Displaying 2 results from an estimated 2 matches for "boot_sequence".
2017 Mar 19
1
"isolinux.bin missing or corrupt" when booting USB flash drive in old PC
Thomas Schmitt wrote:
> I ponder whether it would be possible to create a diagnostic MBR
> which does not necessarily have to boot but rather tells what the
> isohybrid MBR would perceive: Presence of partition table,
> EBIOS or CBIOS, block address used with INT 13, content of the block
> read by the first INT 13, ...
...
> The diagnostic MBR should only use 432 bytes because at
2017 Mar 19
1
"isolinux.bin missing or corrupt" when booting USB flash drive in old PC
...0x7c00. It's most likely is isolinux as
it has confirmed the signature (the part that fails for David which
started this thread), right?
> I know the number 0x7c0 (i.e. with one "0" less) as the default
> "Load Segment" of El Torito.
> http://wiki.osdev.org/Boot_Sequence#Master_Boot_Record
> says "0x0000:0x7c00" and "0x7c0:0x0000 " are the same. Shrug.
Welcome to more gifts from Intel. Read
<https://en.wikipedia.org/wiki/Real_mode>. In short every address has
sixteen diffent aliases: 0x7c0:0x0000, 0x7bf:0x0010, 0x7be:0x0020,
0x7bd:0x...