Date: Tue, 12 Jul 2005 02:35:34 +0430 From: "Lee Harr" <missive@hotmail.com> To: freebsd-questions@freebsd.org Subject: Re: dd to unused partition (Hey! someone stole my foot-shooting gun!) Message-ID: <BAY7-F11E9071D1E5DD09E2619FDB1DC0@phx.gbl>
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>> >dd if=iso of=/dev/ad0s1 >> >dd: /dev/ad0s1: Read-only filesystem >According to <URL:http://makeashorterlink.com/?S37C2186B>[1] >a workaround might be using > > dd if=/dev/foo of=/dev/ad0 oseek=63 > Ah. Ok. That should have been obvious :oP What about those first few bytes, though? I think I am not getting what I need ... dd if=iso of=/dev/ad0s2 oseek=63 dd if=/dev/ad0s2 of=iso2 truncate -r iso iso2 diff iso iso2 (Binary files iso and iso2 differ) What I am doing is using a 4.11 system to copy a 5.4 boot iso to an unused partition, so that I can boot it and install 5.4. I know it seems roundabout, but it is a very old laptop with either floppy or cd (not both) and the pccard ethernet iface which is working fine under 4.11 is not working in the 5.4 installer -- so no network install. Oh, and the cd drive is not bootable. So, I want to boot the cd image from the hard drive, and use the cd drive for the install after it boots. Anyhow, I used the oseek=63 and copied the iso to ad0s2 ... but I can't boot it. boot: 0:ad(0,2,a)/boot/loader Invalid partition Of course, I am not really sure how to specify ad0s2 from the boot: prompt. Thanks for your help. _________________________________________________________________ Express yourself instantly with MSN Messenger! Download today it's FREE! http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/
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