Originally posted by Claritin ...
6.) If your hard drive is completely dead and not under warrenty... try sticking it in the freezer wrapped in a paper towel for 5 mins then re-installing it ASAP powering it up and copying the most important data to another drive ASAP. Sometimes (2% likelyhood if I had to stick a number on it) this will work. While I am not sure of the real logic to it... in techie urban legends it has been said that it cools the controller chips if they are over heating.. and also that the HD platter shrinks a tiny amount... either could be legit... all I know is it works on rare occasion.
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*LOL* I thought I was the only one who froze hard drives! I recovered a failing hard drive using exactly that technique. Some component would overheat and slam the heads to the stops after about 30 seconds, just enought time for it to boot, but not enough to be able to read or recover any data. I put it in the refrigerator in a baggy with a dessicant pack overnight, then fired up my computer on a different drive, brought out the cold one and slammed it in and copied the data in the 1.5 minutes it took to overcome the cooldown!
I have had success with freezing the drive as well when my old WD 20GB HD crapped out on me.
Tossed it in the freezer for an hour, then pulled it out of the bag, ran my ass to my computer, put it in the drive bay (The hot-swappable 5.25 inch ones) and transferred about 2GB of data. Saved my ass since that 2GB of data was VERY important
I have heard that dropping, yes, dropping your hard drive can actually help it if the freezer trick doesnt work ?!
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My 256 MB SD card has 243.88 MBs of room. My desktop has a 120 GB hard drive that only allows for 111 GBs to be stored on it. It is very strange, but that's how it is.
I also saved a 6 gig hard drive once by putting it in the fridge. I was shocked it worked, i was able to transfer mot of my stuff off of it. (Yes u heard right, I still use a 6, not 16, not 60, but 6 gig harddrive as a primary)
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The difference? The Marketing is approximately 7% lower.
Now, to address my theory on the Toshiba 512MB card...
SOMETIMES a marketer will get confused and not be intelligent enough to segment properly to maximize their marketing lies!
1KB = 1024 bytes
1MB = 1000 KBytes
Thus: 512MB = 524288000 (which is ~ 500 MB)
As well, have a look in the network world. 10MBit is NOT 10 x 1024 * 1024.
10MBit = 10,000,000 bits/second OR 1.19 MBytes/second
Of course, this is more of a velocity measurement and may not be as applicable, but it's still related. (=
OT Continuation: As for the hard drives being frozen -- there are a few theories surrounding that.
Here's one: The bearings in the drive are perhaps worn; thus, by 'freezing' the drive, you are chilling the grease around/inside the bearings which increases its viscosity and permits the drive the platters to rotate in a different fashion (perhaps even normally in some circumstances!). I could see major problems arising with condensation, however, so I would find difficulty recommending the process myself. /= I suppose as a last resort... wth?
As someone mentioned, if one vendor does that, they probably all do it and it probably applies to CF and SD too. Simply check the manufacturer's specs!
Interesting thread I've seen on just about every pda site.
Memory (RAM, SD, CF) has always been calculated as 1K = 1024bit
Hard Drives are now being calculated as 1K = 1000bit
But now that SD, CF, and all the rest are starting to get to the capacities of hard drives - I wonder if the manufacturers will start to pull the same crap they did on hard drives and just whack that 24bit extra off the K?
I was absolutly shocked when a replacement drive was calculated like that - the original 80MB hard drive I had in my Mac Quadra 660AV was 1K = 1024b, the 8GB that replaced it was calculated 1000b.
I was waiting for the class action lawsuit that never came.
It's like advertising a home for sale - 3200 sq ft (where 1 foot = 10 inches). Its just plain wrong.
FYI - the loss of storage space for your SD card is from formatting. Fat16 or Fat32 will both be as efficient for media under 1GB.
Fat16 is physically limited to addressing 2GB media.
Last edited by Binaryspiral; 07-18-04 at 07:44 PM.
for anyone that cares (and surprisingly it does look like some ppl do!) there was a movement back in the late nineties in which the Mibi and Kibibyte were invented. these were ACTUALLY 1000kb and 1000bytes respectively unfortunately these were never taken up and so we are now in the situation that is illustrated in this thread!
Originally posted by Howard2k That's not true. In the data communications world the measurement IS correct. 10Mb/s is 10,485,760 bits per second.
This is a measure of bandwidth, not velocity.
Sorry for the late post, but I just caught this...
Bandwidth ~= Velocity
A bit can be effectively compared to distance in the data communications world. Of course V = d/T.
At any rate (puns aside), MB/s would accurately portray your measurement; however, that assertation is incorrect otherwise. Bits/second, as bandwidth is measured, is measured by factors of 1000, not factors of 2^10.
1 bps = 1 bit per second
1 kbps = 1000 bits per second
1 mbps = 1000000 bits per second
1 gbps = 1000000000 bits per second, etc. etc. etc.
gigabit = 1250 megabaud = 1,000,000,000 bits / second
I do massive amounts of traffic engineering -- if I were to calculate tera/giga/mega/kilo-bits/second by values of 2^10, I'd be laughed out of the industry in less time than it would take for me to compute the difference.
Let's suppose that you move 10 mbit/s solid over one day. (24 hours = 1440 minutes = 86400 seconds)
How many bytes did you move from point A to point B?
~100.58 GigaBYTES.
If you can move an additional ~4.89 Gigabytes, I salute you. ;)
Do a bit of googling, you won't be greatly disappointed to know that kilo actually does stand for 1000 in some aspects of computational technology.
Ah ok - I see what you're saying. If you remove NRZI or 3B/4B etc. then yep, bang on.
I still don't understand why you say that bandwidth ~= velocity though. Surely latency would be more relevant than bandwidth to be a measure of velocity?
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Originally posted by Howard2k Ah ok - I see what you're saying. If you remove NRZI or 3B/4B etc. then yep, bang on.
I still don't understand why you say that bandwidth ~= velocity though. Surely latency would be more relevant than bandwidth to be a measure of velocity?
Well, let's see.. how to describe.. (=
I suppose that technically:
bandwidth = quantity (bits) / time (seconds)
Especially since the distance is 'fixed' based on that calculation.
latency = time (seconds) that it takes for a bit or series of bits to go from point A to point B and back to point A. In that regard, the distance is variable, but the bits are fixed.
I will think about a good example or way to consider measurement. Perhaps velocity was a poor choice of words to use for a comparison. Perhaps a Voltage - Current comparison would be better? Rudimentarily, Current = flow, Voltage = potential.. hrmn.. probably not in this instance either. Back to my scratch pad for a bit, I'll have a good analagy soon.
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