Re: minor problem with find-boot-device

[Steffen Kaiser]

On Tue, 3 Aug 2004, Patrick J. LoPresti wrote:
Hello Pat,
Look under /sys/firmware/edd/int13_dev80.  See if the data there
matches SATA device number 1, number 2, or both.
If your machine has a modern BIOS, there should be files named
host_bus and interface which uniquely identify the drive.  If not,
There are such files for the normal IDE drive, but not for the SATA disks.
we fall back to using the disk size (sectors).  If you have identical
disks on the two SATA channels, then the size is not a sufficient
The two disks are 100% identical, I do not see no difference in both 
folders, except some mbr_signature in int13_dev80. Also the contents of 
all the data is the same. Even the BIOS does not make it easy to 
distinguish between both channels - you see what you've selected by what 
is booted ;-)

It amounts to this.  If there is enough information under
/sys/firmware/int13_dev80 to distinguish the device, then we should be
doing so.  If, on the other hand, int13_dev80 does NOT correspond to
your boot device, that would be interesting as well...
I'm trying to find someone, who has another SATA drive laying around or 
some IDE-to-SATA adaptor, so the information is not identical.

Bye,
--
Steffen Kaiser
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minor problem with find-boot-device

[Steffen Kaiser]

Hello,
last week I reported that the script (of linuxboot CD of v4.4-test5) 
successfully finds the SATA boot disk of an ASUS P4P800-E Deluxe.

I have configured:
PATA/normal IDE: 1 hard disk (Linux)
SATA channel #1: 1 hard disk (empty)
SATA channel #2: 1 hard disk (Windows)
The SATA channels are not part of a RAID.
I can successfully make any of the three disks the BIOS boot device and it
does boot the system installed there (or tells me no active partition);
but the unattended boot disk differs between PATA and SATA only, hence,
it makes no difference, if the BIOS as channel #1 or #2 selected as
boot device.
This is just a bug report as I was curious to test it. I do not
intend to install windows there unattendedly.
Bye,
--
Steffen Kaiser
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