[rescue] 10GB emulated drive and disk layout.

[Andrew Back]

On 24/01/2026 12:50, Mouse via rescue wrote:

>> This appears to go well until the installer runs newfs on the h
>> partition and at which point I get errors [and the label is
>> corrupted].
> 
> What has it done before then?  In particular, has it written any of the
> other partitions' filesystems?  If so, are they usable?

The miniroot was installed to swap (b) and booted fine and I could mount 
root (a) without issue.

> I'm also wondering if the problem is actually with the partition it
> wrote just before h; it could be that that one corrupted the label and
> nothing noticed until it went to newfs h.  What order does it write
> things in?

I need to retry this to be sure. I suppose I could also try manually 
using newfs instead of running suninstall, and seeing at what point the 
table appears to get corrupted.

> I massaged your layout text into readbility and had a look.  I would
> expect it to have written /usr and /var, at least, before doing /home,
> but maybe not; as I said, it's been a long time.
> 
>> The drive is defined as 19377c, 16h and 63s (10000392192 bytes).
> 
> Combined with the layout you gave, I note that h is the only partition
> beginning after the 8G point, which is the limit of 24-bit sector
> numbers.  If it writes the partitions in order, writing the end of g
> could have wrapped (eg, at the 8G point) and scribbled on the beginning
> of the disk, possibly including overwriting the partition table.

I guess I could try a layout that fits within 8G to see if that makes a 
difference.

Andrew