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Old 03-24-2011, 07:43 PM   #1
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How does one determine a USB hard drive capacity in sectors?

Hi All,

How would one determine the capacity in sectors or LBAs of a USB Hard Drive? If I know the USB device number, like from 'lsusb', is there someplace on the system to get other information about the drive? What I want to do is have a program go out and get this information just for the number of LBAs on the drive itself. Partition info doesn't matter for what I am doing.

Elena Quinn
Old 03-24-2011, 08:21 PM   #2
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I believe /sys/block/sdX/size may be in sectors .. multiplying by sector size seems to give the correct disk space

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Old 03-25-2011, 06:40 AM   #3
Registered: Jan 2011
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hi equinn,

if you have linux, plug in the USB, and then from the terminal run the command "fdisk -l". I think this should give you the sectors in the USB.



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