ApexDE Posted December 21, 2008 Share Posted December 21, 2008 Hi! After adding a third partition to my HD just for the System, my previous partition remains to be bootable. I removed all system files from it, but it still has the "bootable flag" When booting with the Darwin Bootloader i have to choose between the new Partition and the old, even if it doesn't hold a system anymore. How can i change the bootable flag of that old system partition without reformating so that darwin boots without asking where to boot from? Link to comment https://www.insanelymac.com/forum/topic/142145-howto-change-partition-to-be-not-bootable/ Share on other sites More sharing options...
Meowpard Posted December 21, 2008 Share Posted December 21, 2008 You can change the boot flag with gparted live (0.3.9-4) CD. Or use Acronis disk director. Link to comment https://www.insanelymac.com/forum/topic/142145-howto-change-partition-to-be-not-bootable/#findComment-1009030 Share on other sites More sharing options...
ApexDE Posted December 21, 2008 Author Share Posted December 21, 2008 Thanks, i'll try the gparted live cd. EDIT: I tried it, gparted says bootflag is not set on the old system partition. So there must be another flag Link to comment https://www.insanelymac.com/forum/topic/142145-howto-change-partition-to-be-not-bootable/#findComment-1009047 Share on other sites More sharing options...
ApexDE Posted December 21, 2008 Author Share Posted December 21, 2008 I googled like crazy, seems this is a very special problem once again Here is my output of diskutil: Device Identifier: disk0s3 Device Node: /dev/disk0s3 Part Of Whole: disk0 Device / Media Name: Untitled Volume Name: Daten Mount Point: /Volumes/Daten File System: Journaled HFS+ Journal size 65536 KB at offset 0x1859000 Owners: Enabled Partition Type: Apple_HFS Bootable: Is bootable Media Type: Generic Protocol: SATA SMART Status: Verified Volume UUID: 3968FAFB-F64A-3C84-A6E5-F23CC389ACED Total Size: 629.9 Gi (676323131392 B) (1320943616 512-byte blocks) Free Space: 140.1 Gi (150421024768 B) (293791064 512-byte blocks) Read Only: No Ejectable: Yes Whole: No Internal: No I need to get rid of "bootable: is bootable " without reformatting. Link to comment https://www.insanelymac.com/forum/topic/142145-howto-change-partition-to-be-not-bootable/#findComment-1009102 Share on other sites More sharing options...
ApexDE Posted December 23, 2008 Author Share Posted December 23, 2008 I used hfs_debug and found out that the partition ist "blessed". How do i unbless it without reformating? The bless command line tool seems only be able to bless but not unbless? # HFS Plus Volume Header signature = 0x482b (H+) version = 0x4 lastMountedVersion = 0x4846534a (HFSJ) attributes = 00000000000000000010000000000000 . kHFSVolumeJournaled (volume has a journal) journalInfoBlock = 0x1858 createDate = Sat Oct 25 17:40:12 2008 modifyDate = Tue Dec 23 16:56:50 2008 backupDate = 0 checkedDate = Sun Oct 26 02:40:12 2008 fileCount = 23021 folderCount = 5116 /* not including the root folder */ blockSize = 4096 totalBlocks = 165117952 freeBlocks = 51522087 nextAllocation = 161745088 rsrcClumpSize = 65536 dataClumpSize = 65536 nextCatalogID = 4352825 writeCount = 227734290 encodingsBitmap = 00000000000000000000000000000000 00000010000000000000000011101011 . MacRoman . MacJapanese . MacKorean . MacHebrew . MacGreek . MacCyrillic . MacChineseSimp # Finder Info # Bootable system blessed folder ID finderInfo[0] = 0x95 # Parent folder ID of the startup application finderInfo[1] = 0x8b735 # Open folder ID finderInfo[2] = 0 # Mac OS 9 blessed folder ID finderInfo[3] = 0 # Reserved finderInfo[4] = 0 # Mac OS X blessed folder ID finderInfo[5] = 0x95 # VSDB volume identifier (64-bit) finderInfo[6] = 0x177a0ff3 finderInfo[7] = 0x3a6b6c6b Link to comment https://www.insanelymac.com/forum/topic/142145-howto-change-partition-to-be-not-bootable/#findComment-1011346 Share on other sites More sharing options...
crazy_sumo Posted December 23, 2008 Share Posted December 23, 2008 To unboot a partition from windows u can try this : (be sure to have a vista recovery DVD near you) diskpart list disk select disk X list partition select partition X inactive exit from MAC theres also a similar cmd , but I cant remenber it hmm but u have for sure to go in single mode (-s) at startup Link to comment https://www.insanelymac.com/forum/topic/142145-howto-change-partition-to-be-not-bootable/#findComment-1011824 Share on other sites More sharing options...
ApexDE Posted December 24, 2008 Author Share Posted December 24, 2008 It's not an issue of having the partition active or incactive, the boot info is stored in the volume header information: bless --info /Volumes/Daten finderinfo[0]: 149 => Blessed System Folder is <missing> finderinfo[1]: 571189 => Blessed System File is <missing> finderinfo[2]: 0 => Open-folder linked list empty finderinfo[3]: 0 => No OS 9 + X blessed 9 folder finderinfo[4]: 0 => Unused field unset finderinfo[5]: 149 => OS X blessed folder is <missing> 64-bit VSDB volume id: 0x177A0FF33A6B6C6B Too bad there is no unbless command ... Link to comment https://www.insanelymac.com/forum/topic/142145-howto-change-partition-to-be-not-bootable/#findComment-1012216 Share on other sites More sharing options...
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