Re: Details on blocklist in stage2/stage1_5

[Yoshinori K. Okuji]

At Thu, 20 Jun 2002 10:51:04 -0600,
Jason Ivey wrote:
> Back to my original question, I think I understand what I needed to know
> about the block lists from looking at the install source.  Okuji, aren't
> the values in the run lists calculated at install time and not compile
> time?

Ah, you are right. I thought only about the first image but not about
modified images after installation. Sorry.

The last two bytes are a segment which is used to load sectors to
memory. The segment of the first entry is always 0x820 for Stage 2 and
0x220 for Stage 1.5. Each segment of the rest entries is calculated by
(the previous segment) + ((the previous number of sectors) >> 4). The
memory regions used are consecutive, so that information is considered
to be redundant, but it is used for convenience. See the function
"install_func" in the file "stage2/builtins.c", for more details.

Okuji