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Old 01-23-2008, 04:09 AM   #1
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Unable to see partitions of external USB disk

I have just now partitioned one external USB disk of 250GB into two partition as below:
/dev/sdb11 Primary Linux 99998.35
/dev/sdb12 Primary Win95 FAT32 138474.34

After rebooting the system and after running "fdisk -l" it still shows the following:

Disk /dev/sdb: 250.0 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/sdb1 1 30401 244196001 7 HPFS/NTFS

But if I run "cfdisk /dev/sdb1" I can see the partitions as /dev/sdb11 and /dev/sdb12 as said above.
Can you tell me where I am going wrong and how can I mount these two partitions.

With regards
Old 01-23-2008, 06:34 AM   #2
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Are you sure you correctly saved and applied the partions that you made. Try it one more time I forgot half the time myself.
Old 01-23-2008, 06:58 AM   #3
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I don't understand sdb11 and sdb12. Where are 1-10?

If you are starting over with this disk, then first delete all the partitions, then create the new ones. If you are using fdisk, after creating the partitions, be sure to enter "w" to write the changes and exit.

Also you would want to enter cfdisk (or fdisk) /dev/sdb (not sdb1).

I wonder if it is possible that you wound up partitioning a partition? (I would not have thought was possible)
Old 01-23-2008, 09:35 AM   #4
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I was wrong in using cfdisk as "cfdisk /dev/sdb1". It should have been "cfdisk /dev/sdb". I can mount the disk in linux and can open from windows as well.
Thanking you once again.


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