I have a USB thumb drive that is properly recognized by FreeDOS on my notebook, but not on my desktop. But syslinux and grub4dos recognize it on both computers.
The pendrive geometry is 974/128/63 according to the desktop BIOS. In the MBR its formatted as 1021/124/62, that is how linux sees it and that is what is seen by the notebook BIOS. The paragraph below is from initdisk.c. If I read it correctly, FreeDOS assumes the correct partition beginning is in CHS from disk, converts it to LBA and back to CHS using the BIOS values. What if the CHS is wrong because the disk was formatted in another computer? If the LBA and CHS values on disk dont match according to BIOS geometry it's the LBA that should be used, not the CHS. * The CHS values in the boot sector are used at a higher level. The CHS * that DOS uses in various INT21/AH=44 IOCTL calls are converted to LBA * using the boot sector values and then converted back to CHS using BIOS * values if necessary. Internally we do LBA as much as possible. ------------------------------------------------------------------------------ All of the data generated in your IT infrastructure is seriously valuable. Why? It contains a definitive record of application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-d2d-c2 _______________________________________________ Freedos-kernel mailing list Freedos-kernel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-kernel
