I'm trying to boot from a SanDisk Cruzer Micro 512MB USB Pen drive but get a kernel panic.
The same drive works perfectly if I plug it in after the machine has booted. I have another 512MB Pen drive ( different manufacturer -- Lexar Jumpdrive ) which can be booted fine. I booted the kernel ( 2.6.16.11 ) with the following options: root=/dev/sda1 rootdelay=10 The 2.6.15.3 kernel exhibits the same symptoms. The motherboard is an VIA EPIA MII10000. If I disable EHCI in the kernel then the key is bootable, but everything is very slow ( because it is not USB 2.0 ). I'm searched the newsgroups and mailing lists and am surprised to see that this isn't a common problem. Anyone have any idea? I would suspect faulty hardware, but the fact that the key works fine once the computer has been booted seems to make that unlikely. I'm not sure how to capture debug information since the problem only happens when booting from the key. The log below was manually typed: [67.8...] Using IPI Shortcut mode [67.8...] Waiting 10sec before mounting root device... [72.8...] Vendor: SanDisk Model: Cruzer Micro Rev: 0.2 [72.8...] Type: Direct-Access ANSI SCSI revision: 02 [72.8...] SCSI device sda: 1000944 512-byte hdwr sections(512MB) [72.8...] sda: Write Protect is off [72.8...] sda: assuming drive cache: write through [72.8...] SCSI device sda: 1000944 512-byte hdwr sections(512MB) [72.8...] sda: Write Protect is off [72.8...] sda: assuming drive cache: write through [72.8...] sda:<7>usb-storage: queuecommand called [102....] usb 1-2: reset high speed USB device using ehci_hcd and address 2 [133....] usb 1-2: reset high speed USB device using ehci_hcd and address 2 [163....] usb 1-2: reset high speed USB device using ehci_hcd and address 2 [193....] usb 1-2: reset high speed USB device using ehci_hcd and address 2 [223....] usb 1-2: reset high speed USB device using ehci_hcd and address 2 [253....] usb 1-2: reset high speed USB device using ehci_hcd and address 2 [254....] sd 0:0:0:0: SCSI error: return code = 0x50000 [254....] end_request: I/O error, dev sda, sector 0 [254....] Buffer I/O error on device sda, logical block 0 [284....] usb 1-2: reset high speed USB device using ehci_hcd and address 2 [314....] usb 1-2: reset high speed USB device using ehci_hcd and address 2 [344....] usb 1-2: reset high speed USB device using ehci_hcd and address 2 [374....] usb 1-2: reset high speed USB device using ehci_hcd and address 2 [404....] usb 1-2: reset high speed USB device using ehci_hcd and address 2 [435....] usb 1-2: reset high speed USB device using ehci_hcd and address 2 [435....] sd 0:0:0:0: Attached scsi removable disk sda [435....] sd 0:0:0:0: Attached scsi generic sg0 type 0 [435....] VFS: Cannot open root device "sda1" or unknown-block(8,1) ... kernel panic ... Thanks, -Dan ------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Linux-usb-users@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
