Re: [ubuntu-uk] Switched hard drives
Many many thanks for the information :) It was humourous and informative.. Andy Andrew Oakley wrote: Andy Watts wrote: Chris Rowson wrote: l have 2 hard drives in my machine, 1 with windows 2k and the other with Ubuntu on it. l've tried having them both connected to the same ribbon and rebooting with either of the 2 hard drives powered. Sadly it doesn't seem to work so l wonder whether there's a solution..Both drives are set as masters.. l don't want to have both OSs on the same hard drive Okay, that tells us what you DON'T want to do. ;-) What is it that you DO want to do? * Dual boot using separate hard drives? * Have removable drives? * Something else? What? Also... are you using IDE/ATA drives (wide flat ribbon) or SATA (thin cable)? I'm assuming you've got a boot loader (Windows - NT loader I think? - or GRUB for Linux) installed on one of the hard drives. You'll need this on the bootable drive so that your PC knows where the operating system resides. I think Andy might be trying to switch off (electrically) one or other IDE hard drives... if so, a boot loader on only one of those drives won't help. I suspect Andy is fundamentally misunderstanding the relationship between master/slave and boot options. I suspect Andy thinks a drive has to be master to be bootable (which is incorrect). l did try setting both to masters, installing a switch on the -ve rail of the 2 molexes. Sadly it didn't work :( Yeah, that really won't. Why have you set them both as masters on the same cable? * You want removable drives (because you're clever, and you might want to move the drive to another PC one day), or you want to be able to entirely switch off a drive (because you're trying to run on the absolute minimum current draw, perhaps because your machine is running from 12V DC battery such as a car or van, or because you're just REALLY stingy with the electricity bill) In this case, buy a removable drive caddy or a USB external drive enclosure. Removable caddies are about ten quid and fit into a 5.25 CD/DVD slot. (Note that the environmental cost of manufacturing the caddy will vastly exceed the environmental cost of leaving the second drive switched on, in case you think this is some kind of green option; unused drives will switch into low-power mode anyway) * You want to dual boot in the traditional manner Set one as master and put your boot loader on it, such as GRUB. Configure this one boot loader to offer the option to boot off either drive. See the GRUB documentation or ask here for more help configuring GRUB across two drives (clue: HD0, HD1). Set the other as slave. You won't need a boot loader on the slave, since the boot loader on the master drive will be able to boot off either drive (and indeed off any other connected bootable device). * You want to dual boot through BIOS (because you hate configuring boot loaders, and your BIOS offers a simple boot menu such as Dell's F12 option, and you're just a bit awkward like that) Set one as master and the other as slave. The BIOS boot options will allow you to boot off drive 0, drive 1 etc. Note that this still won't allow you to switch off the unused drive whilst the PC is running. But it will allow you to remove/disconnect the slave drive (but not the master) once the PC is switched off. * You don't want removable drives but you are determined to have two bootable drives that are masters (because both of the hard drives have had their master/slave jumpers permanently forced into the master position in an unfortunate but surprisingly selective accident with a soldering iron / tube of superglue / welding rod, OR, your hard drives are set to master by default and you've lost the jumpers) Install the drives on separate cables. Change the jumpers on your CD/DVD drive to be a slave. (I have some spare hard drive jumpers if you want one? Send an SAE to A Oakley, 7 Frampton Cottages, GL20 8NX) -- ubuntu-uk@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-uk https://wiki.kubuntu.org/UKTeam/
Re: [ubuntu-uk] Switched hard drives
Chris Rowson wrote: Hi people l do hope that this hasn't been asked too many times before.. l have 2 hard drives in my machine, 1 with windows 2k and the other with Ubuntu on it. l've tried having them both connected to the same ribbon and rebooting with either of the 2 hard drives powered. Sadly it doesn't seem to work so l wonder whether there's a solution..Both drives are set as masters.. l don't want to have both OSs on the same hard drive Please could someone offer a solution I'm assuming you've got a boot loader (Windows - NT loader I think? - or GRUB for Linux) installed on one of the hard drives. You'll need this on the bootable drive so that your PC knows where the operating system resides. Chris Many thanks for the info Guys.. l did try setting both to masters, installing a switch on the -ve rail of the 2 molexes. Sadly it didn't work :( Andy -- ubuntu-uk@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-uk https://wiki.kubuntu.org/UKTeam/
Re: [ubuntu-uk] Switched hard drives
