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Disk On Module boot failure
OpenQNX Forum Index » General » QNX Newsgroups » qnx.qnx4
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Manuele
Post subject: Disk On Module boot failure  PostPosted: Jul 30, 2007 - 09:25 AM
Guest
Hello
I have problems booting from a 31 MB DiskOnModule with QNX 4.25

The DoM works ok as primary slave, and can be mounted and written
with no problem. As primary master, the boot loader fails with the
ominous message "Missing Operating System".

I think that the problem resides with the disk geometry: the BIOS
reports 500 cylinders, 8 heads, 16 sectors, while fdisk sees the
DoM as a 126 cylinders device.

I have found some reference to using spatch to force the BIOS
geometry in the boot loader, but details are missing.
Can somebody help me?

Thanks
Manuele

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qnxloader
Post subject: RE: Disk On Module boot failure  PostPosted: Jul 30, 2007 - 11:26 AM
Senior Member


Joined: Oct 06, 2003
Posts: 149
Try set in BIOS geometry, that report fdisk.
 
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Igor Mazanov
Post subject: Re: Disk On Module boot failure  PostPosted: Aug 08, 2007 - 12:41 PM
Guest
Hello,

Make yours DiskOnModule DOS-bootable firstly, and reinit it in QNX 4 then.

I described this trick already, you can check "Re: Problems installing V6.3 on
Compact Flash" thread in comp.os.qnx newsgroup for more detailed description,

news://inn.qnx.com:119/cqu5a3$5i8$1@inn.qnx.com

Regards,
Igor.

Manuele wrote:
Quote:
Hello
I have problems booting from a 31 MB DiskOnModule with QNX 4.25

The DoM works ok as primary slave, and can be mounted and written
with no problem. As primary master, the boot loader fails with the
ominous message "Missing Operating System".

I think that the problem resides with the disk geometry: the BIOS
reports 500 cylinders, 8 heads, 16 sectors, while fdisk sees the
DoM as a 126 cylinders device.

I have found some reference to using spatch to force the BIOS
geometry in the boot loader, but details are missing.
Can somebody help me?

Thanks
Manuele
 
   
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