Master or slave? Primary or secondary?
12/03/2018 15:30
I'm getting set to put a larger drive in a machine. It did have hda = main disk, hdb = CDrom, hdc = DVD-R(W).

The added drive could likely have content that I want to write to DVD. Sowhereas it would be easiest to put the next drive on hdd, I'm wonderinghow that would affect performance, i.e., DVD writing speed. (It's a 1.3MHzmachine.) And does ide-scsi help the situation at all, or am I stillimpeded by the IDE controller, even though using SCSI emulation. Anythoughts on where to put my drives would be welcome.


Source is Usenet: comp.os.linux.misc
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Answer score: 5
12/03/2018 15:30 - This is not a hard and fast rule. A lot depends on the OS, distro,and even the bios/mb. I can't remember an example/exceptions withLinux (although I have a niggling feeling I've encountered one), butthere's definitely some cases where is won't work. One example isUnixware 8 which will not load unless the boot CD is on the primary(slave). I've also run across this weirdness with w2K on one box.

Sometimes you just gotta play around till it works.

nb

Source is Usenet: comp.os.linux.misc
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Answer score: 5
12/03/2018 15:30 - On Wed, 30 Jul 2003 20:02:36 GMT, Dave Brown staggered into the BlackSun and said: Badly, since IDE devices don't share the bus well at all. Copyingthings from /dev/hdc to /dev/hdd is much slower than copying things from/dev/hda to /dev/hdc . Put your disks on one channel and yourCD/DVD devices on the other channel. I'd switch the CD-ROM to /dev/hddand put the new disk in at /dev/hdb. You'll have to make sure the/dev/cdrom link is correct (pointing to /dev/scd1 or /dev/hdd, mostlikely) but that's it, and you'll only have to do that once.

Seriously retro, dude. (The original IBM PC ran at 4.33MHz. I ThinkYou Meant 1.3 GHz or 1300 MHz, right?) Processor speed is not theproblem here; I/O is.

hdX=ide-scsi merely prevents the IDE CD-ROM module from grabbing hdX.

Using ide-scsi emulation for a particular IDE (actually ATAPI) devicedoes not allow a device to transcend the brain-damage built in to theIDE bus. It lets a userspace program treat an ATAPI device as a SCSIdevice.


Source is Usenet: comp.os.linux.misc
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