int 13h

[Stefan]

Does anyone know if int 13h (with extension) recognizes
correctly scsi drives?

Thank you!

[The Legend]

>On 2002-02-24 12:06:45, Stefan wrote:
>Does anyone know if int 13h (with extension) recognizes
>correctly scsi drives?
>
>Thank you!
Well, if it wouldn't I don't think that DOS could boot
from a SCSI device ...

The Legend

[J. Weeks]

>On 2002-02-24 12:21:10, The Legend wrote:
>>On 2002-02-24 12:06:45, Stefan wrote:
>>Does anyone know if int 13h (with extension) recognizes
>>correctly scsi drives?
>>
>>Thank you!
>Well, if it wouldn't I don't think that DOS could boot
>from a SCSI device ...

Makes sense... but at the same time, I can boot
off a CD-ROM, or an LS120 floppy... neither of
these are supported through the int 0x13h
interface.

Jeff (WOHOO CANADA!!!!)

[The Legend]

>On 2002-02-24 17:29:22, J. Weeks wrote:
>>On 2002-02-24 12:21:10, The Legend wrote:
>>>On 2002-02-24 12:06:45, Stefan wrote:
>>>Does anyone know if int 13h (with extension) recognizes
>>>correctly scsi drives?
>>>
>>>Thank you!
>>Well, if it wouldn't I don't think that DOS could boot
>>from a SCSI device ...
>
>Makes sense... but at the same time, I can boot
>off a CD-ROM, or an LS120 floppy... neither of
>these are supported through the int 0x13h
>interface.
>
>Jeff (WOHOO CANADA!!!!)
Well, if you boot off a CD-ROM, the bios loads a
disk-image located on the CD. That way, it supports
0x13h but not for the complete CD ...

The Legend

[J. Weeks]

>Well, if you boot off a CD-ROM, the bios loads a
>disk-image located on the CD. That way, it supports
>0x13h but not for the complete CD ...

Yeah, but when it loads the CD's "boot sector" (I
don't know much about bootable CDs) is it even
using the int 0x13 interface? Or is it just another
interface internal to the bios?

'cuz if it uses the int 0x13 interface, then you
should be able to set the drive type to, say, 0x83,
for a CD (0=A, 1=B, 0x80=HD1, 0x81=HD2, 0x83=CD)...
can you do that? I suppose it is an IDE drive,
so maybe... (anybody know for sure?)

If not, does anybody know how you'd have a multi-stage
boot loader in a CD?

And also... like I said, my BIOS supports LS120
disks... would they also be supported (again, through
something like drive=0x83 or 0x84, etc)?

Jeff

[J. Morford]

>On 2002-02-25 15:09:14, J. Weeks wrote:
>>Well, if you boot off a CD-ROM, the bios loads a
>>disk-image located on the CD. That way, it supports
>>0x13h but not for the complete CD ...
>
>Yeah, but when it loads the CD's "boot sector" (I
>don't know much about bootable CDs) is it even
>using the int 0x13 interface? Or is it just another
>interface internal to the bios?
>
>'cuz if it uses the int 0x13 interface, then you
>should be able to set the drive type to, say, 0x83,
>for a CD (0=A, 1=B, 0x80=HD1, 0x81=HD2, 0x83=CD)...
>can you do that? I suppose it is an IDE drive,
>so maybe... (anybody know for sure?)
>
>If not, does anybody know how you'd have a multi-stage
>boot loader in a CD?
>
>And also... like I said, my BIOS supports LS120
>disks... would they also be supported (again, through
>something like drive=0x83 or 0x84, etc)?
>
>Je

Refer to the El Torito CD boot specs:
http://www.phoenix.com/PlatSS/PDFs/specs-cdrom.pdf

[J. Morford]

>On 2002-02-25 15:09:14, J. Weeks wrote:
>>Well, if you boot off a CD-ROM, the bios loads a
>>disk-image located on the CD. That way, it supports
>>0x13h but not for the complete CD ...
>
>Yeah, but when it loads the CD's "boot sector" (I
>don't know much about bootable CDs) is it even
>using the int 0x13 interface? Or is it just another
>interface internal to the bios?
>
>'cuz if it uses the int 0x13 interface, then you
>should be able to set the drive type to, say, 0x83,
>for a CD (0=A, 1=B, 0x80=HD1, 0x81=HD2, 0x83=CD)...
>can you do that? I suppose it is an IDE drive,
>so maybe... (anybody know for sure?)
>
>If not, does anybody know how you'd have a multi-stage
>boot loader in a CD?
>
>And also... like I said, my BIOS supports LS120
>disks... would they also be supported (again, through
>something like drive=0x83 or 0x84, etc)?
>
>Je

Refer to the El Torito CD boot specs:
http://www.phoenix.com/PlatSS/PDFs/specs-cdrom.pdf

[J. Morford]

>On 2002-02-25 15:09:14, J. Weeks wrote:
>>Well, if you boot off a CD-ROM, the bios loads a
>>disk-image located on the CD. That way, it supports
>>0x13h but not for the complete CD ...
>
>Yeah, but when it loads the CD's "boot sector" (I
>don't know much about bootable CDs) is it even
>using the int 0x13 interface? Or is it just another
>interface internal to the bios?
>
>'cuz if it uses the int 0x13 interface, then you
>should be able to set the drive type to, say, 0x83,
>for a CD (0=A, 1=B, 0x80=HD1, 0x81=HD2, 0x83=CD)...
>can you do that? I suppose it is an IDE drive,
>so maybe... (anybody know for sure?)
>
>If not, does anybody know how you'd have a multi-stage
>boot loader in a CD?
>
>And also... like I said, my BIOS supports LS120
>disks... would they also be supported (again, through
>something like drive=0x83 or 0x84, etc)?
>
>Je

Refer to the El Torito CD boot specs:
http://www.phoenix.com/PlatSS/PDFs/specs-cdrom.pdf