恢复半加密磁盘
最近我提出了一个错误 ，从我的角度来看，这是Ubuntu安装程序的一个主要烦人的错误。
然而，似乎我安装Ubuntu的麻烦与Ubuntu无关，而是在几天前尝试安装Manjaro Linux时，我不小心选择了“加密磁盘”和“使用LVM”，我认为是简单的新鲜分区表会使加密消失。
现在我已经尝试安装Ubuquu 14.04，Ubiquity崩溃在同一个地方，我发现磁盘显然有某种错误。
就SMART状态（包括在下面）而言，它没有受到物理损坏，并且gparted不会抱怨IO错误格式化或写入磁盘。
我还validation了我使用的所有LiveCD的哈希和完整性。
假设加密是问题，我该怎么做才能恢复我的磁盘，以便Ubuntu安装？ 我是否每个扇区都写满了零？ （这不需要几天？）
如果加密不是问题，那是什么？
假设加密不是问题，那是什么？
这里是smartctl -a /dev/sda ，正如预期的那样屈服，没有错误：
smartctl 6.2 2013-07-26 r3841 [x86_64-linux-3.13.0-24-generic] (local build) Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Device Model: SanDisk SDSSDA240G Serial Number: 153655402044 LU WWN Device Id: 5 001b44 ed2285a3c Firmware Version: U21010RL User Capacity: 240,057,409,536 bytes [240 GB] Sector Size: 512 bytes logical/physical Rotation Rate: Solid State Device Device is: Not in smartctl database [for details use: -P showall] ATA Version is: ACS-2 T13/2015-D revision 3 SATA Version is: SATA >3.1, 6.0 Gb/s (current: 6.0 Gb/s) Local Time is: Sat Dec 26 21:37:31 2015 EST SMART support is: Available - device has SMART capability. SMART support is: Enabled AAM feature is: Unavailable APM level is: 254 (maximum performance) Rd look-ahead is: Disabled Write cache is: Enabled ATA Security is: ENABLED, PW level MAX, not locked, frozen [SEC6] Wt Cache Reorder: Unavailable === START OF READ SMART DATA SECTION === SMART overall-health self-assessment test result: PASSED General SMART Values: Offline data collection status: (0x00) Offline data collection activity was never started. Auto Offline Data Collection: Disabled. Self-test execution status: ( 0) The previous self-test routine completed without error or no self-test has ever been run. Total time to complete Offline data collection: ( 0) seconds. Offline data collection capabilities: (0x71) SMART execute Offline immediate. No Auto Offline data collection support. Suspend Offline collection upon new command. No Offline surface scan supported. Self-test supported. Conveyance Self-test supported. Selective Self-test supported. SMART capabilities: (0x0002) Does not save SMART data before entering power-saving mode. Supports SMART auto save timer. Error logging capability: (0x01) Error logging supported. General Purpose Logging supported. Short self-test routine recommended polling time: ( 2) minutes. Extended self-test routine recommended polling time: ( 10) minutes. Conveyance self-test routine recommended polling time: ( 2) minutes. SMART Attributes Data Structure revision number: 1 Vendor Specific SMART Attributes with Thresholds: ID# ATTRIBUTE_NAME FLAGS VALUE WORST THRESH FAIL RAW_VALUE 5 Reallocated_Sector_Ct -O--CK 100 100 000 - 0 9 Power_On_Hours -O--CK 143 100 000 - 143 12 Power_Cycle_Count -O--CK 100 100 000 - 833 166 Unknown_Attribute -O--CK 100 100 000 - 1 167 Unknown_Attribute -O--CK 100 100 000 - 0 168 Unknown_Attribute -O--CK 100 100 000 - 12 169 Unknown_Attribute -O--CK 100 100 000 - 46 170 Unknown_Attribute -O--CK 100 100 000 - 0 171 Unknown_Attribute -O--CK 100 100 000 - 0 172 Unknown_Attribute -O--CK 100 100 000 - 0 173 Unknown_Attribute -O--CK 100 100 --- - 7 174 Unknown_Attribute -O--CK 100 100 000 - 57 187 Reported_Uncorrect -O--CK 100 100 000 - 0 194 Temperature_Celsius -O---K 061 100 000 - 39 (0 52 0 0 0) 199 UDMA_CRC_Error_Count -O--CK 100 100 000 - 0 230 Unknown_SSD_Attribute -O--CK 100 100 000 - 0 232 Available_Reservd_Space PO--CK 100 100 004 - 100 233 Media_Wearout_Indicator -O--CK 100 100 000 - 1872 241 Total_LBAs_Written ----CK 253 253 000 - 1687 242 Total_LBAs_Read ----CK 253 253 000 - 891 ||||||_ K auto-keep |||||__ C event count ||||___ R error rate |||____ S speed/performance ||_____ O updated online |______ P prefailure warning General Purpose Log Directory Version 1 SMART Log Directory Version 1 [multi-sector log support] Address Access R/W Size Description 0x00 GPL,SL R/O 1 Log Directory 0x01 GPL,SL R/O 1 Summary SMART error log 0x02 GPL,SL R/O 1 Comprehensive SMART error log 0x03 GPL,SL R/O 1 Ext. Comprehensive SMART error log 0x04 GPL,SL R/O 8 Device Statistics log 0x06 GPL,SL R/O 1 SMART self-test log 0x07 GPL,SL R/O 1 Extended self-test log 0x09 GPL,SL R/W 1 Selective self-test log 0x10 GPL,SL R/O 1 NCQ Command Error log 0x11 GPL,SL