Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: Does anyone know how to make it work on both PC and Mac? It seems it's only working on my Mac and I'd like to fix that.
Document: I had previous purchased a WD hard drive but accidents do happen and with a drop of less than 1ft the harddrive ceased to work. This hard drive is awsome it has dropped accidentally a few times and its still purring like a kitten. I would recommend this hard drive to anyone because we're all human and accidents happen. But its good to know that my information is secure with this hard drive.
I've had many portable HD's and this one is by far the best. I've lost valuable data on other portable HD's which stopped working for no reason at all - however, this Armor A80 has been dropped several times and still works like a charm. I would highly recommend this product to anyone. Keep up the good work SP!
Works like I expected. We have a lot if music and photos spread across 2 Macs, IPads, phones, and a PC. This drive enables us to access all of the media no matter where we are or what computer we are using. I would recommend this drive to anyone needing storage!
If you want your hard drive to work with your Mac for doing Time Machine backups (which I highly recommend) choose Mac OS Extended. Sometimes it's good to make two partitions and one using "MS-DOS fat" if you might be transferring files to and from a Windows machine. The reason is Windows machines and Max can read and write to the "MS-DOS fat" format but your files will need to be under 4 GB each as that's the maximum file size it can hold.6.
I bought this after accidentally dropping my Buffalo hard drive and it completely not working anymore. I decided to get one that was shockproof. So far has work great. Came with the FAT32 format which is what I needed. Highly recommend this external hard drive to anyone. :)
And if I can recover my data off the drive, I will then try to reformat it to see if it's still usable. At this point I've heard it make a few clicking noises while operating, but nothing like the grinding noises I heard from the other drive before it failed. I don't know whether to blame Apple or Silicon Power, but my experience leads me to believe that these portable hard drives aren't entirely compatible with OS X.
The drive appears to be very rugged and I really like the cable storage. However, why put a 5400 RPM drive in a USB 3.0 enclosure? It's way slower than expected. I didn't even know 5400 rpm drives were still being manufactured. The description does not state it's a 5400 rpm drive. For my application, ruggedness is more important than speed, so I'll keep it, but I am disappointed.If you are using USB 2.0, it probably wouldn't make any difference.
Both the supplied USB cable and another I tried apparently do not connect well because a little bit of wiggle means that the computer loses the connection to the disk.When I don't bump it, it seems to work fine although when I first plug it into the computer I now push the connector into the drive a little extra hard to make sure it works.
This item is TERRIBLE. It is nothing like its description. It is slow and unstable.I made the misfortune of relying on the Amazon description and ordered the item prior to travelling for work. When I finally got a chance to use it, it took 5 days to transfer 52 GB of data from a brand new Mac.Don't repeat my mistake. Buy something else.
While other USB cables are snug, it seems like the smallest nudge to this one will cause it to slip out slightly, and thus disconnect it. It loses a star due to that, but honestly, better engineering for the USB cable would make this a 5-star drive.
Answer: had no problem with either PC on windows or linux -- could it be your fire wall?  or you might look at disk management under computer management (this could erase any data from the Mac)...