Re: Essential utilities for G4 powermac
On Fri, Aug 27, 2010 at 1:59 AM, Matevž Markovič < ivwcorporation.mat...@gmail.com> wrote: > http://www.firmworks.com/QuickRef.html > > Here you can see all open firmware commands (remember, that is forth > environment, therefore you can define your own commands from the existing > ones). > > I found that I was wrong about sync - it writes to the hard disk. > The script I mentioned is NVRAMRC. > > nvramrc is also used with the Open Firmware hack used to enable >128GB hard drives on older Macs. For an example, see here: http://nanchatte.wordpress.com/2008/04/27/128gb-large-hdd-lba48-support-on-the-g4-cube-with-leopard/ IIRC, there is a command in OS X that can be used to modify Open Firmware once the OS is booted. I think the command is "nvram", but I'm at work right now and don't have a PPC Mac handy for testing. Actually, I got the command right. Here's the man page for the nvram command. Use with extreme caution! http://developer.apple.com/mac/library/documentation/Darwin/Reference/ManPages/man8/nvram.8.html Eric -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: Essential utilities for G4 powermac
http://www.firmworks.com/QuickRef.html Here you can see all open firmware commands (remember, that is forth environment, therefore you can define your own commands from the existing ones). I found that I was wrong about sync - it writes to the hard disk. The script I mentioned is NVRAMRC. Here is an example of running the editor to modify the script. Remember, it gets executed prior you have a chance to act, therefore, double-check everything. ok nvedit (use editor commands) ^C (control-C to finish) Store script to NVRAM [y/n]? y Enable script [y/n]? y ok Have a nice day, Matevž Markovič -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: Essential utilities for G4 powermac
I think that there is a script that gets executed prior booting into the Forth shell (it was mentioned in the Mac OS X Internals (Amit S.). He stated that this script "can render your computer unbootable", therefore it must be saved into NVRAM. I am sure that there is a way to save changes (like modified aliases) into NVRAM. In OS X, they are saved only if you shut down cleanly, and that is managed by IOKIT. Here we are speaking of firmware and I think that making your firmware implementation unchangeable for the end user after providing him with a shell is rather useless, dont you think? I think that sync writes changes to the NVRAM prior to reboot. Anyway, check this page http://osxbook.com/book/bonus/ancient/whatismacosx/arch_boot.html. I hope that I have been of some help (is that better ? :) ) Matevž Markovič -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: Essential utilities for G4 powermac
Greetings. On Aug 25, 3:36 am, Matevž Markovič wrote: > I would highly recommend Applejack. But I think it can only be installed on > the boot drive. Also ClamXav would not hurt - we live in dark times, and is > getting darker, even for macs :) I think Applejack can be installed on any and all installed Disks, however you need to boot from that drive for it to work. > > Try searching sourceforge.net. And for the last resort, learn using > OpenFirmware. It is very powerful and also extensible. The same goes for the > Intel Macs - install rEFIt, along with the EFI shell, and learn how to use > EFI shell as well. > Try to find utilities which can be invoked from the OpenFirmware. Myself, I > have never done that, but I am sure that it can be done and that such > utilities exist. The problem with modifying OpenFirmware is the all modifications disappear when you reboot. > > As for the pure troubleshooting utilities, I would recommend Apple Hardware > Test, or some other LiveCD which has those utilities preinstalled. Depending > solely on your hdd and utilities on it can be dangerous. > > I hope I have been of little help. > Matevž > Markovič -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: Essential utilities for G4 powermac
I would highly recommend Applejack. But I think it can only be installed on the boot drive. Also ClamXav would not hurt - we live in dark times, and is getting darker, even for macs :) Try searching sourceforge.net. And for the last resort, learn using OpenFirmware. It is very powerful and also extensible. The same goes for the Intel Macs - install rEFIt, along with the EFI shell, and learn how to use EFI shell as well. Try to find utilities which can be invoked from the OpenFirmware. Myself, I have never done that, but I am sure that it can be done and that such utilities exist. As for the pure troubleshooting utilities, I would recommend Apple Hardware Test, or some other LiveCD which has those utilities preinstalled. Depending solely on your hdd and utilities on it can be dangerous. I hope I have been of little help. Matevž Markovič -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