Andy Watts wrote: Chris Rowson wrote: l have 2 hard drives in my machine, 1 with windows 2k and the other with Ubuntu on it. l've tried having them both connected to the same ribbon and rebooting with either of the 2 hard drives powered. Sadly it doesn't seem to work so l wonder whether there's a solution..Both drives are set as masters.. l don't want to have both OSs on the same hard drive Okay, that tells us what you DON'T want to do. ;-) What is it that you DO want to do? * Dual boot using separate hard drives? * Have removable drives? * Something else? What? Also... are you using IDE/ATA drives (wide flat ribbon) or SATA (thin cable)? I'm assuming you've got a boot loader (Windows - NT loader I think? - or GRUB for Linux) installed on one of the hard drives. You'll need this on the bootable drive so that your PC knows where the operating system resides. I think Andy might be trying to switch off (electrically) one or other IDE hard drives... if so, a boot loader on only one of those drives won't help. I suspect Andy is fundamentally misunderstanding the relationship between master/slave and boot options. I suspect Andy thinks a drive has to be master to be bootable (which is incorrect). l did try setting both to masters, installing a switch on the -ve rail of the 2 molexes. Sadly it didn't work :( Yeah, that really won't. Why have you set them both as masters on the same cable? * You want removable drives (because you're clever, and you might want to move the drive to another PC one day), or you want to be able to entirely switch off a drive (because you're trying to run on the absolute minimum current draw, perhaps because your machine is running from 12V DC battery such as a car or van, or because you're just REALLY stingy with the electricity bill) In this case, buy a removable drive caddy or a USB external drive enclosure. Removable caddies are about ten quid and fit into a 5.25 CD/DVD slot. (Note that the environmental cost of manufacturing the caddy will vastly exceed the environmental cost of leaving the second drive switched on, in case you think this is some kind of green option; unused drives will switch into low-power mode anyway) * You want to dual boot in the traditional manner Set one as master and put your boot loader on it, such as GRUB. Configure this one boot loader to offer the option to boot off either drive. See the GRUB documentation or ask here for more help configuring GRUB across two drives (clue: HD0, HD1). Set the other as slave. You won't need a boot loader on the slave, since the boot loader on the master drive will be able to boot off either drive (and indeed off any other connected bootable device). * You want to dual boot through BIOS (because you hate configuring boot loaders, and your BIOS offers a simple boot menu such as Dell's F12 option, and you're just a bit awkward like that) Set one as master and the other as slave. The BIOS boot options will allow you to boot off drive 0, drive 1 etc. Note that this still won't allow you to switch off the unused drive whilst the PC is running. But it will allow you to remove/disconnect the slave drive (but not the master) once the PC is switched off. * You don't want removable drives but you are determined to have two bootable drives that are masters (because both of the hard drives have had their master/slave jumpers permanently forced into the master position in an unfortunate but surprisingly selective accident with a soldering iron / tube of superglue / welding rod, OR, your hard drives are set to master by default and you've lost the jumpers) Install the drives on separate cables. Change the jumpers on your CD/DVD drive to be a slave. (I have some spare hard drive jumpers if you want one? Send an SAE to A Oakley, 7 Frampton Cottages, GL20 8NX) -- Andrew Oakley -- ubuntu-uk@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-uk https://wiki.kubuntu.org/UKTeam/
Re: [ubuntu-uk] Switched hard drives
On Sat, 2008-02-23 at 11:41 +, Andy Watts wrote: Hi people l do hope that this hasn't been asked too many times before.. l have 2 hard drives in my machine, 1 with windows 2k and the other with Ubuntu on it. l've tried having them both connected to the same ribbon and rebooting with either of the 2 hard drives powered. Sadly it doesn't seem to work so l wonder whether there's a solution..Both drives are set as masters.. l don't want to have both OSs on the same hard drive Please could someone offer a solution __ Only one drive can be set as master on the same cable, the other will have to be set as slave. steve -- ubuntu-uk@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-uk https://wiki.kubuntu.org/UKTeam/
Re: [ubuntu-uk] Switched hard drives
On 23/02/2008, Steve Cook [EMAIL PROTECTED] wrote: On Sat, 2008-02-23 at 11:41 +, Andy Watts wrote: Hi people l do hope that this hasn't been asked too many times before.. l have 2 hard drives in my machine, 1 with windows 2k and the other with Ubuntu on it. l've tried having them both connected to the same ribbon and rebooting with either of the 2 hard drives powered. Sadly it doesn't seem to work so l wonder whether there's a solution..Both drives are set as masters.. l don't want to have both OSs on the same hard drive Please could someone offer a solution __ Only one drive can be set as master on the same cable, the other will have to be set as slave. Or you could set both drives to 'cable select' which will make the device on the end connector the master and the one on the middle connector the slave. Tom -- ubuntu-uk@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-uk https://wiki.kubuntu.org/UKTeam/
Re: [ubuntu-uk] Switched hard drives
Hi people l do hope that this hasn't been asked too many times before.. l have 2 hard drives in my machine, 1 with windows 2k and the other with Ubuntu on it. l've tried having them both connected to the same ribbon and rebooting with either of the 2 hard drives powered. Sadly it doesn't seem to work so l wonder whether there's a solution..Both drives are set as masters.. l don't want to have both OSs on the same hard drive Please could someone offer a solution I'm assuming you've got a boot loader (Windows - NT loader I think? - or GRUB for Linux) installed on one of the hard drives. You'll need this on the bootable drive so that your PC knows where the operating system resides. Chris -- ubuntu-uk@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-uk https://wiki.kubuntu.org/UKTeam/
