newfs: cg 0: bad magic number
Hi *, I'm trying to build a new FS on an IDE disk. All newfs commands end with: # newfs /dev/rwd1a .. .. newfs: cg 0: bad magic number newfs: fsinit1 failed Here is the disk info: # disklabel wd1 # /dev/rwd1c: type: ESDI disk: ESDI/IDE disk label: Maxtor 6B250R0 flags: bytes/sector: 512 sectors/track: 63 tracks/cylinder: 255 sectors/cylinder: 16065 cylinders: 30515 total sectors: 490234752 rpm: 3600 interleave: 1 trackskew: 0 cylinderskew: 0 headswitch: 0 # microseconds track-to-track seek: 0 # microseconds drivedata: 0 16 partitions: #size offset fstype [fsize bsize cpg] a:481950 4.2BSD 2048 16384 16 c:4902347520 unused 0 0 (I tried several fs size (stard or end of the disk, same error) Any idea? Xavier -- Weird enough for government work.
Re: newfs: cg 0: bad magic number
Strange... fdisk wd1 reports: # fdisk wd1 Disk: wd1 geometry: 30515/255/63 [490234752 Sectors] Offset: 0 Signature: 0x180 Starting EndingLBA Info: #: id C H S - C H S [ start:size ] 0: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused 1: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused 2: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused 3: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused When I create some partitions, write them to the disk, restart fdisk, I'm back to the same empty config. Is my disk physically dead? :( Xavier -- There's no place like ~ On Thu, 3 Jan 2008, Xavier Mertens wrote: Hi *, I'm trying to build a new FS on an IDE disk. All newfs commands end with: # newfs /dev/rwd1a .. .. newfs: cg 0: bad magic number newfs: fsinit1 failed Here is the disk info: # disklabel wd1 # /dev/rwd1c: type: ESDI disk: ESDI/IDE disk label: Maxtor 6B250R0 flags: bytes/sector: 512 sectors/track: 63 tracks/cylinder: 255 sectors/cylinder: 16065 cylinders: 30515 total sectors: 490234752 rpm: 3600 interleave: 1 trackskew: 0 cylinderskew: 0 headswitch: 0 # microseconds track-to-track seek: 0 # microseconds drivedata: 0 16 partitions: #size offset fstype [fsize bsize cpg] a:481950 4.2BSD 2048 16384 16 c:4902347520 unused 0 0 (I tried several fs size (stard or end of the disk, same error) Any idea? Xavier -- Weird enough for government work.
Re: newfs: cg 0: bad magic number
Good thing OpenBSD only runs on one platform and one type of computer, eh? Xavier Mertens wrote: ... 16 partitions: #size offset fstype [fsize bsize cpg] a:481950 4.2BSD 2048 16384 16 c:4902347520 unused 0 0 Assuming this is i386 (what people usually assume when they don't bother to show dmesg or even mention platform), you need a one cylinder offset on your 'a' partition (or more accurately, your first partition. TYPICALLY, that's 63 sectors, but not always). What you have here clobbers your MBR, which holds your (now hosed) fdisk partitions. see faq4.html. Nick.
Re: newfs: cg 0: bad magic number
2008/1/3, Xavier Mertens [EMAIL PROTECTED]: When I create some partitions, write them to the disk, restart fdisk, I'm back to the same empty config. Is my disk physically dead? :( http://www.openbsd.org/faq/faq4.html#Install 4.5.2: On platforms which use fdisk, it is important that the first partition skips the first track of the disk, in this case, starting on sector 63. This will vary from machine to machine and disk system to disk system. If an OpenBSD partition is created starting at offset 0, this partition table will end up being overwritten by the OpenBSD partition's Partition Boot Record. The system may still be bootable, but it will be very difficult to maintain, and this configuration is not recommended or supported. Best Martin
Re: newfs: cg 0: bad magic number
On 1/2/08, Xavier Mertens [EMAIL PROTECTED] wrote: 16 partitions: #size offset fstype [fsize bsize cpg] a:481950 4.2BSD 2048 16384 16 your partition is not properly offset from the beginning of the disk, where all the goodies like mbr need to live.
Re: newfs: cg 0: bad magic number
Indeed, this test was bad...
But the same occurs with an offset of 63 sectors :(
Same with fdisk:
fdisk: 1 edit 3
Starting EndingLBA Info:
#: id C H S - C H S [ start:size ]
3: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused
Partition id ('0' to disable) [0 - FF]: [0] (? for help) A6
Do you wish to edit in CHS mode? [n]
offset: [0] 63
size: [0] 488392002
fdisk:*1 q
Writing current MBR to disk.
bash-3.2# fdisk wd1
Disk: wd1 geometry: 30515/255/63 [490234752 Sectors]
Offset: 0 Signature: 0x100
Starting EndingLBA Info:
#: id C H S - C H S [ start:size ]
0: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused
1: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused
2: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused
3: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused
Xavier
--
Secret hacker rule #11: hackers read manuals.
