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Old 07-10-2005, 04:23 AM   #1
Registered: Jul 2004
Location: Santiago, Chile
Distribution: Ubuntu
Posts: 410

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USB Harddisk

Hi there,

I have a usb powered hard disk. So far it works great (I formatted it with ext3) but I'm wondering if unmounting it before unplugging is the only thing I should take care of, or there could be other things to do? I'm not speaking about performance, but only to make sure that I don't loose data or kill the hard disk.

Thank you a lot in advance!
Old 07-10-2005, 04:52 AM   #2
Registered: Nov 2004
Location: BIOS
Distribution: RHEL3.0, FreeBSD 5.x, Debian 3.x, Soaris x86 v10
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Yes you should unmount it before unplugging and run sync command:

umount /dec/sdaX
Old 07-10-2005, 05:10 AM   #3
Registered: Jul 2004
Location: Santiago, Chile
Distribution: Ubuntu
Posts: 410

Original Poster
Rep: Reputation: 31
Mm... interesting. Could I omit that if I add the sync option when I mount the disk? It looks like sync will sync(hronize?) all the devices... which I'm not sure is "desirable".

Thank you for the info anyway, I'll look for more information (man sync is not very "illustrative")


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