6 Replies Latest reply: Jan 24, 2014 12:07 PM by 1518944 RSS

    Best Format for USB Stick




      I am quite new to Solaris 11 and I simply want to format and use some USB Sticks for Solaris 11.

      Want to have a file system that works with files >4GB. Shall I take UFS and how format my stick correctly? I took several instructions from web but always got several errors. Can someone write the right commands? (Example for a 8 GB USB Stick, FAT32 formatted, want to format to UFS)



        • 2. Re: Best Format for USB Stick

          I tried several times, I always got this error:


          root@solarisgfn:~# newfs /dev/rdsk/c10t0d0p0

          newfs: construct a new file system /dev/rdsk/c10t0d0p0: (y/n)? y

          mkfs: bad value for size: 0 must be between 1024 and 0

          mkfs: size reset to default 0

          mkfs: bad value for rps: 1056 must be between 1 and 1000

          mkfs: rps reset to default 60

          seek error on sector -1: Error 0



          If setting ufs under PC-BSD and succesfully mounted there, I try in Solaris and get this error:


          mount: /dev/rdsk/c9t0d0p0 not a block device

          • 3. Re: Best Format for USB Stick

            Can you display information about this device by using this command:


            # rmformat -l


            I rarely use USB sticks but it probably needs an fdisk partition to remove the FAT32 formatting.

            Try this command (using the device path from the rmformat output):


            # fdisk /dev/rdsk/c9t0d0p0


            Thanks, Cindy

            • 4. Re: Best Format for USB Stick

              Hello Cindy,


              All you told me I did many times before. But I have been forwarded.


              I did the following:


              # fdisk /dev/rdsk/c10t0d0p0


              -> Create Partition (Solaris2)


              then I had to do this:


              # newfs /dev/dsk/c10t0d0s2 ; I don't know why ...s2 at the end instead of p2 or p1. The defines all did not work except s2.


              Solaris created a file system but it was corrupt and I had to fix it with


              # fsck /dev/dsk/c10t0d0s2


              I still dont know why had to fix the file system. I've made just one partition on the usb drive.


              So it works now but that cannot be the correct way!


              I wish Oracle will make a gui frontend for managing disks (as PC-BSD does), I ve spent much time for this small job.


              GParted on Solaris does only work with NTFS (why??????)

              • 5. Re: Best Format for USB Stick



                Yes, your points are well taken and well understood by me personally, who has been wrestling with devices and file systems

                for many years. Then, I fell in love with a new file system and no more wrestling!


                I thought I've seen people use GParted with Solaris with NTFS or maybe I've seen people use it at a lower level.

                I don't know why the file system on the stick was corrupt.



                Solaris is a great OS, more than an OS, really an enterprise infrastructure, but some of the underlying device management is still kind of clunky.

                I would recommend that you try using ZFS, which overcomes a lot of the underlying device management. In your case, if you had created an

                fdisk partition, then you would only need 2 more steps. No fussing with slices or partitions or difficult newfs syntax.


                # zpool create pool-name c10t0d0

                # zfs create pool-name/file-system-name


                On a SPARC system, that doesn't use fdisk partitions, you would just plug in a disk and use the 2 commands above.

                Please see the ZFS Admin Guide for a full description:

                Oracle Solaris 11.1 Administration: ZFS File Systems - Oracle Solaris 11.1 Administration: ZFS File Systems


                Thanks, Cindy

                • 6. Re: Best Format for USB Stick

                  I am making a linux certification but don´t like the linux distributions (except Red Hat) but I am really crazy about Solaris. Since I know Solaris 9 there isnt any other OS which I would prefer most. In my school I am using Solaris 11 instead of a Linux and at home I have also Solaris 11. Now I want to install on a girlfriends laptop and it´s important to manage file systems on USB Sticks and Harddrives.


                  I will try with ZFS, thanks for the commands