[Galaxy S I9000 Q&A, Help & Troubleshooting] Cordial Humanoid:
Here is the fourth part of the TWRP recovery log (attempted ROM installation a fifth time; then tried restoring the TWRP backup, which fails as /data cannot be mounted or wiped).

I:Set page: 'install'

I:Set page: 'flash_confirm'

I:Set page: 'flash_zip'

I:Set page: 'flash_zip'

Installing '/sdcard/cm-Mackay_ROM_4.9.6.zip'...

Checking for MD5 file...

I:Cannot find file /sdcard/cm-Mackay_ROM_4.9.6.zip.md5

Skipping MD5 check: no MD5 file found.

E:Error executing updater binary in zip '/sdcard/cm-Mackay_ROM_4.9.6.zip'

Error flashing zip '/sdcard/cm-Mackay_ROM_4.9.6.zip'

Updating partition details...

E:Unable to mount '/data'

I:Actual block device: '', current file system: 'ext4'

I:Can't probe device /dev/mapper/lvpool-system

E:Unable to mount '/system'

I:Actual block device: '/dev/mapper/lvpool-system', current file system: 'ext4'

I:Unable to mount '/emmc'

I:Actual block device: '', current file system: 'vfat'

I:Set page: 'flash_done'

I:Set page: 'clear_vars'

I:Set page: 'main2'

I:Set page: 'restore'

I:Set page: 'restore_select'

E:Unable to locate '/datadata' partition for restore.

I:Set page: 'restore_run'

[RESTORE STARTED]

Restore folder: '/sdcard/TWRP/BACKUPS/323510E0CC2B00EC/2014-07-06--06-07-06'

Skipping MD5 check based on user setting.

Restoring 7 partitions...

I:Restore filename is: recovery.mtd.win

I:Restore file system is: 'mtd'.

Restoring Recovery...

I:Erase command: 'erase_image recovery'

I:Restore command: 'flash_image recovery '/sdcard/TWRP/BACKUPS/323510E0CC2B00EC/2014-07-06--06-07-06/recovery.mtd.win''

mtd: successfully wrote block at 0

mtd: successfully wrote block at 40000

mtd: successfully wrote block at 80000

mtd: successfully wrote block at c0000

mtd: successfully wrote block at 100000

mtd: successfully wrote block at 140000

mtd: successfully wrote block at 180000

mtd: successfully wrote block at 1c0000

mtd: successfully wrote block at 200000

mtd: successfully wrote block at 240000

mtd: successfully wrote block at 280000

mtd: successfully wrote block at 2c0000

mtd: successfully wrote block at 300000

mtd: successfully wrote block at 340000

mtd: successfully wrote block at 380000

mtd: successfully wrote block at 3c0000

mtd: successfully wrote block at 400000

mtd: successfully wrote block at 440000

mtd: successfully wrote block at 480000

mtd: successfully wrote block at 4c0000

mtd: successfully wrote block at 500000

mtd: successfully wrote block at 540000

mtd: successfully wrote block at 580000

mtd: successfully wrote block at 5c0000

mtd: successfully wrote block at 600000

mtd: successfully wrote block at 640000

mtd: successfully wrote block at 680000

mtd: successfully wrote block at 6c0000

mtd: successfully wrote block at 700000

mtd: successfully wrote block at 740000

[Recovery done (2 seconds)]

I:Restore filename is: boot.mtd.win

I:Restore file system is: 'mtd'.

Restoring Boot...

I:Erase command: 'erase_image boot'

I:Restore command: 'flash_image boot '/sdcard/TWRP/BACKUPS/323510E0CC2B00EC/2014-07-06--06-07-06/boot.mtd.win''

mtd: successfully wrote block at 0

mtd: successfully wrote block at 40000

mtd: successfully wrote block at 80000

mtd: successfully wrote block at c0000

mtd: successfully wrote block at 100000

mtd: successfully wrote block at 140000

mtd: successfully wrote block at 180000

mtd: successfully wrote block at 1c0000

mtd: successfully wrote block at 200000

mtd: successfully wrote block at 240000

mtd: successfully wrote block at 280000

mtd: successfully wrote block at 2c0000

mtd: successfully wrote block at 300000

mtd: successfully wrote block at 340000

mtd: successfully wrote block at 380000

mtd: successfully wrote block at 3c0000

mtd: successfully wrote block at 400000

mtd: successfully wrote block at 440000

mtd: successfully wrote block at 480000

mtd: successfully wrote block at 4c0000

mtd: successfully wrote block at 500000

mtd: successfully wrote block at 540000

mtd: successfully wrote block at 580000

mtd: successfully wrote block at 5c0000

mtd: successfully wrote block at 600000

mtd: successfully wrote block at 640000

mtd: successfully wrote block at 680000

mtd: successfully wrote block at 6c0000

mtd: successfully wrote block at 700000

mtd: successfully wrote block at 740000

[Boot done (4 seconds)]

