Hello! I have a 233 MHz PowerBook G3 PDQ, and I’m having a bit of trouble getting it to boot. I recently installed OS X Puma and erased OS 9.2 but was successfully using OS X. One evening last week, it refused to reboot. When it powered back on, I got a blinking question mark and the 2GB Toshiba HDD seemed to be trying to spin up and immediately powering down repeatedly. I assumed the drive was dead, so I got a 32GB mSATA SSD and an mSATA to 44-pin IDE adapter. When I got the new SSD, I discovered that it froze when attempting to install Puma from my CD. It seemed to hang (including the mouse cursor) on copying files for the Base System. Similar results on Jaguar. I was able to reinstall OS 9 from CD perfectly normally, but with the extra space, I’d like to be able to dual-boot with OS X. In fact, it seems that any large amount of disk I/O in any OS or installer causes a hang (or even kernel panic in the OS X installer). I’ve tried various methods of copying installer files (including cloning disk images) to a separate partition on the SSD and installing that way, but I’m not able to get the installer to start. I’ve made sure that any installer files I’ve used, as well as the target installation partition, are within the first 8GB of the SSD. I’ve also made sure the SSD was using the Apple Partition Map. As a last resort, I connected the old, possibly damaged, hard drive to my MacBook Pro with an IDE to USB adapter and found that it spun up just fine. I made a disk image of the HDD and attempted to restore it to a partition on the mSATA SSD, but this failed under Big Sur’s Disk Utility, and Carbon Copy Cloner’s restoration of this image was not bootable. Finally, since the drive had spun up when connected to USB on my Pro, I attempted to use it again in the PowerBook. Unfortunately, the disk exhibited the same power cycling behavior as before.