30/2015 03:19 PM, Rick Stevens wrote:
On 06/30/2015 03:17 PM, jd1008 wrote:
The link you refer to
talks about the 2 bytes past byte 255, they they are
bytes 256 and 257.
No, you set the block size to 2, so you are seeking (2 * 255) or 512
bytes into the disk.
Grrr! 2 * 255 = 510 bytes into the disk, so you were looking at bytes
510 and 511 (the last two bytes in the first sector).
But I already indicated the 466 bytes are null... in another usb drive I
tested,
thus no boot signature - and yet, bios hung forever because that disk
was 2nd
in boot order after cd/dvd drive, and before internal HD.
So, the laptop's BIOS is executing what? A good code for moving from disk
to disk until it finds the bootable drive in the boot sequence specified?
Clearly in this case - it does not do so.
And yet, you insist it is not a flaw.
On 06/30/2015 03:47 PM, Gordon Messmer wrote:
On 06/30/2015 02:28 PM, jd1008 wrote:
I already explained to you
1. The disk is partitioned using fdisk.
2. I cleared the 446 bytes to nulls.
3. None of the partitions have a boot signature.
The boot signature is at bytes 511 and 512, and you indicated that it
is present:
https://lists.fedoraproject.org/pipermail/users/2015-June/462295.html
Those bytes indicate to BIOS that the disk contains boot code. I
tested wiping those bytes and verified that SeaBIOS, at least, will
not attempt to run the boot sector of a disk after they are wiped.
You comment "bug" is not a word for "something I don't understand" or
"something I don't like."
is so totally irrelevant to what I have already reported wrt the
drive at hand and the BIOS at hand.
Such comments are sounding more and more like coming from an a*al
attitude!!
Computers are just machines that execute instructions. They don't
reason. They don't make decisions. Their design may not always be
the one you like, but that's not the same as being "buggy".
I'm trying to reasonably explain and demonstrate that you can predict
and control the computer's behavior, while you rant about Dell
"f***ing up." I think your anger is unjustified, both toward your
system's vendor and toward me. Maybe mellow out a little.
--
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- Is that a buffer overflow or are you just happy to see me? -
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