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11-02-2012, 08:44 AM
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#1
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Lifer
Join Date: Sep 2000
Posts: 25,630
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How much space on a 16 Gb. flash drive after formatting?
I need to put the data of 3 full DVD's (4.37Gb. each) on flash drives.
Will 16 Gb. drives be large enough?
__________________
Game of Thrones is like Twitter. It's got 140 characters and terrible things are constantly happening.
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11-02-2012, 09:01 AM
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#2
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Lifer
Join Date: Jun 2000
Location: Tupelo
Posts: 15,195
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Should be. My 16GB Mushkin drive has 14.9GB of space formatted as FAT32.
You'd need to format them as NTFS to get around the 2GB filesize limitation.
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11-02-2012, 09:18 AM
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#3
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AnandTech SSD Editor
Join Date: Apr 2011
Location: Helsinki, Finland
Posts: 389
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16GB is ~14.9GiB (Windows uses GB even though in fact is it GiB), so you should be able to fit three DVDs just fine.
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SSD Editor for AnandTech
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11-02-2012, 09:04 PM
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#4
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Super Moderator
Video Cards & Graphics
Join Date: Aug 2000
Posts: 20,026
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Here’s the interesting thing: it depends on the manufacturer as to how much is usable.
I have three different brands of 16GB flash drives, and all three have different amounts of usable space. The lowest of the three has 14.4GB.
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11-02-2012, 10:01 PM
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#5
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Diamond Member
Join Date: Sep 2010
Posts: 4,457
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Quote:
Originally Posted by BFG10K
Here’s the interesting thing: it depends on the manufacturer as to how much is usable.
I have three different brands of 16GB flash drives, and all three have different amounts of usable space. The lowest of the three has 14.4GB.
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Care to name names?
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Quote:
Originally Posted by BoFox
We had to suffer polygonal boobs for a decade because of selfish corporate reasons.
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Main: 3570K + HD7970 + 16GB 1866 + AsRock Extreme4 Z77 + Eyefinity 5760x1080 eIPS
NAS and HTPC/workstation: Supermicro MBD-X9SCM + G530 + 16GB ECC; ASUS P8B WS + i3-3220; 1.168TB of Intel/Crucial/Samsung SSDs + 26TB of WD/Hitachi HDDs
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11-02-2012, 10:52 PM
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#6
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Super Moderator
Video Cards & Graphics
Join Date: Aug 2000
Posts: 20,026
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Quote:
Originally Posted by blastingcap
Care to name names?
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Emtec, Imation, Strontium.
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11-02-2012, 11:18 PM
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#7
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Diamond Member
Join Date: Sep 2010
Posts: 4,457
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Hmm, weird, I can understand different levels of OVERprovisioning but to have half a gig go missing in user-accessible space is bizarre.
__________________
Quote:
Originally Posted by BoFox
We had to suffer polygonal boobs for a decade because of selfish corporate reasons.
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Main: 3570K + HD7970 + 16GB 1866 + AsRock Extreme4 Z77 + Eyefinity 5760x1080 eIPS
NAS and HTPC/workstation: Supermicro MBD-X9SCM + G530 + 16GB ECC; ASUS P8B WS + i3-3220; 1.168TB of Intel/Crucial/Samsung SSDs + 26TB of WD/Hitachi HDDs
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11-04-2012, 05:46 PM
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#8
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Member
Join Date: Aug 2012
Posts: 58
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Quote:
Originally Posted by BFG10K
Here’s the interesting thing: it depends on the manufacturer as to how much is usable.
I have three different brands of 16GB flash drives, and all three have different amounts of usable space. The lowest of the three has 14.4GB.
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have you tried a quick format on them?
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11-05-2012, 01:29 AM
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#9
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Super Moderator
Video Cards & Graphics
Join Date: Aug 2000
Posts: 20,026
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Quote:
Originally Posted by It's Not Lupus
have you tried a quick format on them?
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Yes, they've all been reformatted to exFAT. Out of the box they were FAT32.
__________________
i5 2500K | GTX680 | 16GB DDR3-1600 | Gigabyte GA-P67A-UD3-B3 | 128GB Samsung 830 | 1TB VelociRaptor | X-Fi XtremeMusic | Seasonic X 560W | Antec 902 | 30" HP LP3065
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11-05-2012, 10:09 AM
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#10
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Lifer
Join Date: Aug 2001
Posts: 22,192
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I've noticed that I ALWAYS seem to "lose" space on a flash drive, when I format it in Windows 7. Doesn't matter if I use the HP format tool, or just Windows' built-in format.
Somehow, the mfg is using a FAT32 formatting tool that formats out to more space.
At first, I thought that my testing with vconsole.com 's USB testing (low-level write/read tool) was causing the flash drive to remap bad sectors, and then a subsequent high-level format was showing the effects of that, but when I did that three times to three different flash drives, and their original and new format sizes were identical (Edit: Between the three flash drives - the after format size was smaller than the original though), I realized that it wasn't just bad sectors. (What are the odds that three flash drives have exactly the same number of bad sectors mapped out during a write pass?)
I figure it has to do with the offset that Win7 uses when formatting things, compared to XP and DOS.
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