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| HP-UX HP-UX (Hewlett Packard UniX) is Hewlett-Packard's proprietary implementation of the Unix operating system, based on System V. |
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#1
01-22-2002
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HP-UX 10.20 devices
Is it possible to create the CDROM device file for a drive attached to the parallel port? I have a removable CDROM drive (gift - I'm trying not to return it, but may have to anyways) that attaches via parallel port. The only device that I can attach to that hardware address is /dev/c1t0d0_lp, a printer device. I may be going about this all wrong, since I'm very new with HP-UX / hp9000's, but I can't seem to get the major/minor/driver/etc. correct...
Also, I think I already know the answer to this, but is it possible to create /dev/zero and /dev/(u)random on an HP-UX system? I didn't see anything in Sam's kernel config, so I doubt it, but it's worth a try, I suppose... 
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#2
01-22-2002
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I have that kind of problem ,too
Please help us.
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#3
01-25-2002
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I think what you are asking for is not possible for HP UX platform. I am not sure, but I don't think there are drivers built in the O/S for what you are wanting. We have 10 HP UX-9000 series K and M and L class servers, and they all have built in CD-ROM drives that are attached via SCSI controller.
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#4
01-29-2002
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Yeah, I thought not... After all, would we really want PC hardware on a specialized Unix workstation? Heck, we might as well just use peecees for everything in that case.
I was able to find a device driver for Linux systems, however, and that will do just fine. Thanks for the reply.
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#7
02-04-2002
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/dev/zero vs /dev/null
Since yall brought this up, I have a question.
What is the difference between. These two commands 1) cat /dev/null > somefile 2) cat /dev/zero > somefile 3) > somefile Zeroing out a file. I know that "dd can be used to create a file of X bytes for testing and to "hold" space in a filesytem and for doing "disk dumps" an d for destroying data on a disk ( not the prescribed method). I think I know another reason for /dev/zero. That would be to zero out a disk for reuse. Any insight would be informative.  
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