I:Restore filename is: data.ext4.win

I:Restore file system is: 'ext4'.

Wiping Data...

Formatting Data using make_ext4fs...

I:make_ext4fs command: make_ext4fs -l -16384

Expected filename after options

make_ext4fs [ -l <len> ] [ -j <journal size> ] [ -b <block_size> ]

[ -g <blocks per group> ] [ -i <inodes> ] [ -I <inode size> ]

[ -L <label> ] [ -f ] [ -a <android mountpoint> ]

[ -S file_contexts ]

[ -z | -s ] [ -t ] [ -w ] [ -c ] [ -J ]

<filename> [<directory>]

E:Unable to wipe '/data'.

I:Set page: 'action_complete'

I:Set page: 'clear_vars'

I:Set page: 'restore_select'

E:Unable to locate '/datadata' partition for restore.

I:Set page: 'restore_run'

[RESTORE STARTED]

Restore folder: '/sdcard/TWRP/BACKUPS/323510E0CC2B00EC/2014-07-06--06-07-06'

Skipping MD5 check based on user setting.

Restoring 7 partitions...

I:Restore filename is: recovery.mtd.win

I:Restore file system is: 'mtd'.

Restoring Recovery...

I:Erase command: 'erase_image recovery'

I:Restore command: 'flash_image recovery '/sdcard/TWRP/BACKUPS/323510E0CC2B00EC/2014-07-06--06-07-06/recovery.mtd.win''

mtd: successfully wrote block at 0

mtd: successfully wrote block at 40000

mtd: successfully wrote block at 80000

mtd: successfully wrote block at c0000

mtd: successfully wrote block at 100000

mtd: successfully wrote block at 140000

mtd: successfully wrote block at 180000

mtd: successfully wrote block at 1c0000

mtd: successfully wrote block at 200000

mtd: successfully wrote block at 240000

mtd: successfully wrote block at 280000

mtd: successfully wrote block at 2c0000

mtd: successfully wrote block at 300000

mtd: successfully wrote block at 340000

mtd: successfully wrote block at 380000

mtd: successfully wrote block at 3c0000

mtd: successfully wrote block at 400000

mtd: successfully wrote block at 440000

Starting TWRP 2.5.0.0 on Sun Jul 6 11:59:11 2014

I:Internal path defined: '/sdcard'

I:External path defined: '/emmc'

TW_NO_REBOOT_BOOTLOADER := true

I:Lun file '/sys/devices/platform/s3c-usbgadget/gadget/lun0/file'

Starting the UI...Pixel format: 480x800 @ 16bpp

Pixel format: BGR_565

framebuffer: fd 4 (480 x 800)

=> Linking mtab

=> Processing recovery.fstab

I:Processing '/recovery'

I:Processing '/boot'

I:Processing '/radio'

I:Processing '/data'

I:Processing '/cache'

I:Processing '/datadata'

I:Processing '/sdcard'

I:Unhandled fstab information: 'lun=/sys/devices/platform/s3c-usbgadget/gadget/lun0/file', 39, line: '/sdcard	vfat	/dev/block/mmcblk0p1 lun=/sys/devices/platform/s3c-usbgadget/gadget/lun0/file

'

I:Creating Android Secure: /sdcard/.android_secure

I:Backup folder set to '/sdcard/TWRP/BACKUPS/323510E0CC2B00EC'

I:Settings storage is '/sdcard'

I:Processing '/system'

I:Processing '/emmc'

I:Unhandled fstab information: 'lun=/sys/devices/platform/s3c-usbgadget/gadget/lun1/file', 37, line: '/emmc	vfat	/dev/block/mmcblk1p1 lun=/sys/devices/platform/s3c-usbgadget/gadget/lun1/file

'

Updating partition details...

