Date: Fri, 21 Nov 2003 10:53:06 +0100 From: Robert Neumann <shritis@gmx.de> To: freebsd-questions@freebsd.org Subject: HD error: BAD SUPER BLOCK Message-ID: <3FBDE082.9020002@gmx.de>
next in thread | raw e-mail | index | archive | help
Hello there, this is the problem: I had a machine running FreeBSD 4.7-Stable. There I added a 80GB harddisk. This harddrive I wanted to install on my other machine running FreeBSD 4.9-Release. This disk is ad6 so I added /dev/ad6 /storage ufs rw 2 2 to fstab and rebooted. While booting the kernel the following error came up: ... /dev/ad6: BAD SUPER BLOCK: MAGIC NUMBER WRONG /dev/ad6: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY ... THE FOLLOWING FILE SYSTEM HAD AN UNEXPECTED INCONSISTENCY /dev/ad6 (/storage) automatic file system check failed . . help! Enter full path name of shell or RETURN for /bin/sh: I hit Return and type fsck which give this output: ... ** /dev/ad6 BAD SUPER BLOCK: MAGIC NUMBER WRONG /dev/ad6; NOT LABELED AS A BSD FILE SYSTEM (unused) I searched the intenet and found this way: fsck -b 32 which gives this output for /dev/ad6: ... BAD SUPER BLOCK: MAGIC NUMBER WRONG Now I tried another way I found on the net: dd if=/dev/ad6 skip=32 of=/dev/ad6 seek=16 bs=512 count=16 which gives this output: 16+0 records in 16+0 records out 8192 bytes transferred in 0.024632 secs (332576 bytes/sec) when I want to leave the shell there are still errors until I remove the added line in /etc/fstab. the output of fdisk -t ad6 is the following: ... sysid 165,(FreeBSD/NetBSD/386BSD) start 63, size 160071597 (78159 Meg), flag 80 (active) beg: cyl 0/ head 1/ sector 1; end: 1023/ head 254/ sector 63; ... the output of /stand/sysinstall ->Configure->Fdisk->ad6 is: Offset Size(ST) END Name PType Desc Subtype Flags 0 63 62 - 6 unused 0 63 160071597 160071659 ad6s1 3 freebsd 165 C 160071660 14868 160086527 - 6 unused 0 I don't know what is wrong but I don't want to lose the data. Any hint is appreciated. Thanks a lot, Robert
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?3FBDE082.9020002>