search for: lba0

...udd.ltu.se/~ams/tmp/isohdpfx.force_cbios.bin> Back to Thomas' debug prints. You can download my logger version of isohdpfx called isohdpfd here: <http://www.ludd.ltu.se/~ams/tmp/isohdpfd.bin> <http://www.ludd.ltu.se/~ams/tmp/isohdpfd.S> In the EBIOS case it will print: E<LBA0>/<LBA1>/<LBA2>/<LBA3>/ <Big dump of first loaded sector> Key? and wait for a key press. In the CBIOS case it will print C<LBA0>/<C0>/<H0>/<S0> <LBA1>/<C1>/<H1>/<S1> <LBA2>/<C2>/<H2>/<S2> <LBA3&g...

...d command on affected disk (or assign disk to a loop or nbd device and use sgdisk on affected disk directly from your host). In both cases you will get "Invalid partition data!". Why it happens? After step #4: GPT partition table at LBA1 is created and Protective MBR partition table at LBA0 is created as well. More over Windows automatically creates Microsoft Reserved Partition but this actually doesn't matter: we can delete this partition or pretend it doesn't exist. At this step sgdisk works as expected: it finds both Protective MBR and GPT partitions. Because they both exis...

...tached dummy disk and made xfs file system on a whole device without partitioning it. I mount xfs file system to a "/" and then mkdir and mount other found file systems inside (/fs1, /fs2 etc.). When we decode drive mappings we are looking for a disk with ID 0x0 (it is 4 bytes somewhere LBA0). It is appeared that dummy non-partitioned disk with xfs file system has zeros by offset where diskID is expected to be). So the disk is considered as a candidate to search for partition at offset 0. part-list command (and "parted" which is used under the hood) reports there is 1 parti...

Hi, MartinS wrote: > I want to say I've managed to simulate David's error in > qemu by forcing isohdpfx.bin to fail the EBIOS test. Wow. This could mean that the C/H/S related code is generally unsuitable for the job. > C<LBA0>/<C0>/<H0>/<S0> > <LBA1>/<C1>/<H1>/<S1> > <LBA2>/<C2>/<H2>/<S2> > <LBA3>/<C3>/<H3>/<S3> Anything strange to see with this sequence of addresses which are supposed to be consequtive ? Whatever, if...

...a difference in CX _if_ the EBIOS check call succeeds but doesn't return correct value in BX. Please try this new isohdpfd.bin that indicates which part of EBIOS detection fails: <http://www.ludd.ltu.se/~ams/tmp/isohdpf_dump.2.tgz> * If an EBIOS is not detected outputs: * <X><LBA0>/<C0>/<H0>/<S0> * <LBA1>/<C1>/<H1>/<S1> * <LBA2>/<C2>/<H2>/<S2> * <LBA3>/<C3>/<H3>/<S3> * <Big hex dump of first loaded sector> * Key? * * and waits for a key press. * <X> is A if the EB...

...I have attached dummy disk and made xfs file system on a whole device without partitioning it. I mount xfs file system to a "/" and then mount other found file systems inside (/fs1, /fs2 etc.). When we decode drive mappings we are looking for a disk with ID 0x0 (it is 4 bytes somewhere LBA0). It is appeared that dummy non-partitioned disk with xfs file system has zeros by offset where diskID is expected to be). So the disk is considered as a candidate to search for partition at offset 0. part-list command (and "parted" which is used under the hood) reports there is 1 parti...

Thomas Schmitt wrote: > My main point of interest is which block is really loaded as first one > of isolinux.bin. [Program snipped.] > (It could be shorter if i did not insist in big endian words.) Why insisting? Anyway appended is a dumper version. I could put up a binery version if needed. Let me know if so. -- MartinS /*

Hi, Geert Stappers wrote: > Contact David off-list, he did unsubscribe. Can you tell when he unsubscribed (i.e. which of the messages he got as last one) ? > Martin posted elsewhere in this thread "Thomas, you found the bug" > and provided a patch. Open question is whether the fix helps with David's BIOS. The newest answer from Martin indicates that a failure to read