Switching to 10-stable my cdrom no longer works. The Laptop is an Acer 5553g. I tried with a 9.2 live enviroment, it's still working fine, ruling out a hardware problem. in 10-stable I get this error continously: ahcich1: Timeout on slot 0 port 0 ahcich1: is 00000002 cs 00000000 ss 00000000 rs 00000001 tfd 50 serr 00000000 cmd 00006017 (aprobe0:ahcich1:0:0:0): ATAPI_IDENTIFY. ACB: a1 00 00 00 00 40 00 00 00 00 00 00 (aprobe0:ahcich1:0:0:0): CAM status: Command timeout (aprobe0:ahcich1:0:0:0): Error 5, Retries exhausted in 9.2 I get this: cd0 at ahcich1 bus 0 scbus1 target 0 lun 0 cd0: <HL-DT-ST DVDRAM GT31N 1.00> Removable CD-ROM SCSI-0 device cd0: 150.000MB/s transfers (SATA 1.x, UDMA5, ATAPI 12bytes, PIO 8192bytes) cd0: Attempt to query device size failed: NOT READY, Medium not present - tray closed and camcontrol shows the drive as: pass1: <HL-DT-STDVDRAM GT31N 1.00> ATAPI-7 SATA 1.x device pass1: 150.000MB/s transfers (SATA 1.x, UDMA5, ATAPI 12bytes, PIO 8192bytes) protocol ATA/ATAPI-7 SATA 1.x device model HL-DT-STDVDRAM GT31N firmware revision 1.00 serial number KY2A3G91934 cylinders 0 heads 0 sectors/track 0 sector size logical 512, physical 512, offset 0 LBA supported LBA48 not supported PIO supported PIO4 DMA supported WDMA2 UDMA5 Feature Support Enabled Value Vendor read ahead no no write cache no no flush cache no no overlap no Tagged Command Queuing (TCQ) no no Native Command Queuing (NCQ) no SMART no no microcode download no no security no no power management no no advanced power management no no automatic acoustic management no no media status notification no no power-up in Standby no no write-read-verify no no unload no no free-fall no no Data Set Management (DSM/TRIM) no Host Protected Area (HPA) no I don't really need the cd, but this slows boot quite a lot and fills my log file with useless info, so I workaround would be great! Thanks, Mathias