mnfesq Posted January 12, 2014 Share Posted January 12, 2014 After having too many problems with the 10.9.2 beta, I decided to restore my 10.9.1 installation from Time Machine. I used my Mavericks USB installer to restore from Time Machine backup and all went well. Of course, I anticipated having to deal with the boot0 error because I have a 1 TB hard drive. I followed the usual procedure of installing the boot1h file to the drive's MBR. I actually keep a copy of the boot1h file in the root directory of my USB installer so that all I have to do is boot to the installer, unmount my OS X partition using Disk Utility, and then enter these commands in Terminal: cd /Volumes/USB dd if=boot1h of=/dev/disk0 Usually, that is all I need to do. Typically, all I need is to install Clover in my usual manner. However, I guess I did not wipe out all of the data in my MBR so, when I booted up, I got a boot1 error. After reading as much as I could about it, including comments by RehabMan that boot0 could not find boot1, I realized I needed to change that so I copied the boot1h2 file from my USB installer (placed there when I installed Clover on my USB installer - it's in /usr/standalone/i386/) to the root of my USB installer. I then boot up to the USB installer, unmounted my OS X partition using Disk Utility, and then entered the following commands in Terminal: cd /Volumes/USB dd if=boot1h2 of=/dev/rdisk0s2 That got rid of the boot1 error and it allowed my laptop to boot without the USB installer. I should mention that I have the HP Envy 17t-3200 CTO. It cannot use EFI booting without way more trouble than it's worth (so far) and requires that I use Legacy Bios Booting. Nothing I have written here is original but it took me a long, long time to find this solution and I hope it will be easier for the next person by my posting it here. Link to comment Share on other sites More sharing options...
indiandragon Posted March 18, 2014 Share Posted March 18, 2014 Nice Tip mnfesq, but I think we need to add bs=4094 to the dd command. dd if=boot1h2 of=/dev/rdisk0s2 bs=4096 , Like shown in this video = Only when I added bs=4096 I was able to clear the boot 1 error in couple of 4k HDD’s. Link to comment Share on other sites More sharing options...
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