On Wed, 2 Jan 2008, Nick Holland wrote:
Good thing OpenBSD only runs on one platform and one type of computer,
eh?
Xavier Mertens wrote:
..
16 partitions:
#size offset fstype [fsize bsize cpg]
a:481950 4.2BSD 2048 16384 16
c:4902347520 unused 0 0
Assuming this is i386 (what people usually assume when they don't
bother to show dmesg or even mention platform), you need a one
cylinder offset on your 'a' partition (or more accurately, your
first partition. TYPICALLY, that's 63 sectors, but not always).
What you have here clobbers your MBR, which holds your (now hosed)
fdisk partitions.
see faq4.html.
Nick.
Re: newfs: cg 0: bad magic number
Ok, I fixed the disk partitions: # fdisk wd1 Disk: wd1 geometry: 30515/255/63 [490234752 Sectors] Offset: 0 Signature: 0x0 Starting EndingLBA Info: #: id C H S - C H S [ start:size ] 0: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused 1: A6 0 1 1 - 30514 254 63 [ 63: 490223412 ] OpenBSD 2: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused 3: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused # disklabel wd1 # Inside MBR partition 1: type A6 start 63 size 490223412 # /dev/rwd1c: type: ESDI disk: ESDI/IDE disk label: Maxtor 6B250R0 flags: bytes/sector: 512 sectors/track: 63 tracks/cylinder: 255 sectors/cylinder: 16065 cylinders: 30515 total sectors: 490234752 rpm: 3600 interleave: 1 trackskew: 0 cylinderskew: 0 headswitch: 0 # microseconds track-to-track seek: 0 # microseconds drivedata: 0 16 partitions: #size offset fstype [fsize bsize cpg] a:490223412 63 4.2BSD 2048 16384 16 c:4902347520 unused 0 0 But I still have the same error at the end of the newfs: newfs: cg 0: bad magic number newfs: fsinit1 failed :( Xavier -- Hint: A reload a day, keeps the TAC away . On Wed, 2 Jan 2008, Ted Unangst wrote: On 1/2/08, Xavier Mertens [EMAIL PROTECTED] wrote: 16 partitions: #size offset fstype [fsize bsize cpg] a:481950 4.2BSD 2048 16384 16 your partition is not properly offset from the beginning of the disk, where all the goodies like mbr need to live.
Re: newfs: cg 0: bad magic number
Is that normal to have a signature of 0x0 reported by fdisk? On my other disks, signature is 0xAA55. Thanks for your help! -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Xavier Mertens Sent: jeudi 3 janvier 2008 2:28 To: misc@openbsd.org Subject: Re: newfs: cg 0: bad magic number Ok, I fixed the disk partitions: # fdisk wd1 Disk: wd1 geometry: 30515/255/63 [490234752 Sectors] Offset: 0 Signature: 0x0 Starting EndingLBA Info: #: id C H S - C H S [ start:size ] 0: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused 1: A6 0 1 1 - 30514 254 63 [ 63: 490223412 ] OpenBSD 2: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused 3: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused # disklabel wd1 # Inside MBR partition 1: type A6 start 63 size 490223412 # /dev/rwd1c: type: ESDI disk: ESDI/IDE disk label: Maxtor 6B250R0 flags: bytes/sector: 512 sectors/track: 63 tracks/cylinder: 255 sectors/cylinder: 16065 cylinders: 30515 total sectors: 490234752 rpm: 3600 interleave: 1 trackskew: 0 cylinderskew: 0 headswitch: 0 # microseconds track-to-track seek: 0 # microseconds drivedata: 0 16 partitions: #size offset fstype [fsize bsize cpg] a:490223412 63 4.2BSD 2048 16384 16 c:4902347520 unused 0 0 But I still have the same error at the end of the newfs: newfs: cg 0: bad magic number newfs: fsinit1 failed :( Xavier -- Hint: A reload a day, keeps the TAC away . On Wed, 2 Jan 2008, Ted Unangst wrote: On 1/2/08, Xavier Mertens [EMAIL PROTECTED] wrote: 16 partitions: #size offset fstype [fsize bsize cpg] a:481950 4.2BSD 2048 16384 16 your partition is not properly offset from the beginning of the disk, where all the goodies like mbr need to live.