R/O 1 SATA Phy Event Counters 0x30 GPL,SL R/O 9 IDENTIFY DEVICE data log 0x80-0x9f GPL,SL R/W 16 Host vendor specific log 0xe0 GPL,SL R/W 1 SCT Command/Status 0xe1 GPL,SL R/W 1 SCT Data Transfer SMART Extended Comprehensive Error Log Version: 1 (1 sectors) No Errors Logged SMART Error Log Version: 1 No Errors Logged SMART Extended Self-test Log Version: 1 (1 sectors) No self-tests have been logged. [To run self-tests, use: smartctl -t] SMART Self-test log structure revision number 1 No self-tests have been logged. [To run self-tests, use: smartctl -t] SMART Selective self-test log data structure revision number 1 SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS 1 0 0 Not_testing 2 0 0 Not_testing 3 0 0 Not_testing 4 0 0 Not_testing 5 0 0 Not_testing Selective self-test flags (0x0): After scanning selected spans, do NOT read-scan remainder of disk. If Selective self-test is pending on power-up, resume after 0 minute delay. SCT Commands not supported Device Statistics (GP Log 0x04) Page Offset Size Value Description 1 ===== = = == General Statistics (rev 2) == 1 0x008 4 833 Lifetime Power-On Resets 1 0x010 4 143 Power-on Hours 1 0x018 6 1687 Logical Sectors Written 1 0x020 6 67940491 Number of Write Commands 1 0x028 6 891 Logical Sectors Read 1 0x030 6 42663463 Number of Read Commands 2 ===== = = == Free-Fall Statistics (empty) == 3 ===== = = == Rotating Media Statistics (empty) == 4 ===== = = == General Errors Statistics (rev 1) == 4 0x008 4 0 Number of Reported Uncorrectable Errors 4 0x010 4 57 Resets Between Cmd Acceptance and Completion 5 ===== = = == Temperature Statistics (rev 1) == 5 0x008 1 39 Current Temperature 5 0x010 1 -110 Average Short Term Temperature 5 0x018 1 -124 Average Long Term Temperature 5 0x020 1 51 Highest Temperature 5 0x028 1 10 Lowest Temperature 5 0x030 1 -110 Highest Average Short Term Temperature 5 0x038 1 1 Lowest Average Short Term Temperature 5 0x040 1 -1 Highest Average Long Term Temperature 5 0x048 1 0 Lowest Average Long Term Temperature 5 0x050 4 0 Time in Over-Temperature 5 0x058 1 100 Specified Maximum Operating Temperature 5 0x060 4 0 Time in Under-Temperature 5 0x068 1 0 Specified Minimum Operating Temperature 6 ===== = = == Transport Statistics (rev 1) == 6 0x008 4 4442 Number of Hardware Resets 6 0x018 4 0 Number of Interface CRC Errors 7 ===== = = == Solid State Device Statistics (rev 1) == 7 0x008 1 0 Percentage Used Endurance Indicator SATA Phy Event Counters (GP Log 0x11) ID Size Value Description 0x0001 2 0 Command failed due to ICRC error 0x0002 2 0 R_ERR response for data FIS 0x0003 2 0 R_ERR response for device-to-host data FIS 0x0004 2 0 R_ERR response for host-to-device data FIS 0x0005 2 0 R_ERR response for non-data FIS 0x0006 2 0 R_ERR response for device-to-host non-data FIS 0x0007 2 0 R_ERR response for host-to-device non-data FIS 0x0008 2 0 Device-to-host non-data FIS retries 0x0009 2 0 Transition from drive PhyRdy to drive PhyNRdy 0x000a 2 4 Device-to-host register FISes sent due to a COMRESET 0x000b 2 0 CRC errors within host-to-device FIS 0x000d 2 0 Non-CRC errors within host-to-device FIS 0x000f 2 0 R_ERR response for host-to-device data FIS, CRC 0x0010 2 0 R_ERR response for host-to-device data FIS, non-CRC 0x0012 2 0 R_ERR response for host-to-device non-data FIS, CRC 0x0013 2 0 R_ERR response for host-to-device non-data FIS, non-CRC
在这一点上，我建议完全擦除驱动器。 作为一个免责声明，这真的做了一个完整的擦拭，使任何事情都无法恢复！ 对于硬盘驱动器你可以使用dd if=/dev/zero of=/dev/sdX但看起来你有一个SSD，所以它涉及更多。
首先检查安全性是否未启用（仅供参考：这一切都必须以root / sudo的forms完成，我正在使用/ dev / sda，因为上面的输出显示的是。你可以用相关的驱动器替换它。） ：
# hdparm -I /dev/sda [...truncated...] Security: Master password revision code = 65534 supported not enabled not locked frozen not expired: security count supported: enhanced erase 2min for SECURITY ERASE UNIT. 2min for ENHANCED SECURITY ERASE UNIT.
那个没有启用线路意味着我们可以轻松进行，我们现在启用安全性：
# hdparm --user-master u --security-set-pass tempPassword /dev/sda
密码无关紧要，它也会被清除。 让我们快速进行健全检查以确保有效。
#hdparm -I /dev/sda [...] Security: Master password revision code = 65534 supported enabled [...]
它现在说已启用，因此我们现在可以执行实际擦除：
# hdparm --user-master u --security-erase tempPassword /dev/sda
使用# hdparm -I /dev/sda最后一次健全性检查应该会在第一次检查中显示未启用的内容。
参考： 清空SSD的推荐方法是什么？