[ale] Can't write to SSD

Derek Atkins warlord at MIT.EDU
Tue Nov 22 11:11:48 EST 2016


WOW..  That SSD looks B0RKED!

-derek

Chris Fowler <cfowler at outpostsentinel.com> writes:

> I've ran the secure erase
>
> https://tinyapps.org/docs/wipe_drives_hdparm.html
>
> I've even tried to wipe it.  The secure erase worked because my data is no
> longer there and the system now boots the USB stick I'm using without
> interruption.
>
> [root at cs-loader]# tr '\000' '\377' < /dev/zero | dd bs=16384 of=/dev/sda
> dd: writing '/dev/sda': No space left on device
> 4+978068 records in
> 4+978067 records out
> 8012390400 bytes (7.5GB) copied, 85.521886 seconds, 89.3MB/s
> [root at cs-loader]# fdisk /dev/sda
> Device contains neither a valid DOS partition table, nor Sun, SGI or OSF
> disklabel
> Building a new DOS disklabel with disk identifier 0x9f92ee66.
> 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): n
> Command action
> e extended
> p primary partition (1-4)
> p
> Partition number (1-4): 1
> First cylinder (1-974, default 1):
> Using default value 1
> Last cylinder or +size or +sizeM or +sizeK (1-974, default 974):
> Using default value 974
>
> Command (m for help): p
>
> Disk /dev/sda: 8012 MB, 8012390400 bytes
> 255 heads, 63 sectors/track, 974 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
> Disk identifier: 0x9f92ee66
>
> Device Boot Start End Blocks Id System
> /dev/sda1 1 974 7823623+ 83 Linux
>
> Command (m for help): w
> The partition table has been altered!
>
> Calling ioctl() to re-read partition table.
> Syncing disks.
> [root at cs-loader]# fdisk /dev/sda
> Device contains neither a valid DOS partition table, nor Sun, SGI or OSF
> disklabel
> Building a new DOS disklabel with disk identifier 0xead885c9.
> 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):
>
> It is not locked
>
> [root at cs-loader]# busybox hdparm -I /dev/sda
> .....
>
> Security:
> Master password revision code = 65534
> supported
> not enabled
> not locked
> not frozen
> not expired: security count
> not supported: enhanced erase
> 6min for SECURITY ERASE UNIT.
> Checksum: correct
>
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-- 
       Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory
       Member, MIT Student Information Processing Board  (SIPB)
       URL: http://web.mit.edu/warlord/    PP-ASEL-IA     N1NWH
       warlord at MIT.EDU                        PGP key available


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