sheeplover Posted July 8, 2007 Share Posted July 8, 2007 Hi Folks, I installed JaS 10.4.8 (actual release) on a ext. USB-Drive connected to my Acer Aspire 9411 portable. OSX is running fine. Unfortunately, my Vista Home Pro installation on the internal partition no longer boots. I've read some tipps about this in other posts and used hirens boot-cd v9 and tried to fix the mbr. fdisk now shows 3 partitions. 1 fat32 pqservice (Acer restore partition) 2 unkown (should be 1st Vista NTFS partition) 3 unkown (should be 2nd Vista NTFS partition) when booting up the NTFS-DOS from the hiren-cd I can see my files and the 2 ntfs-parts just seem fine. Booting up OSX the 2 partitions are hidden and the HD-Util shows them grayed out. I really need help to get my partitions to work again and boot to Vista. Any suggstions? Thanks Sebastian Link to comment Share on other sites More sharing options...
roxen Posted July 8, 2007 Share Posted July 8, 2007 With fdisk (from Terminal) you can display or set the active boot partition. (or erase all) See "man fdisk" for all options. Here is what I do to boot from another partition "sudo fdisk -e /dev/rdisk0" (or rdisk1) "p" to print the current status "f 2" to flag the second partition active (Partition 2 marked active.) "p" to print the current status "q" to quit and save when asked Link to comment Share on other sites More sharing options...
h4ck1n705h Posted July 8, 2007 Share Posted July 8, 2007 If you want a GUI program, look at a program called DiskPatch. I use it every time I screw something up in MBR or partition tables, it has many options and is very useful. Just a program suggestion, although I'm sure you can fix it from within OS X. Link to comment Share on other sites More sharing options...
skunkmere Posted July 8, 2007 Share Posted July 8, 2007 i had the same problem and i used the vista cd and repaired windows, it kept all my info intact, i abandonded the osx86 on my vista hard disk. im gonna get a second harddrive and use that as my osx installation. Link to comment Share on other sites More sharing options...
sheeplover Posted July 9, 2007 Author Share Posted July 9, 2007 Thanks for your Help! The big problem in fixing the MBR seems to be Vista. There are lots of websites discussing issues on how Vista changes the MBR. I tried fixing it using fdisk from within OSX with no luck. After that, booting the Vista partition only showed a blinking underscore. I also tried several MBR Tools from the actual release of Hirens BootCD. Same result. The only working solution in my case was the Vista-DVD and the System-Restore-Function. Detail on this: http://support.microsoft.com/?scid=kb%3Ben...mp;x=7&y=11 Link to comment Share on other sites More sharing options...
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