Hello, - SYSTEM (relevant points) i686-pc-linux-gnu, (B)LFS. ASUS P4S533-MX, Intel Pentium 4. Two ATA ("PATA" native) drives, hdb (Linux) and hda (Windows) Two ATAPI ("PATA" native) opticals, hdc and hdd. SiS651 chipset connected with SiS652 for the integrated IDE Master/Slave controllers featuring Dual Independent IDE channels.
Note: a "PATA" system par excellence. At the time I built it, SATA was still just a glimmer in a visionary's eye. Udev: 136 (latest - not necessarily relevant here.) - PROBLEM - basics System works as expected (i.e., just fine) on 2.6.27 (actually up to 2.6.27.4; haven't tested .5 - .10; assume similar) Compiled and switched to 2.6.28: on boot it hangs with the infamous message, "VFS: Cannot open root device ... Kernel panic - not syncing: VFS: Unable to mount root fs or unknown-block(x,y)" Switched back to 2.6.27: A-OK (no surprise here. Just for the record) Recompiled 2.6.28 with "Sis PATA support" (PATA_SIS) to Yes. Changed 'fstab' from hd... to sd... Changed GRUB "root" line from hdb4 to sdb4 Switched to 2.6.28: A-OK - QUESTION Does anybody know anything about the transition to 2.6.28 changing the "view" of the system to a "Universal", "Uniform", "Consistent", "SATA centric", etc.? Any words, details, etc. which can shed some light on this strange phenomenon will be much appreciated. Thanks, -- Alex ------------------------------------------------------------------------------------------------------------- - PROBLEM - an additional little detail: The CONFIG setting "PATA_SIS" is new in 2.6.28 - PROBLEM - some gory details (for the interested reader) The Boot-up Log excerpts (unexpurgated ) of corresponding relevant sections: * 2.6.27.4 Uniform Multi-Platform E-IDE driver ide_generic: please use "probe_mask=0x3f" module parameter for probing all legacy ISA IDE ports hda: ST340016A, ATA DISK drive hdb: Maxtor 4G100J5, ATA DISK drive hdc: TOSHIBA DVD-ROM SD-M1612, ATAPI CD/DVD-ROM drive hdd: SONY CD-RW CRX175E, ATAPI CD/DVD-ROM drive ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 ide1 at 0x170-0x177,0x376 on irq 15 hda: max request size: 128KiB hda: 78165360 sectors (40020 MB) w/2048KiB Cache, CHS=65535/16/63 hda: cache flushes not supported hda: hda1 hda2 hda3 hdb: max request size: 512KiB hdb: 200108160 sectors (102455 MB) w/2048KiB Cache, CHS=16383/255/63 hdb: cache flushes not supported hdb: hdb1 hdb2 hdb3 < hdb5 hdb6 > hdb4 Driver 'sd' needs updating - please use bus_type methods * 2.6.28 Uniform Multi-Platform E-IDE driver ide_generic: please use "probe_mask=0x3f" module parameter for probing all legacy ISA IDE ports ide-gd driver 1.18 Driver 'sd' needs updating - please use bus_type methods pata_sis 0000:00:02.5: PCI INT A -> GSI 16 (level, low) -> IRQ 16 scsi0 : pata_sis scsi1 : pata_sis ata1: PATA max UDMA/133 cmd 0x1f0 ctl 0x3f6 bmdma 0xb400 irq 14 ata2: PATA max UDMA/133 cmd 0x170 ctl 0x376 bmdma 0xb408 irq 15 ata1.00: ATA-5: ST340016A, 3.05, max UDMA/100 ata1.00: 78165360 sectors, multi 16: LBA ata1.01: ATA-6: Maxtor 4G100J5, GAK819K0, max UDMA/133 ata1.01: 200108160 sectors, multi 16: LBA48 ata1.00: configured for UDMA/100 ata1.01: configured for UDMA/133 ata2.00: ATAPI: TOSHIBA DVD-ROM SD-M1612, 1S08, max UDMA/33 ata2.01: ATAPI: SONY CD-RW CRX175E, 1.1b, max MWDMA2 ata2.00: configured for UDMA/33 ata2.01: configured for PIO4 scsi 0:0:0:0: Direct-Access ATA ST340016A 3.05 PQ: 0 ANSI: 5 sd 0:0:0:0: [sda] 78165360 512-byte hardware sectors: (40.0 GB/37.2 GiB) sd 0:0:0:0: [sda] Write Protect is off sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA sd 0:0:0:0: [sda] 78165360 512-byte hardware sectors: (40.0 GB/37.2 GiB) sd 0:0:0:0: [sda] Write Protect is off sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA sda: sda1 sda2 sda3 sd 0:0:0:0: [sda] Attached SCSI disk scsi 0:0:1:0: Direct-Access ATA Maxtor 4G100J5 GAK8 PQ: 0 ANSI: 5 sd 0:0:1:0: [sdb] 200108160 512-byte hardware sectors: (102 GB/95.4 GiB) sd 0:0:1:0: [sdb] Write Protect is off sd 0:0:1:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA sd 0:0:1:0: [sdb] 200108160 512-byte hardware sectors: (102 GB/95.4 GiB) sd 0:0:1:0: [sdb] Write Protect is off sd 0:0:1:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA sdb: sdb1 sdb2 sdb3 < sdb5 sdb6 > sdb4 Switched to high resolution mode on CPU 1 sd 0:0:1:0: [sdb] Attached SCSI disk scsi 1:0:0:0: CD-ROM TOSHIBA DVD-ROM SD-M1612 1S08 PQ: 0 ANSI: 5 scsi 1:0:1:0: CD-ROM SONY CD-RW CRX175E 1.1b PQ: 0 ANSI: 5 NOTE: Even gorier details can be provided upon request. -- http://linuxfromscratch.org/mailman/listinfo/lfs-support FAQ: http://www.linuxfromscratch.org/lfs/faq.html Unsubscribe: See the above information page