Date: Thu, 25 Jan 2001 11:00:23 -0800 (PST) From: Jin Guojun (DSD staff) <jin@george.lbl.gov> To: grog@lemis.com, jgrosch@mooseriver.com Cc: brandon@schoolpeople.net, freebsd-hardware@FreeBSD.ORG Subject: Re: Hard Drive cloning Message-ID: <200101251900.f0PJ0Nn23550@portnoy.lbl.gov>
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} On Thu, Jan 25, 2001 at 06:49:20PM +1030, Greg Lehey wrote: } > On Thursday, 25 January 2001 at 1:46:47 -0800, Brandon DeYoung wrote: } > > Hi all, } > > Does anyone know of a good utility for cloning BSD harddrives? } > > I've been using Norton Ghost on windows and Linux boxes...but it } > > doesn't seem to deal with UFS very well. } > } > dd? } } dd is good if you are only going to do this once or twice but dd can take a } long time. On a dual PIII 800mhz with 2 gig of ram with LVD SCSI disks both } disks were 18 gig 10,000 RMP IBMs it took me 90 to 120 minutes to dd one } disk to another. If you are going to be doing this on a regular basis look } into dump and restore. Let's jump into some real world, say a 40GB drive, with bootable FreeBSD. The file system is 1GB, that is, the rest of 39GB disk space is empty. To clone 100 such dirves, the dump and restore are definitly faster. Q: Can dump and restore also clone the boot blocks? If not, can we just dd the boot block area (can the size of the boot area be known?) and then, restore the file system? or we have to use "dd" in this case. -Jin To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message
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