Floppy Disk Boot Size (CDRom boot)

Previously Shadow <sh@dow> wrote:
> How can I check if a motherboard can boot a Cdrom with a 2880
> img bootdisk ?
> Or even a 1722 one ?
> I'm building a router, and want to know how big an image my
> TX97 can boot.
> TIA
>

Does not work that way, since a CDROM bootsector is 2048 bytes,
while a floppy bootsector is 512 bytes. They are fundamentally
incompatible.

Arno
 >> Stay informed about: Floppy Disk Boot Size (CDRom boot) 

"Arno Wagner" <me RemoveThis @privacy.net> wrote in message
news:61qlnoF205kh7U2@mid.individual.net...
> Previously Shadow <sh@dow> wrote:
>> How can I check if a motherboard can boot a Cdrom with a 2880
>> img bootdisk ?
>> Or even a 1722 one ?
>> I'm building a router, and want to know how big an image my
>> TX97 can boot.
>> TIA
>>
>
> Does not work that way, since a CDROM bootsector is 2048 bytes,
> while a floppy bootsector is 512 bytes. They are fundamentally
> incompatible.
>
> Arno

Maybe a quick read of this will help
http://www.phoenix.com/NR/rdonlyres/98D3219C-9CC9-4DF5-B496-A286D893E3...0/specs

It quite clearly states booting a 2.88MB image *is* possible!
 >> Stay informed about: Floppy Disk Boot Size (CDRom boot) 

Previously Mick Sitton <bigears.DeleteThis@toytown.com> wrote:

> "Arno Wagner" <me.DeleteThis@privacy.net> wrote in message
> news:61qlnoF205kh7U2@mid.individual.net...
>> Previously Shadow <sh@dow> wrote:
>>> How can I check if a motherboard can boot a Cdrom with a 2880
>>> img bootdisk ?
>>> Or even a 1722 one ?
>>> I'm building a router, and want to know how big an image my
>>> TX97 can boot.
>>> TIA
>>>
>>
>> Does not work that way, since a CDROM bootsector is 2048 bytes,
>> while a floppy bootsector is 512 bytes. They are fundamentally
>> incompatible.
>>
>> Arno

> Maybe a quick read of this will help
> http://www.phoenix.com/NR/rdonlyres/98D3219C-9CC9-4DF5-B496-A286D893E3...0/specs

> It quite clearly states booting a 2.88MB image *is* possible!

It is possible, but it requires an additional stage, namely
a CD-capable bootloader.

Arno
 >> Stay informed about: Floppy Disk Boot Size (CDRom boot) 

daytripper <day_trippr.RemoveThis@REMOVEyahoo.com> writes:

> On Sat, 16 Feb 2008 20:00:35 -0300, Shadow <sh@dow> wrote:
>
>> How can I check if a motherboard can boot a Cdrom with a 2880
>>img bootdisk ?
>> Or even a 1722 one ?
>> I'm building a router, and want to know how big an image my
>>TX97 can boot.
>> TIA
>>
>
> An antique like that almost certainly does not support cdrom or fdd boot
> images greater than 1440...

Considering ED floppy drives are from the early nineties
(http://simple.wikipedia.org/wiki/Floppy_disk says 1991), so why
wouldn't a TX97 have support for those in the BIOS?

I'm almost certain I installed Linux on my old system with Asus T2P4
motherboard, by just putting a 2.88 boot floppy image on a CD. The
rest of the installation was downloaded from the net.

To the original poster, I'd go ahead and try the 2880 bootdisk image.
 >> Stay informed about: Floppy Disk Boot Size (CDRom boot) 

As a follow up, I built a 1680 floppy, made it bootable with
syslinux. tested it, when I was sure it was working, wrote the files
to a iso file using mkisofs/isolinux bootloader.
I had trouble with 1722 floppies, lots of bad sectors, not
always though .... bad floppy drive ?
[]'s
Resume , always boots 1.44 and 1.68, and sometimes 1.72. No
2.88 drive here to test, and I can't figure out how to make a 2.88
image bootable without the hardware to write it to a disk, though it
IS possible (but too complicated for me) according to Google.

On 17 Feb 2008 21:23:14 GMT, Arno Wagner <me DeleteThis @privacy.net> wrote:

>Previously Mick Sitton <bigears DeleteThis @toytown.com> wrote:
>
>> "Arno Wagner" <me DeleteThis @privacy.net> wrote in message
>> news:61qlnoF205kh7U2@mid.individual.net...
>>> Previously Shadow <sh@dow> wrote:
>>>> How can I check if a motherboard can boot a Cdrom with a 2880
>>>> img bootdisk ?
>>>> Or even a 1722 one ?
>>>> I'm building a router, and want to know how big an image my
>>>> TX97 can boot.
>>>> TIA
 >> Stay informed about: Floppy Disk Boot Size (CDRom boot) 

Previously Shadow <sh@dow> wrote:
> As a follow up, I built a 1680 floppy, made it bootable with
> syslinux. tested it, when I was sure it was working, wrote the files
> to a iso file using mkisofs/isolinux bootloader.
> I had trouble with 1722 floppies, lots of bad sectors, not
> always though .... bad floppy drive ?

Not necessarily. Maybe just operation grossly out of spec.

Arno


> []'s
> Resume , always boots 1.44 and 1.68, and sometimes 1.72. No
> 2.88 drive here to test, and I can't figure out how to make a 2.88
> image bootable without the hardware to write it to a disk, though it
> IS possible (but too complicated for me) according to Google.

> On 17 Feb 2008 21:23:14 GMT, Arno Wagner <me DeleteThis @privacy.net> wrote:

>>Previously Mick Sitton <bigears DeleteThis @toytown.com> wrote:
>>
>>> "Arno Wagner" <me DeleteThis @privacy.net> wrote in message
>>> news:61qlnoF205kh7U2@mid.individual.net...
>>>> Previously Shadow <sh@dow> wrote:
>>>>> How can I check if a motherboard can boot a Cdrom with a 2880
>>>>> img bootdisk ?
>>>>> Or even a 1722 one ?
>>>>> I'm building a router, and want to know how big an image my
>>>>> TX97 can boot.
>>>>> TIA
 >> Stay informed about: Floppy Disk Boot Size (CDRom boot)