Sorry to disappear for a bit. Of necessity I've migrated to another working system and I'm in Arch. Utility here is fsck.hfs as opposed to hpfsck. I'd like to post that output. mdadm --build /dev/md0 --level=0 -n2 --chunk=8K /dev/sdb2 /dev/sdc2 works, then, fsck.hfs -v /dev/md0 *** Checking volume MDB drSigWord = 0xffffffff drCrDate = Mon Feb 6 06:28:15 2040 drLsMod = Mon Feb 6 06:28:15 2040 drAtrb = BUSY | HLOCKED | UMOUNTED | BBSPARED | BVINCONSIS | COPYPROT | SLOCKED drNmFls = 65535 drVBMSt = 65535 drAllocPtr = 65535 drNmAlBlks = 65535 drAlBlkSiz = 4294967295 drClpSiz = 4294967295 drAlBlSt = 65535 drNxtCNID = 4294967295 drFreeBks = 65535 drVN = "" drVolBkUp = Mon Feb 6 06:28:15 2040 drVSeqNum = 4294967295 drWrCnt = 4294967295 drXTClpSiz = 4294967295 drCTClpSiz = 4294967295 drNmRtDirs = 65535 drFilCnt = 4294967295 drDirCnt = 4294967295 drEmbedSigWord = 0xffff drEmbedExtent = 65535[65535..131069] drXTFlSize = 4294967295 drXTExtRec = 65535[65535..131069]+65535[65535..131069]+65535[65535..131069] drCTFlSize = 4294967295 drCTExtRec = 65535[65535..131069]+65535[65535..131069]+65535[65535..131069] Bad volume signature (0xffffffff); should be 0x4244. Fix? y Volume creation date is in the future (Mon Feb 6 06:28:15 2040). Fix? y Volume last modify date is in the future (Mon Feb 6 06:28:15 2040). Fix? y Volume bitmap starts at unusual location (1), not 3. Fix? y *** Checking volume structure *** Checking extents overflow B*-tree It's possible that I was unwise in accepting the changes from fsck. >> >> How is your C coding? You could >> apt-get source hfsplus >> and hack the code and try to build it yourself.... >> Still fine. By now not clear if this is what's needed. Al -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html