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1. MAC PEROFRMA 550 EMULATOR MAC OS
2. MAC PEROFRMA 550 EMULATOR INSTALL
3. MAC PEROFRMA 550 EMULATOR SOFTWARE
4. MAC PEROFRMA 550 EMULATOR DOWNLOAD

There are various things that need to be configured.

It’s worth noting that the device itself contains the configuration – not the SD card.

MAC PEROFRMA 550 EMULATOR SOFTWARE

The software should detect the presence of the device and allow you to read and write configuration to the device.

MAC PEROFRMA 550 EMULATOR DOWNLOAD

Using a newer computer, download the software and connect the SCSI2SD via a USB cable. The SCSI2SD can be configured using the software provided here…

MAC PEROFRMA 550 EMULATOR INSTALL

You may even want to create several drives on the SCSI2SD so you can install multiple versions of the OS.

MAC PEROFRMA 550 EMULATOR MAC OS

Higher versions of the Mac OS will be able to read larger drives. Macs before System 7.5 can only use up to 2GB drives – so you would need to either set the device up this way, or partition the drive. In the next section, I’ll cover the set up process.If you don’t feel comfortable opening a Mac up and replacing an internal drive they also make a version that is designed to be used externally – like an old external hard drive. The version I have used and will be referring to is v5. The SCSI2SD comes in different versions depending on your needs.If you do need to supply power it to it (or just want to) you will most likely want to use a 4-pin molex to 4-pin floppy adapter. Depending on your system’s configuration – The SCSI2SD may run right off of the SCSI bus power – meaning you don’t necessarily need to plug a power cable into it.How is the drive going to be physically mounted? It’s smaller than a normal hard drive, so you may find yourself needing an adapter – or drilling out new holes in a hard drive sled to mount it.I have seen some examples where people use a USB extension cable to provide access to the drive on the rear of the Mac. Decide if you are going to want to change the SD card, or use the USB port once the device is installed.You could also use an external drive casing as a makeshift adapter. One option here may be to simply add the SCSI2SD on an internal ribbon cable along side the existing hard drive – as long as they have unique SCSI IDs. First off, ensure you have a way to re-install your OS and move any files off your older drive.Once you get your hands on the SCSI2SD and an SD card, there are a few considerations to make before installing… In troubleshooting SCSI-related problems a program such as Mt.Everything or SCSI probe is quite useful. The Mac won’t operate if two devices share the same ID, or the bus isn’t terminated correctly… so getting everything just right is key. The system will use ID 7, meaning the other devices end up with IDs such as 4,5,6, etc. On 68k Macs, a typical scenario would be a Mac that is internally terminated, a hard drive (usually ID 0) and possibly external SCSI devices such as Zip/CD/external hard drives. SCSI chains must be terminated at both ends of the bus. SCSI, or small computer system interface, allows users to chain 8 devices up on a “bus”. If you’re familiar with SCSI – feel free to skip the next paragraph! What is SCSI? SCSI can be somewhat nuanced – so let’s start off with a little background on SCSI. The SCSI2SD can be a little tricky to get set up, especially if you haven’t used SCSI devices in recent times. There are other benefits too such as reduced noise, reduced heat, higher storage capacities, and an overall smaller form-factor. The device works in pretty much any SCSI-based Mac and is often many times faster than the older mechanical drives.

Put simply, the SCSI2SD is a device that lets you use SD cards in your older mac as if they were normal hard drives. Finding new hard drives for these older SCSI-based 68k Macs can be challenging – but fortunately there’s a better option out there today! One device in particular that is prone to failure in older machines is the mechanical hard drive. One problem with working with computers that date back to the 80s and 90s is that hardware failures become more and more common.