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All replies
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Helpful answers
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Sep 21, 2012 4:59 AM in response to davscanlonby Shootist007,davscanlon wrote:
I meant to say SSD's don't fragment as they use flash cells, so don't have to be read sequentially as apposed to a disk?
I mis-used the word "digital", i meant "flash technology"
SSD do fragment just like any other type of drive and this also happens on Mac computers. But with SSDs you aren't supposed to DeFrag them as it can have detrimental effect on there life span. SSD flash memory only has a certain number of Writes before it fails. SSDs have wear leveling were data is not written to the same part of the drive over and over. It is written to the complete drive before it goes back and re-writes to a section that has been written to already.
Oh and pay no attention to CSound1. His main purpose on this forum is to brake peoples balls.
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Sep 21, 2012 5:06 AM in response to Shootist007by davscanlon,Ok, cheers for that buddy. I got his humour lol
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Jan 4, 2013 11:57 AM in response to lweilemanby Appleknower,If you have a hard drive and it is not HFS+ formated, then the best way to do it is using Drive Genius 3 to defragment the hard drive. If you are only using the drive on a mac only, consider formating it to HFS+. This will ensure all the data is defragmented. Even if you occasionally you it with Windows, then use Macdrive on Windows to read/write on a HFS+ drive
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Jan 4, 2013 12:11 PM in response to Appleknowerby Csound1,Appleknower wrote:
If you have a hard drive and it is not HFS+ formated, then the best way to do it is using Drive Genius 3
Drive Genius 3 will not defragment drives that are not HFS+, so that won't work at all.
Did you try this before recommending others to waste time and money?
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Feb 16, 2013 8:22 AM in response to OrangeMarlinby PHodara,I beg to differ with you I think the general consensus is that a Mac is a computer.
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Feb 16, 2013 12:07 PM in response to lweilemanby Network 23,lweileman wrote:
How do i do a disk defragment on my mac book pro
The more important question is "why do you want to defragment?" For example, if you are having a performance problem on a Mac, defragmenting is probably not one of the top 10 things that will solve the problem, unlike a PC.
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Feb 18, 2013 3:44 PM in response to lweilemanby bonimac,hi guy's, i'm having a discussion on an dutch forum with a guy who claims he is a Apple Certified Technician and am looking for the truth about this issue.
He claims: OS X needs 10 to 15 percent free disk space, otherwise auto-defragment won't work.
googling for more info in this i found sources like
macrumors guide saying: having at least 10 GB of free space (after a restart) would help for normal usage.
Another source (about Mac's) writes: you should have at least 15 percent free as bare minimum.
I can bring my question down to: is it gigabyte or percent ?
it means a Hugh difference.
Keeping 15 percent free at least on a 3TB drive means 450 GB.
Another way to put my question is:
How much free space does OS X need to do his automatic disk defragment?
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Feb 18, 2013 3:47 PM in response to bonimacby Csound1,It's 15 percent until you reach 10G, then it's enough.
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Feb 18, 2013 4:06 PM in response to Csound1by bonimac,This means you don't now the answer i assume...
I hope somebody has the anwer.
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Feb 18, 2013 4:14 PM in response to bonimacby John Galt,You assume incorrectly. That answer is as credible as any you are likely to find. Ask your Apple Certified Technician for documentation to support his claim of any particular minimum percentage. Please post the reference in a reply.
Keeping 15 percent free at least on a 3TB drive means 450 GB.
That illustrates the reason that 10 GB is approximately correct... "for normal usage".
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Feb 18, 2013 4:21 PM in response to John Galtby bonimac,thx for making this clear!
may i conclude 'for normal usage' includes OS X's auto-disk defragment?
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Feb 18, 2013 4:25 PM in response to bonimacby Csound1,bonimac wrote:
This means you don't now the answer i assume...
I hope somebody has the anwer.
I gave you a useable answer but all you have is attitude I'm out.
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Feb 18, 2013 4:32 PM in response to Csound1by bonimac,sorry Csound1, but i could'n do anything with your answer. Can you translate it please.
Sounds to me like: it's 15 euro's until you reach 10 dollars, then it's enough.
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Feb 18, 2013 4:37 PM in response to Csound1by bonimac,double post deleted. Don't know how to delete post totaly.
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Feb 18, 2013 4:39 PM in response to bonimacby Csound1,bonimac wrote:
sorry Csound1, but i could'n do anything with your answer. Can you translate it please.
Sounds to me like: it's 15 euro's until you reach 10 dollars, then it's enough.
15 percent free, once that 15 percent equals 10G (or more) you have enough free space for the OS to do it's job, more may be better, less will be worse.