E:Unable to mount '/data'

I:Actual block device: '', current file system: 'ext4'

I:Can't probe device /dev/mapper/lvpool-system

E:Unable to mount '/system'

I:Actual block device: '/dev/mapper/lvpool-system', current file system: 'ext4'

I:Unable to mount '/emmc'

I:Actual block device: '', current file system: 'vfat'

I:Unmounting main partitions...

Partition Logs:

/recovery | /dev/block/mtdblock1 | Size: 7MB

Flags: Can_Be_Backed_Up IsPresent

Primary_Block_Device: /dev/block/mtdblock1

Display_Name: Recovery

Storage_Name: recovery

Backup_Path: /recovery

Backup_Name: recovery

Backup_Display_Name: Recovery

Storage_Path: /recovery

Current_File_System: mtd

Fstab_File_System: mtd

MTD_Name: recovery

Backup_Method: flash_utils

/boot | /dev/block/mtdblock0 | Size: 7MB

Flags: Can_Be_Backed_Up IsPresent

Primary_Block_Device: /dev/block/mtdblock0

Display_Name: Boot

Storage_Name: boot

Backup_Path: /boot

Backup_Name: boot

Backup_Display_Name: Boot

Storage_Path: /boot

Current_File_System: mtd

Fstab_File_System: mtd

MTD_Name: boot

Backup_Method: flash_utils

/radio | /dev/block/mtdblock5 | Size: 16MB

Flags: IsPresent

Primary_Block_Device: /dev/block/mtdblock5

Display_Name: radio

Storage_Name: radio

Backup_Path: /radio

Backup_Name: radio

Backup_Display_Name: radio

Storage_Path: /radio

Current_File_System: mtd

Fstab_File_System: mtd

MTD_Name: radio

Backup_Method: flash_utils

/data | | Size: 0MB Used: 0MB Free: 0MB Backup Size: 0MB

Flags: Can_Be_Mounted Can_Be_Wiped Can_Be_Backed_Up Wipe_During_Factory_Reset Wipe_Available_in_GUI Has_SubPartition

Primary_Block_Device: /dev/mapper/lvpool-userdata

Length: -16384

Display_Name: Data

Storage_Name: Data

Backup_Path: /data

Backup_Name: data

Backup_Display_Name: Data

Storage_Path: /data

Current_File_System: ext4

Fstab_File_System: ext4

Backup_Method: files

/cache | /dev/block/mtdblock3 | Size: 17MB Used: 2MB Free: 15MB Backup Size: 2MB

Flags: Can_Be_Mounted Can_Be_Wiped Can_Be_Backed_Up Wipe_During_Factory_Reset Wipe_Available_in_GUI IsPresent

Primary_Block_Device: /dev/block/mtdblock3

Display_Name: Cache

Storage_Name: Cache

Backup_Path: /cache

Backup_Name: cache

Backup_Display_Name: Cache

Storage_Path: /cache

Current_File_System: yaffs2

Fstab_File_System: yaffs2

MTD_Name: cache

Backup_Method: files

/datadata | /dev/block/mtdblock2 | Size: 422MB Used: 18MB Free: 403MB Backup Size: 18MB

Flags: Can_Be_Mounted Can_Be_Wiped Can_Be_Backed_Up Wipe_During_Factory_Reset Is_SubPartition IsPresent

SubPartition_Of: /data

Primary_Block_Device: /dev/block/mtdblock2

Display_Name: DataData

Storage_Name: DataData

Backup_Path: /datadata

Backup_Name: datadata

Backup_Display_Name: DataData

Storage_Path: /datadata

Current_File_System: yaffs2

Fstab_File_System: yaffs2

MTD_Name: datadata

Backup_Method: files

/sdcard | /dev/block/mmcblk0p1 | Size: 5918MB Used: 3006MB Free: 2912MB Backup Size: 0MB

Flags: Can_Be_Mounted Can_Be_Wiped Can_Be_Backed_Up Wipe_Available_in_GUI IsPresent Has_Android_Secure Is_Storage Is_Settings_Storage

