Changing over ide cables and master/slave settings...
30 April 2006, 08:53 AM
#1
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Changing over ide cables and master/slave settings...
Having changed the cables about on my PC yesterday to check to see if it would help a knackered cd drive (see other thread) the two hard drives and 2 cd/dvd drives have ended up on different ide ports on the mother board and also I have changed them round with which is master and which is slave.
The PC still boots but the changes have made the bios screen not show when it boots up now and takes a while to check the drives with a black screen (assuming this is the bios not finding the original setup and re-reading all the drives to find the OS) and then boots.
Why does changing master/slave settings mess up the boot process? Isn't XP/the bios clever enough to learn the changes that have been made?
I take it I have to either put the drives back in the original order on the ide cables and restore which is master/slave on each cable or reinstall the OS to get everything to boot as quickly as it did before?
Has been years since playing with hardware as my job no longer requires it so forgotten/got behind on hardware setups and changes
The PC still boots but the changes have made the bios screen not show when it boots up now and takes a while to check the drives with a black screen (assuming this is the bios not finding the original setup and re-reading all the drives to find the OS) and then boots.
Why does changing master/slave settings mess up the boot process? Isn't XP/the bios clever enough to learn the changes that have been made?
I take it I have to either put the drives back in the original order on the ide cables and restore which is master/slave on each cable or reinstall the OS to get everything to boot as quickly as it did before?
Has been years since playing with hardware as my job no longer requires it so forgotten/got behind on hardware setups and changes
30 April 2006, 11:52 AM
#2
[quote=**************
Why does changing master/slave settings mess up the boot process? Isn't XP/the bios clever enough to learn the changes that have been made?
[/quote]
Depends on how you're BIOS is set-up for the devices on those IDE cables. In other words the BIOS may not be set-up to auto-detect the devices. Also each device will have jumpers on the back determining if they are connected to the Master or Slave connectors on the IDE cables.
Why does changing master/slave settings mess up the boot process? Isn't XP/the bios clever enough to learn the changes that have been made?
[/quote]Depends on how you're BIOS is set-up for the devices on those IDE cables. In other words the BIOS may not be set-up to auto-detect the devices. Also each device will have jumpers on the back determining if they are connected to the Master or Slave connectors on the IDE cables.
30 April 2006, 12:16 PM
#3
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OK will check the bios but sure its auto detect. The jumpers shouldn't matter though should they as I removed all 4 devices off the two ide channels, changed the jumper settings and then plugged them back in in a different order to how they had been? Its this different order is doesn't seem to like as though its looking for the bootable device instead of knowing where it is immediately, ie looking on the ide channel of what used to be the bootable device and finding a cd rom and then having to search the other conencted devices to locate the OS.
30 April 2006, 01:34 PM
#4
Originally Posted by **************
OK will check the bios but sure its auto detect. The jumpers shouldn't matter though should they as I removed all 4 devices off the two ide channels, changed the jumper settings and then plugged them back in in a different order to how they had been? Its this different order is doesn't seem to like as though its looking for the bootable device instead of knowing where it is immediately, ie looking on the ide channel of what used to be the bootable device and finding a cd rom and then having to search the other conencted devices to locate the OS.
Seagate 120GB hard drive is originally HDisk0 (located IDE 0 Master)
Hitachi 60GB Hard Drive is originally HDisk1 (located IDE 0 slave)
BIOS would be set in this configuration to boot:
CDROM, floppy, Hdisk0
You now swap over the Seagate with the Hitachi. The Hitachi is now seen as Hdisk0.
I hope that makes sense?
30 April 2006, 02:36 PM
#6
Originally Posted by **************
Well yeah thats whats happened and this is what seems to be causing the delay on boot with the bios now searching for what drive has gone where.
I would set each jumper to each device as either MASTER or Slave. CS isn't very good.
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