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drew7552
Occasional Visitor
Joined: Jul 13, 2007
Posts: 1
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 Posted: Sun Aug 12, 2007 3:43 pm Post subject: defragmenting drive |
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Newbie here with a question. Has anyone tried defragmenting their nuvi in hopes of speeding up and or making it more efficient? Not that mine is overly slow just want it to be the best it can be.  |
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MaFt
Pocket GPS Staff
Joined: Aug 31, 2005
Posts: 15142
Location: Bradford, West Yorkshire
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| Posted: Sun Aug 12, 2007 5:04 pm Post subject: |
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| is flash memory affected by fragmentation? there re no moving parts skipping all over the drive to find what it needs... |
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PaulB2005
Pocket GPS Moderator
Joined: Jan 04, 2006
Posts: 9323
Location: Durham, UK
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| Posted: Sun Aug 12, 2007 6:56 pm Post subject: |
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Flash memory systems can suffer fragmentation but i doubt there will much improvement. You may even risk screwing the device up.
Fragmentation not is caused by moving parts but the way the file system works.
If you have 3 files on a memory stick (1,2,3) then they will save sequentially with no gaps between them. If you delete the 2 file and then add a 4th file "4" (which is bigger then the deleted 2 file) the file system will use the space where the 2 file was and then place the remainder after the 3rd file. The 4th file will be fragmented. Effectively the files will read 1,4a,3,4b
I have a number of flash pen drives and they show signs of fragmentation when analysed with defrag software. |
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tynecomp
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Joined: Aug 11, 2006
Posts: 130
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| Posted: Sun Aug 12, 2007 11:03 pm Post subject: |
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| PaulB2005 wrote: | Fragmentation not is caused by moving parts but the way the file system works.
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I agree that Fragmentation per se has noting to with moving parts but the adverse affects of fragmentation on performance have everything to do with moving parts i.e. will the next sector to be read come under the heads immediately after the previous sector or will you to wait for the disk to do a revolution or will you the head need to somewhere else entirely. It isn't obvious to me why flash memory should be affected by any of these problems. |
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PaulB2005
Pocket GPS Moderator
Joined: Jan 04, 2006
Posts: 9323
Location: Durham, UK
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| Posted: Sun Aug 12, 2007 11:08 pm Post subject: |
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| Quote: | | It isn't obvious to me why flash memory should be affected by any of these problems. |
Me neither. |
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MaFt
Pocket GPS Staff
Joined: Aug 31, 2005
Posts: 15142
Location: Bradford, West Yorkshire
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| Posted: Mon Aug 13, 2007 8:52 am Post subject: |
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tynecomp - that's exactly what i meant with regards to the moving parts. it's not caused by moving parts, but if it's fragmented there's more work for a standard drive to physically access the files
MaFt |
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