This hack shows how to add a compact flash memory card to an Apple Powerbook 150 using an adaptor board that allows the card to be plugged into a standard IDE bus. Pretty cool if you are nostalgic about breathing life back into your old laptop-turned-doorstop.
Replacing the Internal Disk of a Powerbook 150 with a CompactFlash Card – Link
14 thoughts on “Add memory to your old Apple relics”
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From the title, I thought this was going to be Apple II related…
Stuff from the 1990s is considered a relic now? I feel old now.
IIRC, the 150 was the first Powerbook with IDE instead of the traditional SCSI.
Later PBs like the 1400 series have PC Card slots that allow booting from CF memory in an adapter card.
I too, thought someone worked out a fairly simple way to increase the maximum amount of RAM an old Apple could access, perhaps even an old compact Mac. If I recall, my old SE/30 maxed out at 128MB (great for BSD), but that model was an anomaly. Granted, the HDD is a form of memory, but in common usage ‘memory’ refers to RAM.
Now, the board that the OP created is very interesting. I’ve come across a number of CF cards that won’t boot but it was always easier to just grab a different make/model, but after reading the write-up, it makes sense. This fix may be applicable to much more than just Macs; I’m going to start looking into whether a PC BIOS uses that bit also (anyone know offhand?)…
One final comment/question…is there a way to convince the Mac OS to run from ramdisk and only occasionally flush to CF, a la Puppy Linux?
Yeah, memory usually means RAM.
Not to burst the MAKE bubble… but a much nicer description of this exact hack has been on LOWENDMAC.COM for literally months.
Check it out here:
http://lowendmac.com/macdan/07/0529.html
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