Can you boot from CD only with certain ROM versions?

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Title: Can you boot from CD only with certain ROM versions?
Post by: kdbeyer on July 24, 2008, 08:09:44 PM
Hello,

Is it true that you can boot from a SCSI CD only with certain ROM versions?  I have NeXTStation monos.  Two are Rom version 2.5, one is version 3.3.  I can boot from the CD with the ROM 3.3 version, but when I try

bsd(1,0,0)sdmach rootdev=sd1a

on the 2.5 slabs, it waits a while then says no scsi disk.  Is it not possible to boot with the earlier ROM version?

Thanks,
Keith
Title: Re: Can you boot from CD only with certain ROM versions?
Post by: neozeed on July 24, 2008, 10:39:53 PM
Quote from: "kdbeyer"Hello,

Is it true that you can boot from a SCSI CD only with certain ROM versions?  I have NeXTStation monos.  Two are Rom version 2.5, one is version 3.3.  I can boot from the CD with the ROM 3.3 version, but when I try

bsd(1,0,0)sdmach rootdev=sd1a

on the 2.5 slabs, it waits a while then says no scsi disk.  Is it not possible to boot with the earlier ROM version?

Thanks,
Keith

You are correct.

There is a floppy that can boot cdroms... the boot program is on there... Now of course, half the fun is finding a scsi floppy.....
Title: Can you boot from CD only with certain ROM versions?
Post by: kdbeyer on July 25, 2008, 09:39:50 AM
I take it the necessary floppy is not the one available on the apple website via ftp?

I did download the image but when I tried to write it to a floppy using a mac book pro, I received a message that the file was too big and did not fit on the floppy.

:(
Title: Can you boot from CD only with certain ROM versions?
Post by: helf on July 25, 2008, 11:26:58 AM
How big was the disk img you were trying to write? Also, you have to directly write the ".diskimage" (whatever the extension is) to the floppy. You can't just copy it like a normal file.
Title: Can you boot from CD only with certain ROM versions?
Post by: kdbeyer on July 25, 2008, 11:48:27 AM
QuoteHow big was the disk img you were trying to write?

On the apple site, they all list as 1.4 MB, so I would think they would fit on a 1.44 MB standard high density floppy.  The floppy images I downloaded are at:

http://download.info.apple.com/Apple_Support_Area/Apple_Software_Updates/MultiCountry/Enterprise/nextstep/floppyimages/

I used the disk utility to write the image to a floppy in Mac OS 10.5, but it would not write the image because it said it was too big.  Is this the correct way to write the image?

Thanks,
Keith
Title: Can you boot from CD only with certain ROM versions?
Post by: brams on July 27, 2008, 01:36:48 PM
Hi

RawWrite is easy to make boot floppies.  But you need Windows.  Then you can use dd.

Apple do not host the m68k OPENSTEP 4.2 boot floppy, are you using 4.2?, I imaged mine and Racer X kindly hosts it.  Have a rummage around his site and you'll find it.

brams

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