id summary reporter owner description type status component version resolution keywords cc guest host 1481 WinXP guest does not boot after upgrade to 1.6.0 christoph.lukas "I have been running VirtualBox 1.5.6 on an Ubuntu Gutsy host. I have installed a WinXP guest some month ago. After upgrading VirtualBox from 1.5.6-28266 to 1.6.0-30421 this WinXP guest does not boot any more. It stops just after the Bios screen with 'Media error'. I did not touch the configuration of this guest. This might be caused by a different hard disk layout presented by the bios: {{{ VirtualBox 1.5.6: 00:00:03.958 PIIX3 ATA: LUN#0: disk, CHS=21845/16/63, total number of sectors 22020096 00:00:08.550 Guest Log: BIOS: ata0-0: PCHS=16383/16/63 translation=lba LCHS=1024/255/63 00:00:08.626 Guest Log: BIOS: Booting from Hard Disk... 00:00:08.871 Guest Log: BIOS: int13_harddisk: function 15, unmapped device for ELDL=81 VirtualBox 1.6.0: 00:00:03.259 PIIX3 ATA: LUN#0: disk, PCHS=16383/16/63, total number of sectors 22020096 00:00:03.738 Guest Log: BIOS: ata0-0: PCHS=16383/16/63 LCHS=1024/16/63 00:00:06.223 Guest Log: BIOS: Booting from Hard Disk... 00:00:06.224 Guest Log: BIOS: int13_harddisk: function 02, parameters out of range 0001/0031/0008! }}} Booting the guest system from a knoppix cd both VirtualBox versions show a disk geometry of CHS=21845/16/63 according to fdisk -l. In both VirtualBox versions I can access /dev/hda1 as a valid windows partition. Please let me know if I can supply any further information. Thanks in advance, Christoph" defect closed other VirtualBox 1.6.0 fixed other other