Cy Schubert ca237cc5e1 Some drives report a geometry that is inconsisetent with the total ... number of sectors reported through the BIOS. Cylinders * heads * sectors may not necessarily be equal to the total number of sectors reported through int13h function 48h. An example of this is when a Mediasonic HD3-U2B PATA to USB enclosure with a 80 GB disk is attached. Loader hangs at line 506 of stand/i386/libi386/biosdisk.c while attempting to read sectors beyond the end of the disk, sector 156906855. I discovered that the Mediasonic enclosure was reporting the disk with 9767 cylinders, 255 heads, 63 sectors/track. That's 156906855 sectors. However camcontrol and Windows 10 both report report the disk having 156301488 sectors, not the calculated value. At line 280 biosdisk.c sets the sectors to the higher of either bd->bd_sectors or the total calculated at line 276 (156906855) instead of the lower and correct value of 156301488 reported by int 13h 48h. This was tested on all three of my Mediasonic HD3-U2B PATA to USB enclosures. Instead of using the higher of bd_sectors (returned by int13h) or the calculated value, this patch uses the lower and safer of the values. Reviewed by: tsoome@ Differential Revision: https://reviews.freebsd.org/D16577		2018-08-03 19:11:00 +00:00
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boot0	Centralize several variables.	2018-02-02 06:32:26 +00:00
boot0sio
boot2	NM and OBJCOPY are already defined for all builds. There's no need to	2018-07-20 05:17:56 +00:00
btx	Prefer uintXX_t to u_intXX_t	2018-03-13 16:33:00 +00:00
cdboot	Centralize several variables.	2018-02-02 06:32:26 +00:00
common	Remove the 'mini libstand in libstand' that util.[ch] provided. These	2017-12-15 23:16:53 +00:00
gptboot	NM and OBJCOPY are already defined for all builds. There's no need to	2018-07-20 05:17:56 +00:00
gptzfsboot	NM and OBJCOPY are already defined for all builds. There's no need to	2018-07-20 05:17:56 +00:00
isoboot	NM and OBJCOPY are already defined for all builds. There's no need to	2018-07-20 05:17:56 +00:00
kgzldr	Catch up to the inflate renaming.	2018-07-13 20:08:18 +00:00
libfirewire	fwohcireg.h is 99% the same between the boot loader and the	2018-03-31 22:02:59 +00:00
libi386	Some drives report a geometry that is inconsisetent with the total	2018-08-03 19:11:00 +00:00
loader	Older zfs boot blocks don't support symlinks. install the link to	2018-07-23 06:04:05 +00:00
mbr	Centralize several variables.	2018-02-02 06:32:26 +00:00
pmbr	Centralize several variables.	2018-02-02 06:32:26 +00:00
pxeldr
zfsboot	NM and OBJCOPY are already defined for all builds. There's no need to	2018-07-20 05:17:56 +00:00
boot.ldscript
Makefile	Collapse zfsloader functionality back down into loader.	2018-07-20 05:17:37 +00:00
Makefile.inc	Add support for linker-type-specific flags	2018-04-19 20:58:09 +00:00