Urgent: Please give me a command line for dd to copy system disk
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From: Ohmster on 26 Jun 2010 16:17 I want to try and upgrade from Fedora 12 to Fedora 13 to see if my problems with compiz will go away. I am sure a clean install will do and I will probably do that anyway, but I want to backup my entire root drive to a 2nd IDE disk in the same computer. Here are the disk stats. Can someone please give me a working dd command line with proper switches to basicly copy the entire disk to the other disk completly so that I can either copy it back or pluck from it later on? Thank you. I am not that good with dd and need to get this done today so I can try to install Fedora 13 this weekend, it is the only time I have to do this. My boot system is on /dev/sda, that is the big 400Gb disk. /dev/sdb is the smaller IDE 2nd drive that contains my previous OS before this one. Thank you. [ohmster(a)ohmster ~]$ df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg_ohmster-lv_root 364G 78G 268G 23% / tmpfs 755M 164K 755M 1% /dev/shm /dev/sda1 194M 105M 79M 58% /boot /dev/mapper/VolGroupOld-LogVolOld00 179G 77G 93G 46% /mnt/old_sys Device Boot Start End Blocks Id System /dev/sda1 * 1 26 204800 83 Linux Partition 1 does not end on cylinder boundary. /dev/sda2 26 48641 390504001 8e Linux LVM Device Boot Start End Blocks Id System /dev/sdb1 * 1 13 104391 83 Linux /dev/sdb2 14 24321 195254010 8e Linux LVM -- ~Ohmster | ohmster59 /a/t/ gmail dot com Put "messageforohmster" in message body (That is Message Body, not Subject!) to pass my spam filter.
From: David W. Hodgins on 26 Jun 2010 16:35 On Sat, 26 Jun 2010 16:17:03 -0400, Ohmster <root(a)dev.nul.invalid> wrote: > I am not that good with dd and need to get this done today so I can try to > install Fedora 13 this weekend, it is the only time I have to do this. > > My boot system is on /dev/sda, that is the big 400Gb disk. /dev/sdb is the > smaller IDE 2nd drive that contains my previous OS before this one. Thank > you. > > [ohmster(a)ohmster ~]$ df -h > Filesystem Size Used Avail Use% Mounted on > /dev/mapper/vg_ohmster-lv_root > 364G 78G 268G 23% / > tmpfs 755M 164K 755M 1% /dev/shm > /dev/sda1 194M 105M 79M 58% /boot > /dev/mapper/VolGroupOld-LogVolOld00 > 179G 77G 93G 46% /mnt/old_sys The dd command wouldn't be appropriate for this, due to the smaller destination space. Try rsync. rsync -acuvxSXH --delete --exclude="lost+found" --exclude=".gvfs" / /mnt/old_sys Also, mount sdb1 as /mnt/old_boot and run rsync -acuvxSXH --delete --exclude="lost+found" --exclude=".gvfs" /boot /mnt/old_boot Be aware that everything old on /mnt/old* will be deleted. Regards, Dave Hodgins -- Change nomail.afraid.org to ody.ca to reply by email. (nomail.afraid.org has been set up specifically for use in usenet. Feel free to use it yourself.)
From: Bit Twister on 26 Jun 2010 17:21 On Sat, 26 Jun 2010 16:35:21 -0400, David W. Hodgins wrote: > The dd command wouldn't be appropriate for this, due to the > smaller destination space. Try rsync. > > rsync -acuvxSXH --delete --exclude="lost+found" --exclude=".gvfs" / /mnt/old_sys > Not sure but you may need some ACLs switches. :)
From: David W. Hodgins on 26 Jun 2010 18:27 On Sat, 26 Jun 2010 17:21:19 -0400, Bit Twister <BitTwister(a)mouse-potato.com> wrote: > On Sat, 26 Jun 2010 16:35:21 -0400, David W. Hodgins wrote: > > >> The dd command wouldn't be appropriate for this, due to the >> smaller destination space. Try rsync. >> rsync -acuvxSXH --delete --exclude="lost+found" --exclude=".gvfs" / /mnt/old_sys > Not sure but you may need some ACLs switches. :) Good point. I've never used them. The options would then be -acuvxSXHA. Don't use the X and A options, if either the source or destination filesystems don't support the extended user options, or access control lists. Regards, Dave Hodgins -- Change nomail.afraid.org to ody.ca to reply by email. (nomail.afraid.org has been set up specifically for use in usenet. Feel free to use it yourself.)
From: Ohmster on 26 Jun 2010 23:07
Mike Jones <luck(a)dasteem.invalid> wrote in news:pan.2010.06.26.22.15.21 @dasteem.invalid: > and then... > > Mount source and target partitions somewhere, and then... > > cp -a /mnt/source/* /mnt/target > > Tadah! All of the ideas are well presented, thank you all so much, gentleman. This cp - a I have used before to move my home dirs and it worked very, very well. I will do something similar to that this time and use a rescue disk. Just for laughs, I did the update anyway, I know that my configs will remain and the new configs will be renamed rpmnew. The system is now Fedora 13, it starts right up, the servers and network shares work just fine, but X, at least in my account, is toast. It works in two D, and if I turn off compiz in "look and feel" I can switch desktops and all that. but when I enable compiz, none of that. You cannot rotate cute or switch desktops at all, not even the regular workspace switcher applet does anything. I tried yum update and goe so many fc12 dependency errors that update failed. A clean install is the only way to get the desktop back again. And yet, the servers, cli, and samba shares all work just fine. Thanks! -- ~Ohmster | ohmster59 /a/t/ gmail dot com Put "messageforohmster" in message body (That is Message Body, not Subject!) to pass my spam filter. |