I updated a F11 system and now I have four kernels installed...: kernel-PAE-2.6.29.3-155.fc11.i686 kernel-PAE-2.6.29.4-167.fc11.i686 kernel-PAE-2.6.30.5-43.fc11.i686 kernel-PAE-2.6.30.6-53.fc11.i686 Only kernels (29) make the system start, while 30 kernels stops at a certain point of booting... I found these lines in dmesg when working: scsi5 : SCSI emulation for USB Mass Storage devices usb-storage: device found at 3 usb-storage: waiting for device to settle before scanning usbcore: registered new interface driver usb-storage USB Mass Storage support registered. usb-storage: device scan complete scsi 5:0:0:0: Direct-Access Hitachi HTS541680J9AT00 0000 PQ: 0 ANSI: 0 sd 5:0:0:0: [sdb] 156301488 512-byte hardware sectors: (80.0 GB/74.5 GiB) sd 5:0:0:0: [sdb] Write Protect is off sd 5:0:0:0: [sdb] Mode Sense: 27 00 00 00 sd 5:0:0:0: [sdb] Assuming drive cache: write through sd 5:0:0:0: [sdb] 156301488 512-byte hardware sectors: (80.0 GB/74.5 GiB) sd 5:0:0:0: [sdb] Write Protect is off sd 5:0:0:0: [sdb] Mode Sense: 27 00 00 00 sd 5:0:0:0: [sdb] Assuming drive cache: write through sdb: sdb1 sdb2 sd 5:0:0:0: [sdb] Attached SCSI disk sd 5:0:0:0: Attached scsi generic sg2 type 0 EXT4-fs: barriers enabled kjournald2 starting: pid 88, dev dm-0:8, commit interval 5 seconds EXT4-fs: delayed allocation enabled EXT4-fs: file extents enabled EXT4-fs: mballoc enabled EXT4-fs: mounted filesystem dm-0 with ordered data mode SELinux: Disabled at runtime. SELinux: Unregistering netfilter hooks type=1404 audit(1253663261.664:2): selinux=0 auid=4294967295 ses=4294967295 udev: starting version 141 ACPI: WMI: Mapper loaded tg3.c:v3.97 (December 10, 2008) But when system doesn't boot I see last lines on my screen : scsi5 : SCSI emulation for USB Mass Storage devices usb-storage: device found at 3 usb-storage: waiting for device to settle before scanning usbcore: registered new interface driver cms-cypress USB Mass Storage support registered. usb-storage: device scan complete scsi 5:0:0:0: Direct-Access Hitachi HTS541680J9AT00 0000 PQ: 0 ANSI: 0 sd 5:0:0:0: [sdb] 156301488 512-byte hardware sectors: (80.0 GB/74.5 GiB) sd 5:0:0:0: [sdb] Write Protect is off I note this big difference: usbcore: registered new interface driver cms-cypress Please note that I have another system with Philips external USB disk running fine.... Any comment??? -- Antonio Montagnani Skype : antoniomontag SIP: antoniomontag@xxxxxxxxx -- fedora-list mailing list fedora-list@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines