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PPC Mac question
Long shot asking here but they did not know on the vintage Mac group
I was given a G4 tower 500mhz with a SCSI drive and controller. The OS was wiped but I have a PPC version of OSX 10.3 I was able to install...but the machine will not boot. Also have various drives with OS9 already installed that I tried and none will boot. I removed the SCSI drive and got the thing working with an ATA drive but I'd really like to know how to get it to boot from SCSI. When I re-attach the scsi drive I can mount it and read the data I found this info but it did not work Command-Option-Shift-Delete-# Boot from a specific SCSI ID, where # is 0 through 6 Not really important, just more a matter of curiosity thanks |
#2
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PPC Mac question
philo wrote:
Long shot asking here but they did not know on the vintage Mac group I was given a G4 tower 500mhz with a SCSI drive and controller. The OS was wiped but I have a PPC version of OSX 10.3 I was able to install...but the machine will not boot. Also have various drives with OS9 already installed that I tried and none will boot. I removed the SCSI drive and got the thing working with an ATA drive but I'd really like to know how to get it to boot from SCSI. When I re-attach the scsi drive I can mount it and read the data I found this info but it did not work Command-Option-Shift-Delete-# Boot from a specific SCSI ID, where # is 0 through 6 Not really important, just more a matter of curiosity thanks The System Preferences panel would have an item for "Startup" which sets what to boot from. If both the IDE and the SCSI disks were installed and actually working, then *both* OS options should be detected by this menu. It would take a second or two, for this to enumerate the possibilities. I had a fairly large number of "bogus" entries here, which would not actually have booted. As the detection method used simply assumes "if it has a Blessed folder, it's a candidate". The two on the right in this picture, would be booting straight to Classic. With your two disks, you might end up with two entries similar to the left-most one. http://lowendmac.com/wp-content/uplo...werPC-10.2.png For your 10.3 (I have the disc for that), it would include both Classic MacOS 9.x as well as MacOSX 10.3, and the Startup allows actually booting in Classic directly, or running MacOSX (with Classic running in a VM). 10.3 would be the last OS with both these options - it's the reason I bought my G4, is to have the "most compatible Mac" at that point in time. +-------------------+ +----------------------+ | MacOSX 10.3 | | Boot into 9.x direct | | | | +----------------------+ | | | | (Runs 9.x as a VM)| +-------------------+ If you were able to access the SCSI drive while booted from the IDE, then chances are your termination and ID number setting are OK. I don't think my G4 has any SCSI disks in it, and my PTP 250 running at 500MHz, was the last one with dual SCSI chains and seven drives. The G4 only had the two drives, and I installed an Acard IDE card to try to wire up faster IDE for my drives. (I might have had to add some KEXT for that card.) At that point, I was pretty fed up with the "SCSI tax", to be bothering with that stuff, as it really doesn't buy you anything. Maybe you'd need an active terminator on the end of the chain, or maybe the drive had an auto-terminator in it. The advice here says to hold down Option to see a built-in startup menu at the OpenFirmware level (the BIOS). I don't know if I've ever tried that on the G4. I always used the Startup panel for setting the next OS to use. I used to boot to Classic to use the 2906 SCSI card for the scanner, then boot back to MacOSX to actual edit the scans. And that's because of the two SCSI cards I owned, one only had a driver for Classic, one had a KEXT for MacOSX or something. Too many details, too long ago... All I can tell you is, to my surprise, the G4 still boots, even though the clock battery died. What's supposed to happen is there would be NVRAM trouble, if you lose settings in that thing. If I were to try to start the PTP (PowerTower Pro) today, its battery would be dead too, and it definitely would lose the NVRAM and have no way to deal with the 500MHz G3 accelerator installed in it. And then I'd have to crack the manual and figure out the voodoo again, to get it to go. By comparison, the G4 box has been a Saint. http://www.dummies.com/computers/mac...rom-a-dvd-rom/ Paul |
#3
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PPC Mac question
On 09/30/2017 09:44 AM, Paul wrote:
