Evidently Microsoft has begun using the partition sysid #15 for certain types of DOS extended partitions. joerg_wunsch@uriah.heep.sax.de writes: We also recently noticed that Winlose 95 % started to use Sysid #14. Ain't it fun? They always invent something new. Here is my situation: ----------------------------------------------------------------- # fdisk ******* Working on device /dev/rwd0 ******* parameters extracted from in-core disklabel are: cylinders=658 heads=64 sectors/track=63 (4032 blks/cyl) parameters to be used for BIOS calculations are: cylinders=658 heads=64 sectors/track=63 (4032 blks/cyl) Warning: BIOS sector numbering starts with sector 1 Information from DOS bootblock is: The data for partition 0 is: sysid 6,(Primary 'big' DOS (> 32MB)) start 63, size 822465 (401 Meg), flag 0 beg: cyl 0/ sector 1/ head 1; end: cyl 203/ sector 63/ head 63 The data for partition 1 is: sysid 165,(FreeBSD/NetBSD/386BSD) start 822528, size 1225728 (598 Meg), flag 80 beg: cyl 204/ sector 1/ head 0; end: cyl 507/ sector 63/ head 63 The data for partition 2 is: sysid 15,(unknown) start 2048256, size 604800 (295 Meg), flag 0 beg: cyl 508/ sector 1/ head 0; end: cyl 657/ sector 63/ head 63 The data for partition 3 is: <UNUSED> # ls -l /dev/wd0s5 brw-r----- 1 root operator 0, 0x00060002 Jul 13 20:17 /dev/wd0s5 # mount -r -t msdos /dev/wd0s5 /mnt msdos: /dev/wd0s5: Device not configured ----------------------------------------------------------------- This contradicts what the current FreeBSD handbook tells me to expect. Notice that the partition type flag for my extended partition is not recognised by fdisk. Is it maybe not being recognised by the slice code or the msdos filesystem? This partition was created by Win95 OSR2's fdisk. I formatted it as a vanilla FAT16. Fix: I used fdisk -u to change the partition ID to 5 (Extended DOS) and rebooted, and all of a sudden I can mount the /dev/wd0s5 okay. Win95 seems happy enough with the partition type set this way, but I do kind of wonder what might go wrong down the road due to this change. Eliminate Microsoft. I will undertake to reasearch the use of partition ID's a bit more and see if I can come up with a work-around which could go into the Handbook and/or FAQ. How-To-Repeat: This partition was created by Win95 OSR2's fdisk. I formatted it as a vanilla FAT16.
State Changed From-To: open->closed fixed by patch for 7549