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1. #Why is my mac system storage 400gb install#
2. #Why is my mac system storage 400gb drivers#
3. #Why is my mac system storage 400gb windows#

So what technical details (and the issues of volatile data and price) may be preventing the construction of RAM based drives, and is there anything else that may be preventing some entrepreneurial soul from bringing such a thing to market? Is there such a product out there? The closest I have seen are solid-state disks that sit on the other end of a scsi bus, are too expensive, and aren't anywhere near as fast as a PCI implementation could be."

#Why is my mac system storage 400gb drivers#

With the right drivers it could be used as a big RAM disk or for buffercache. It seems like it wouldn't be too hard to design a PCI card to hold 20-30 dimms and make that available through a hardware windowing scheme (like EMS/EMM back in the old 16-bit days). So now it is feasible for one to have a 10-15GB RAM disk, except for one thing - most motherboards won't support more than 2GB total (4 dimm slots x 512MB per dimm). A year ago, that would have cost more like $600. Jah-Wren Ryel asks: "In case you haven't noticed, RAM is incredibly cheap, you can put a gigabyte of PC133 RAM into your machine for less than $60. Has anyone hacked together a solid state drive to take advantage of $60/GB memory prices? I'd really like to be able to boot and run at solid state speed without spending thousands." A gig worth of 8ns seek time storage for $120 anyone? That would just about eliminate any wait in loading programs."īigSlowTarget asks: "There are some previous articles on Slashdot about vendors selling solid state drives, but they all seem to be quite expensive - particularly given the slide in the cost of memory. $12.00 for 128 megs that someone hasn't developed a battery backup version of this to plug into a network or even a bus. Waterlogged asks: "I was just wondering if anybody has heard of a cheap ram based network drive? Seems to me with the ram prices being at about US. Chalk this one up to too much creative writing in college, lack of sleep, and a long frustrating day. What I had meant to say was that since RAM is at its cheapest point in price in recent years, not to say that it was cheaper per-unit-of-currency, which is absolutely false. Are we closing in on that limit, now? Update: 10/11 2a EDT by C:I apologize for not catching the erroneous statement above, earlier. Is there anyone in the market who also has noticed this and is attempting to market a product that will fill this need? Remember this puppy from 2 years ago, and this story, mentioned a year ago? While the first one was a bit of a laugh, the second article does mention a limit to the lifetime of the current MO Hard Drives. Of course, those of you who have noticed this have also wondered, quite reasonably, that it might be cheaper to start building Solid State Hard Drives entirely out of RAM, rather than using the standard ole platters.

Below are some conversions for standard drive sizes.I never quite thought I'd see this in my life time, but RAM is now cheaper when it comes to memory-per-unitofcurrency than hard drives.

#Why is my mac system storage 400gb windows#

The drive is 480,000,000,000 bytes in capacity, and after 480,000,000,000 bytes have been converted by a Windows computer into Gigabytes, the total capacity comes to 447 GB. It is important to understand that these 33GB aren’t lost.

On an 8GB USB drive the difference between the advertised capacity and the actual capacity is about half a gigabyte, while in our example above the difference is a very noticeable 33GB. The larger the numbers are, the larger the discrepancies will be. This is why a 480GB SSD will be correctly reported by a Windows computer as 447GB.

#Why is my mac system storage 400gb install#

This means that when you install a 480,000,000,000 bytes storage drive into a Windows® computer, that computer converts the number of bytes into gigabytes by dividing by 1024 all the way up through the scale, not by dividing by 1,000. The Windows® OS on the other hand uses binary bytes, so 1,024 bytes per Kilobyte, 1,024 KB per Megabyte, and so on. A 480GB SSD is, in other words, actually 480,000,000,000 bytes these are what we call decimal bytes, and it has been an industry standard to use them when advertising storage space.Ī Unix® based operating system like macOS X® or Linux® uses decimal bytes when reporting storage space, so a 480GB SSD will show up as 480GB in Mac Disk Utility for instance. Actual usable capacity may vary.” In other words, the drive capacity is reported on the assumption that 1GB is 1,000,000,000 bytes. If you look at the specifications of any storage device, you will see a note that says something along the lines of ”1 GB = 1 billion bytes. Your drive shows up smaller than advertised because storage drive capacity is calculated and reported slightly differently than other capacities in computing.