[Solved] how to partition my external hard drive?

I just got a new 750gb external hard drive and want to create 2 partitions on it with arch, but
sudo cfdisk /media/Iomega \HDD \750GB/
just tells me
"Opened disk read-only - you have no permission to write".
So how can I create an ext4 partition with 450 gb and another fat32 partition with 300 gb on it?
thanks for the help in advance
deF
Last edited by deF291 (2011-02-24 05:51:33)

okay I tried it but in my browser (thunar) the device is still mounted under /media/Iomega[...] and the previous files that were on the hdd from the beginning are still there..
sudo fdisk /dev/sdb10 says
Disk /dev/sdb10: 750.0 GB, 750021214208 bytes
255 heads, 63 sectors/track, 91184 cylinders, total 1464885184 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
/dev/sdb10p1 * 63 878900084 439450011 83 Linux
/dev/sdb10p2 878900085 1464870959 292985437+ 86 NTFS volume set
but sudo fdisk -l says
Disk /dev/sdb: 750.2 GB, 750156374016 bytes
255 heads, 63 sectors/track, 91201 cylinders, total 1465149168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/sdb doesn't contain a valid partition table
why didn't cfdisk write my partitions? or if it did, why can I see but not access them oO
/e: mount says
/dev/sdb10 on /media/Iomega HDD 750GB type hfsplus (ro,nosuid,nodev,uhelper=hal)
Last edited by deF291 (2011-02-23 12:41:38)

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[Solved] how to partition my external hard drive?

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