philo wrote: Long shot asking here but they did not know on the vintage Mac group I was given a G4 tower 500mhz with a SCSI drive and controller. The OS was wiped but I have a PPC version of OSX 10.3 I was able to install...but the machine will not boot. Also have various drives with OS9 already installed that I tried and none will boot. I removed the SCSI drive and got the thing working with an ATA drive but I'd really like to know how to get it to boot from SCSI. When I re-attach the scsi drive I can mount it and read the data I found this info but it did not work Command-Option-Shift-Delete-# Boot from a specific SCSI ID, where # is 0 through 6 Not really important, just more a matter of curiosity thanks The System Preferences panel would have an item for "Startup" which sets what to boot from. If both the IDE and the SCSI disks were installed and actually working, then *both* OS options should be detected by this menu. It would take a second or two, for this to enumerate the possibilities. I had a fairly large number of "bogus" entries here, which would not actually have booted. As the detection method used simply assumes "if it has a Blessed folder, it's a candidate". The two on the right in this picture, would be booting straight to Classic. With your two disks, you might end up with two entries similar to the left-most one. http://lowendmac.com/wp-content/uplo...werPC-10.2.png For your 10.3 (I have the disc for that), it would include both Classic MacOS 9.x as well as MacOSX 10.3, and the Startup allows actually booting in Classic directly, or running MacOSX (with Classic running in a VM). 10.3 would be the last OS with both these options - it's the reason I bought my G4, is to have the "most compatible Mac" at that point in time. Â*Â* +-------------------+Â*Â*Â*Â*Â*Â* +----------------------+ Â*Â* | MacOSX 10.3Â*Â*Â*Â*Â*Â* |Â*Â*Â*Â*Â*Â* | Boot into 9.x direct | Â*Â* |Â*Â*Â* |Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â* |Â*Â*Â*Â*Â*Â* +----------------------+ Â*Â* |Â*Â*Â* |Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â* | Â*Â* | (Runs 9.x as a VM)| Â*Â* +-------------------+ If you were able to access the SCSI drive while booted from the IDE, then chances are your termination and ID number setting are OK. I don't think my G4 has any SCSI disks in it, and my PTP 250 running at 500MHz, was the last one with dual SCSI chains and seven drives. The G4 only had the two drives, and I installed an Acard IDE card to try to wire up faster IDE for my drives. (I might have had to add some KEXT for that card.) At that point, I was pretty fed up with the "SCSI tax", to be bothering with that stuff, as it really doesn't buy you anything. Maybe you'd need an active terminator on the end of the chain, or maybe the drive had an auto-terminator in it. The advice here says to hold down Option to see a built-in startup menu at the OpenFirmware level (the BIOS). I don't know if I've ever tried that on the G4. I always used the Startup panel for setting the next OS to use. I used to boot to Classic to use the 2906 SCSI card for the scanner, then boot back to MacOSX to actual edit the scans. And that's because of the two SCSI cards I owned, one only had a driver for Classic, one had a KEXT for MacOSX or something. Too many details, too long ago... All I can tell you is, to my surprise, the G4 still boots, even though the clock battery died. What's supposed to happen is there would be NVRAM trouble, if you lose settings in that thing. If I were to try to start the PTP (PowerTower Pro) today, its battery would be dead too, and it definitely would lose the NVRAM and have no way to deal with the 500MHz G3 accelerator installed in it. And then I'd have to crack the manual and figure out the voodoo again, to get it to go. By comparison, the G4 box has been a Saint. http://www.dummies.com/computers/mac...rom-a-dvd-rom/ Â*Â* Paul I was able to select the SCSI drive as a startup disk but it still did not boot from it thanks Will continue fooling around with it |
#4
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PPC Mac Solved
On 09/30/2017 08:09 AM, philo wrote:
Long shot asking here but they did not know on the vintage Mac group I was given a G4 tower 500mhz with a SCSI drive and controller. The OS was wiped but I have a PPC version of OSX 10.3 I was able to install...but the machine will not boot. Also have various drives with OS9 already installed that I tried and none will boot. I removed the SCSI drive and got the thing working with an ATA drive but I'd really like to know how to get it to boot from SCSI. When I re-attach the scsi drive I can mount it and read the data I found this info but it did not work Command-Option-Shift-Delete-# Boot from a specific SCSI ID, where # is 0 through 6 Not really important, just more a matter of curiosity thanks I tried an AHA2930 CU controller and all is working with OS9 and above. Glad the machine can boot from SCSI I have a bunch of old scsi drives that I now can find a use for |
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