fdisk warning: Re-reading the partition table failed with error 22: Invalid argument.

[shinystar]

Hi,

I am preparing sdcard as my boot device to some another platform. For that I made a partition using fdisk.

sudo fdisk /dev/sdd1

Command (m for help): o

Building a new DOS disklabel with disk identifier 0x3ea88d86.
Changes will remain in memory only, until you decide to write them.
After that, of course, the previous content won't be recoverable.
Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)

Command (m for help): x
Expert command (m for help): h
Number of heads (1-256, default 4): 255

Expert command (m for help): s
Number of sectors (1-63, default 62): 63
Warning: setting sector offset for DOS compatiblity

Expert command (m for help): c
Number of cylinders (1-1048576, default 1015): 240

Now I am creating a bootable 64MB FAT partition and a Linux partition to fill the rest of the space.

Expert command (m for help): r
Command (m for help): n
Command action e extended p primary partition (1-4) p
Partition number (1-4): 1
First cylinder (1-y, default 1): 1
Last cylinder or +size or +sizeM or +sizeK (x-y, default y): +64M
Command (m for help): a
Partition number (1-4): 1
Command (m for help): t Selected partition 1 Hex code (type L to list codes): c Changed system type of partition 1 to c (W95 FAT32 (LBA))

Command (m for help): n
Command action e extended p primary partition (1-4) p
Partition number (1-4): 2
First cylinder (x-y, default x): <Press enter for default>
Using default value x
Last cylinder or +size or +sizeM or +sizeK (x-y, default y): <Press enter for default> Using default value y

Committing the partition changes to the card

Command (m for help): w
The partition table has been altered!

Calling ioctl() to re-read partition table.

WARNING: Re-reading the partition table failed with error 22: Invalid argument.
The kernel still uses the old table. The new table will be used at the next reboot. Syncing disks.

I reboot the system as well, but not make any difference.

When I am doing again to check -
sudo fdisk /dev/sdd1

Command (m for help): p

Disk /dev/sdd1: 1977 MB, 1977545216 bytes
255 heads, 63 sectors/track, 240 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x23f5ecb3

Device Boot Start End Blocks Id System

/dev/sdd1p1 * 1 9 72261 c W95 FAT32 (LBA)
/dev/sdd1p2 10 240 1855507+ 83 Linux

but partition table is not altered yet. Could anyone of you please tell me, what is the wrong here.

ls /dev/sdd*

/dev/sdd /dev/sdd1


Thanks.

[Segfault]

sudo fdisk /dev/sdd1

You want to open the disk sdd, not partition sdd1.

[shinystar]

You want to open the disk sdd, not partition sdd1.

oh yes, correct. Problem solved

Thanks a lot.