Thank You again, nochmals
First of all, I have no idea what privs are ? My old Power Mac G5 is out of service and it's Power-Supply suffered from Cardiac Arrest 😂. A Friend told me, that I could remove its Hard Drive and put it in one of its extra slots of my Mac Pro 2012, and that way, I could retrieve and see old data from that old Hard Drive. If I understand your reply correctly, YES, I can do that.
That reminds me of a follow up question ! I have kept all my old Macs in storage over the years, from the beginning of the dial-up era, and they also don't work any longer. Is it possible to also remove those hard drives and add them to my Mac Pro 2012 ? Sorry for the may primitive questions, but I work mainly on Human Operating Systems 😆😆
I have just had a lady who did heavy user privileges fiddling with a data and system drive she pulled from her other machine and made it unusable that way.
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If your older machines have compatible hard drive interfaces (need to be Sata for 4.1 and later) or IDE for MP 1.1 to 3.1 (for the optical drive bay) you can attach those drives to classic Mac Pros.
You may find USB or Firewire enclosures with P-ATA / IDE interfaces.
the most beige Macs use SCSI, that's even harder to attach them to "modern" classic Mac Pros as SCSI Hardware is hard to find nowadays. Maybe a beige G3 could be a converting machine. This has P-ATA and SCSI.