Date: Wed, 19 Jul 95 10:38:31 EAT From: Yen-Wei Liu <ywliu@lin.wsl.sinica.edu.tw> To: msmith@atrad.adelaide.edu.au (Michael Smith) Cc: questions@freebsd.org Subject: Re: Fail to mount root after recompiling kernel Message-ID: <199507190305.UAA20654@mail.barrnet.net> In-Reply-To: <199507180855.SAA05275@genesis.atrad.adelaide.edu.au>; from "Michael Smith" at Jul 18, 95 6:25 pm
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> > I recompiled one new kernel for the hope of being able to use Fujitsu MO, > > finished it, moved it to /kernel.1, rebooting with kernel.1. This time it > > was worse, FreeBSD failed to mount root sd1a. Ok. I tried to reboot with > > the original kernel if this was my fault with the options I gave to the > > new kernel. It still didn't find the root device, even with the original > > kernel - panic, sync, rebooting. > > Let's guess; you're using a bootmanager, and asking it to boot what, sd(1,a)? > sd(2,a)? > Yes and no. The boot manager selects sd(1,a) itself automatically. When trying to mount sd1a as the root, it simply panics for failing to mount root. I didn't touch the boot manager (i.e. the [[wd(xvxc)]/kernel][-asdfadf] selection screen) after finishing installation, unless compiling kernel would change it. > > I just wonder why both the new and the original kernels didn't recognize > > the device names any more. And these two machines used to run FreeBSD > > 2.0R well. > > There's no problem with 'not recognising device names'; the first is an > odd compatability feature (though I'm mildly surprised that the installer > got it wrong; it never has for me...), the second appears to be > a misconfiguration or misunderstanding on your part. We'll need to know > what you're giving the bootstrap to boot from in order to answer that. > For 'not recognizing device names' issues, I just wonder why I had to use the old device name after re-compiling kernel, and even booting with the *original* kernel (kernel.GENERIC), which had worked just several mintutes ago. Fortunately , the root could be mounted so I could bring it back. For the second machine, I didn't touch the bootstrap code ; I just simply pressed ENTER key to let it go. Is it possible my root partition corrupted ? If so, how come (not asking you; I'm asking myself 8-) ? Anyway, here is the config file for the kernel on my first machine (at my home ) : -- Yen-Wei Liu # # GENERIC -- Generic machine with WD/AHx/NCR/BTx family disks # # GENERIC,v 1.45.2.3 1995/06/05 21:50:41 jkh Exp # machine "i386" cpu "I386_CPU" cpu "I486_CPU" cpu "I586_CPU" ident GENERIC maxusers 10 #options MATH_EMULATE #Support for x87 emulation options INET #InterNETworking options FFS #Berkeley Fast Filesystem options NFS #Network Filesystem options LFS options MSDOSFS #MSDOS Filesystem options "CD9660" #ISO 9660 Filesystem options PROCFS #Process filesystem options KERNFS options KTRACE options "COMPAT_43" #Compatible with BSD 4.3 options "SCSI_DELAY=5" #Be pessimistic about Joe SCSI device #options BOUNCE_BUFFERS #include support for DMA bounce buffers options UCONSOLE #Allow users to grab the console config kernel root on wd0 controller isa0 controller pci0 controller fdc0 at isa? port "IO_FD1" bio irq 6 drq 2 vector fdintr disk fd0 at fdc0 drive 0 disk fd1 at fdc0 drive 1 tape ft0 at fdc0 drive 2 controller wdc0 at isa? port "IO_WD1" bio irq 14 vector wdintr disk wd0 at wdc0 drive 0 disk wd1 at wdc0 drive 1 controller wdc1 at isa? port "IO_WD2" bio irq 15 vector wdintr disk wd2 at wdc1 drive 0 disk wd3 at wdc1 drive 1 #controller ncr0 #controller ahc0 #controller bt0 at isa? port "IO_BT0" bio irq ? vector btintr #controller uha0 at isa? port "IO_UHA0" bio irq ? drq 5 vector uhaintr #controller ahc1 at isa? bio irq ? vector ahcintr #controller ahb0 at isa? bio irq ? vector ahbintr controller aha0 at isa? port "IO_AHA0" bio irq ? drq 5 vector ahaintr controller aic0 at isa? port 0x340 bio irq 11 vector aicintr #controller nca0 at isa? port 0x1f88 bio irq 10 vector ncaintr #controller nca1 at isa? port 0x350 bio irq 5 vector ncaintr #controller sea0 at isa? bio irq 5 iomem 0xc8000 iosiz 0x2000 vector seaintr controller scbus0 device sd0 device ch0 device st0 device cd0 #Only need one of these, the code dynamically grows options SCSIDEBUG options SCSI_REPORT_GEOMETRY #device wt0 at isa? port 0x300 bio irq 5 drq 1 vector wtintr #device mcd0 at isa? port 0x300 bio irq 10 vector mcdintr #device mcd1 at isa? port 0x340 bio irq 11 vector mcdintr controller matcd0 at isa? port 0x300 bio #device scd0 at isa? port 0x230 bio # syscons is the default console driver, resembling an SCO console device sc0 at isa? port "IO_KBD" tty irq 1 vector scintr # Enable this and PCVT_FREEBSD for pcvt vt220 compatible console driver #device vt0 at isa? port "IO_KBD" tty irq 1 vector pcrint #options "PCVT_FREEBSD=210" # pcvt running on FreeBSD 2.1 #options XSERVER # include code for XFree86 device npx0 at isa? port "IO_NPX" irq 13 vector npxintr device sio0 at isa? port "IO_COM1" tty irq 4 vector siointr device sio1 at isa? port "IO_COM2" tty irq 3 vector siointr device sio2 at isa? port "IO_COM3" tty irq 5 vector siointr device sio3 at isa? port "IO_COM4" tty irq 9 vector siointr device lpt0 at isa? port? tty irq 7 vector lptintr device lpt1 at isa? port? tty device lpt2 at isa? port? tty # Order is important here due to intrusive probes, do *not* alphabetize # this list of network interfaces until the probes have been fixed. # Right now it appears that the ie0 must be probed before ep0. See # revision 1.20 of this file. device de0 device ed0 at isa? port 0x280 net irq 5 iomem 0xd8000 vector edintr device ed1 at isa? port 0x300 net irq 5 iomem 0xd8000 vector edintr device ie0 at isa? port 0x360 net irq 7 iomem 0xd0000 vector ieintr device ep0 at isa? port 0x300 net irq 10 vector epintr device ix0 at isa? port 0x300 net irq 10 iomem 0xd0000 iosiz 32768 vector ixintr device le0 at isa? port 0x300 net irq 5 iomem 0xd0000 vector le_intr device lnc0 at isa? port 0x280 net irq 10 drq 0 vector lncintr device lnc1 at isa? port 0x300 net irq 10 drq 0 vector lncintr device ze0 at isa? port 0x300 net irq 5 iomem 0xd8000 vector zeintr device zp0 at isa? port 0x300 net irq 10 iomem 0xd8000 vector zpintr pseudo-device loop pseudo-device ether pseudo-device log pseudo-device sl 1 # ijppp uses tun instead of ppp device #pseudo-device ppp 1 pseudo-device tun 1 pseudo-device pty 16 pseudo-device gzip # Exec gzipped a.out's
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