How to format a USB thumb drive

Q: What are the steps to access a 128GB flash memory drive? The drive is formatted as a largc floppy according to DFSEE. Is there a set of instructions online?

A: At that size if has to be FAT32, and if it is indeed a "large floppy" format (no MBR with a partition table) then it is a no-go for eCS.

For it to work with eCS you must have a PARTITION, format that FAT32, and make sure to ADD LVM information with a name and driveletter. Without that it will not work.

If partitioning and formatting are an option, the steps using just DFSee would be:

1. Wipe the start of the disk, to make sure any existing formatting is gone

   	Mode=FDISK ->
   	   MBR or EBR area operations ->
   	      Wipe start of disk to ZERO ->
   	         ... select the correct disk here ...
   

2. Create a NEW MBR

   	Mode=FDISK ->
   	   MBR or EBR area operations ->
   	      New MBR code, ERASE tables ->
   	         ... select the correct disk here ...
   

3. Create a primary FAT32 partition

   	Mode=FDISK ->
   	   Create new partition ->
   	      ... select the disks freespace area ...
   

4. In the dialog, make sure to select FAT32 as filesystem:

   	FAT, 32-bit type 0C: > Cyl 1023
   

   and to create LVM info for it too:

   	[?] Include LVM information
   

5. In the LVM dialog presented after creating the partition itself, specify a suitable volumename, and a driveletter, or use '*' for the driveletter if it is a removable, to have eCS assign the next available letter when mounting it.

6. After this, eject the removable disk, and re-insert. Then format the new partition with the FAT32 filesystem:

   	Actions ->
   	   Format with FAT filesystem ->
   	      A Partition to be selected ->
   	         ... select the newly created partition ...
   

7. When finished, again EJECT the disk, and re-insert to have it discovered by eCS (LVM and FAT32.IFS)

Volumes created this way should be accessible from Windows and the MAC as well as eCS. I have done it several times on external USB disks and memory-sticks.

Note however that SOME external USB disks simply do not work well with the USB stack in eCS, so there is no guarantee.

Originally posted by Jan van Wijk, author of DFSee; http://www.dfsee.com