Date: Sun, 24 Nov 2002 02:13:19 -0800 From: David Schultz <dschultz@uclink.Berkeley.EDU> To: Mark <admin@asarian-host.net> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Disk copying Message-ID: <20021124101319.GC3172@HAL9000.homeunix.com> In-Reply-To: <200211220009.GAM09KI87184@asarian-host.net> References: <courier.3DDC95A0.000041BE@softhome.net> <20021121234452.GJ6062@HAL9000.homeunix.com> <200211220009.GAM09KI87184@asarian-host.net>
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Thus spake Mark <admin@asarian-host.net>: > > Are the disks the same size/geometry? If so: > > > > dd if=/dev/olddisk of=/dev/newdisk bs=32k > > Can "dd" also be used to copy to/fro my RAID disks (40G), to a single 40G > disk? The latter is of a different brand, but has the same size. In other > words: how identical does the geometry need to be? > > If I can use dd here, I think I will use dd to create a "core" system; and > then use additional dumps to backup individual slices. If the drives have the same geometry as far as the BIOS is concerned, you should be okay. Basically, the partition table you copy has to be valid for the target drive. But it's much more reliable to just use dump/restore. If you want to have a spare `live filesystem', just restore the backup to the new disk. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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