Symlink_Path: /sdcard/.android_secure

Symlink_Mount_Point: /and-sec

Primary_Block_Device: /dev/block/mmcblk0p1

Display_Name: sdcard

Storage_Name: sdcard

Backup_Path: /and-sec

Backup_Name: and-sec

Backup_Display_Name: Android Secure

Storage_Path: /sdcard

Current_File_System: vfat

Fstab_File_System: vfat

Backup_Method: files

/system | /dev/mapper/lvpool-system | Size: 0MB Used: 0MB Free: 0MB Backup Size: 0MB

Flags: Can_Be_Mounted Can_Be_Wiped Can_Be_Backed_Up Wipe_Available_in_GUI IsPresent

Primary_Block_Device: /dev/mapper/lvpool-system

Display_Name: System

Storage_Name: System

Backup_Path: /system

Backup_Name: system

Backup_Display_Name: System

Storage_Path: /system

Current_File_System: ext4

Fstab_File_System: ext4

Backup_Method: files

/emmc | | Size: 0MB Used: 0MB Free: 0MB Backup Size: 0MB

Flags: Can_Be_Mounted Can_Be_Wiped Wipe_Available_in_GUI Removable Is_Storage

Primary_Block_Device: /dev/block/mmcblk1p1

Display_Name: emmc

Storage_Name: emmc

Backup_Path: /emmc

Backup_Name: emmc

Backup_Display_Name: emmc

Storage_Path: /emmc

Current_File_System: vfat

Fstab_File_System: vfat

Backup_Method: files

I:Loading package: TWRP (/script/ui.xml)

I:Loading package: TWRP (/sdcard/TWRP/theme/ui.zip)

I:Loading package: TWRP (/res/ui.xml)

I:Loading resources...

I:Loading variables...

I:Loading pages...

I:Loading page main

I:Loading page main2

I:Loading page install

I:Loading page flash_confirm

I:Loading page flash_zip

I:Loading page flash_done

I:Loading page clear_vars

I:Loading page confirm_action

I:Loading page action_page

I:Loading page singleaction_page

I:Loading page action_complete

I:Loading page filecheck

I:Loading page rebootcheck

I:Loading page wipe

I:Loading page advancedwipe

I:Loading page formatdata

I:Loading page formatdata_confirm

I:Loading page backup

I:Loading page backupname1

I:Loading page backupname2

I:Loading page backup_run

I:Loading page restore

I:Loading page restore_select

I:Loading page renamebackup

I:Loading page restore_run

I:Loading page selectstorage

I:Loading page mount

I:Loading page usb_mount

I:Loading page usb_umount

I:Loading page reboot

I:Loading page settings

I:Loading page timezone

I:Loading page screen

I:Loading page advanced

I:Loading page appselect

I:Loading page apprun

I:Loading page partsdcard

I:Loading page htcdumlock

I:Loading page lock

I:Loading page filemanagerlist

I:Loading page filemanageroptions

I:Loading page choosedestinationfolder

I:Loading page filemanagerrenamefile

I:Loading page filemanagerrenamefolder

I:Loading page filemanagerchmod

I:Loading page filemanagerconfirm

I:Loading page filemanageracction

I:Loading page decrypt

I:Loading page trydecrypt

I:Loading page terminalfolder

I:Loading page terminalcommand

I:Loading page sideload

I:Loading page installsu

I:Loading page fixsu

I:Set page: 'clear_vars'

I:Set page: 'main2'

I:Switching packages (TWRP)

E:Cannot load volume /misc!

E:Cannot load volume /misc!

Startup Commands: I:Copying file /cache/recovery/log to /cache/recovery/last_log

I:Attempt to load settings from settings file...

I:Loading settings from '/sdcard/TWRP/.twrps'.

I:Backup folder set to '/sdcard/TWRP/BACKUPS/323510E0CC2B00EC'

I:Version number saved to '/cache/recovery/.version'

I:Unable to mount '/emmc'

I:Actual block device: '', current file system: 'vfat'

I:Switching packages (TWRP)

I:Set page: 'reboot'

I:Set page: 'rebootcheck'

I:Set page: 'confirm_action'

I:Set page: 'clear_vars'

I:Set page: 'reboot'

I:Set page: 'rebootcheck'

I:Set page: 'confirm_action'

I:Set page: 'clear_vars'

I:Set page: 'reboot'

I:Set page: 'main'

I:Set page: 'clear_vars'

I:Set page: 'main2'