Displaying 5 results from an estimated 5 matches for "lba3".
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2017 Mar 22
3
"isolinux.bin missing or corrupt" when booting USB flash drive in old PC
...s.bin>
Back to Thomas' debug prints.
You can download my logger version of isohdpfx called isohdpfd here:
<http://www.ludd.ltu.se/~ams/tmp/isohdpfd.bin>
<http://www.ludd.ltu.se/~ams/tmp/isohdpfd.S>
In the EBIOS case it will print:
E<LBA0>/<LBA1>/<LBA2>/<LBA3>/
<Big dump of first loaded sector>
Key?
and wait for a key press.
In the CBIOS case it will print
C<LBA0>/<C0>/<H0>/<S0>
<LBA1>/<C1>/<H1>/<S1>
<LBA2>/<C2>/<H2>/<S2>
<LBA3>/<C3>/<H3>/<S3>
&l...
2017 Mar 22
0
"isolinux.bin missing or corrupt" when booting USB flash drive in old PC
...by forcing isohdpfx.bin to fail the EBIOS test.
Wow. This could mean that the C/H/S related code is generally unsuitable
for the job.
> C<LBA0>/<C0>/<H0>/<S0>
> <LBA1>/<C1>/<H1>/<S1>
> <LBA2>/<C2>/<H2>/<S2>
> <LBA3>/<C3>/<H3>/<S3>
Anything strange to see with this sequence of addresses which are
supposed to be consequtive ?
Whatever, if this was only about confused addresses, then David would
probably see one of the blocks with numbered content.
The all-0 read result looks rather like t...
2017 Mar 24
0
"isolinux.bin missing or corrupt" when booting USB flash drive in old PC
...which part of EBIOS
detection fails:
<http://www.ludd.ltu.se/~ams/tmp/isohdpf_dump.2.tgz>
* If an EBIOS is not detected outputs:
* <X><LBA0>/<C0>/<H0>/<S0>
* <LBA1>/<C1>/<H1>/<S1>
* <LBA2>/<C2>/<H2>/<S2>
* <LBA3>/<C3>/<H3>/<S3>
* <Big hex dump of first loaded sector>
* Key?
*
* and waits for a key press.
* <X> is A if the EBIOS detection failed the extended disk access
* support bit, B if the EBIOS detection failed the BX signature and
* C if EBIOS detection failed w...
2017 Mar 21
3
"isolinux.bin missing or corrupt" when booting USB flash drive in old PC
Thomas Schmitt wrote:
> My main point of interest is which block is really loaded as first one
> of isolinux.bin.
[Program snipped.]
> (It could be shorter if i did not insist in big endian words.)
Why insisting?
Anyway appended is a dumper version. I could put up a binery version
if needed. Let me know if so.
--
MartinS
/*
2017 Mar 23
6
"isolinux.bin missing or corrupt" when booting USB flash drive in old PC
Hi,
Geert Stappers wrote:
> Contact David off-list, he did unsubscribe.
Can you tell when he unsubscribed (i.e. which of the messages he got
as last one) ?
> Martin posted elsewhere in this thread "Thomas, you found the bug"
> and provided a patch.
Open question is whether the fix helps with David's BIOS.
The newest answer from Martin indicates that a failure to read