Cannot mount fat32 on extended partition

C

cduret

Hello,

I used to mount my fat32 partition with the following line in /etc/fstab :

Code: 
/dev/ada0s3s1    /mnt/E      msdosfs   rw,-m=777       0       0

It was working great on 10.3 but it does no work anymore since I have upgraded to 11.0

@ gpart show ada0
Code: 
=>       63  312581745  ada0  MBR  (149G)
         63   82140282     1  freebsd  (39G)
   82140345   61432560     3  ebr  (29G)
  143572905  169008903     4  freebsd  [active]  (81G)

@ gpart show ada0s3
Code: 
=>       0  61432560  ada0s3  EBR  (29G)
         0  61432560       1  fat32  (29G)

@ file -s /dev/ada0s3
Code: 
/dev/ada0s3: DOS/MBR boot sector; partition 1 : ID=0xb, start-CHS (0x3ff,254,63), end-CHS (0x3ff,254,63), startsector 63, 61432497 sectors, extended partition table (last)

It is weird because the /dev/ada0s3s1 file does not exist anymore.

Did I forget something in the upgrade process?
 
Last edited:
cduret said:
It is weird because the /dev/ada0s3s1 file does not exist anymore.
Click to expand...
It never existed. You can't have a slice within a slice. You can create a logical slice within a physical slice but then it would be ada0s5.

Slice numbers follow the device name, prefixed with an s, starting at 1. So “da0s1” is the first slice on the first SCSI drive. There can only be four physical slices on a disk, but there can be logical slices inside physical slices of the appropriate type. These extended slices are numbered starting at 5, so “ada0s5” is the first extended slice on the first SATA disk. These devices are used by file systems that expect to occupy a slice.
Click to expand...

https://www.freebsd.org/doc/en_US.I...k-organization.html#basics-concept-disk-model
 
I did not change my /etc/fstab for several years

Code: 
/dev/ada0s3s1    /mnt/E      msdosfs   rw,-m=777       0       0

Maybe it was wrong from beginning but I am pretty sure I had access to my partition.

Anyway since I upgraded to FreeBSD 11.0 I cannot mount it :

@ sudoi mount -t msdosfs /dev/ada0s3 /mnt/E
Code: 
mount msdosfs: /dev/ada0s3: Invalid argument
 
Last edited:
As I said, it should be ada0s5 if it's an extended partition (from a DOS point-of-view).
 
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