Home » Archimedes archive » Acorn User » AU 1996-03 B.adf » Features » Fsck_130/!QuickFix

Fsck_130/!QuickFix

This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.

Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.

Tape/disk: Home » Archimedes archive » Acorn User » AU 1996-03 B.adf » Features
Filename: Fsck_130/!QuickFix
Read OK:
File size: 0D68 bytes
Load address: 0000
Exec address: 0000
File contents
If you have a broken disc and you just want to fix it as fast as possible
without reading all the fsck help files, this quick guide to the disc fix is
for you.

You just have to search for your problem in the 'Problems' list and then read
the corresponding solution in the 'Solutions' list. 
If something goes wrong during the fix you should read all the other docs to
search for more info and eventually contact the author.

After the fix, please read the "!SHAREWARE" file, it's important!

Remember that the programs 'fsck' and 'hardfix' can keep a logfile of what
they print on the screen: if something goes wrong, the logfile can help the
author to discover and fix the problem. To use the logfile option, add:
"-l <filename>"   (where <filename> is the name of the logfile to create)
to the 'fsck' and 'hardfix' command line.

Before using 'fsck' or 'hardfix' you should save the disc data to a file
using:
"hardfix -s <savefilename> <discname>"
If something goes wrong during the fix you can always restore the map. See
the file 'hard_help' for more informations about how to restore a saved file
and why you should never do this!

In the examples below I assume that the broken disc is drive 4 on Filing
System ADFS (like the internal A5000 IDE): when you have to use the command,
change it to suit your configuration (eg. use IDEFS::5, SCSI::4, etc. instead
of ADFS::4).


Problems:
1) CheckMap reports "Map inconsistent with directory tree"
2) Some file cannot be loaded and deleted (the computer hangs)
3) A directory cannot be opened ("Broken directory" error)
4) Trying to create a new file on the disc causes a computer hang or some
   strange error.
5) The disc cannot be opened/accessed ("Disc not understood - has it been
   formatted?" error)   


Solutions:
1) Use 'fsck' on the disc, for example:
   "fsck -f ADFS::4"
   If it asks you to create a directory called 'lost+found', reply 'y'.
   When it finishes, look inside the 'lost+found' directory: load the files
   and check inside the directories to see if there is something useful for
   you. If you want to keep some of these files or directories, *copy* them to
   another directory and *delete* them from 'lost+found'.
   Then, try fsck again to see if the disc is fixed.

2) Use 'eliminate' on that file, for example:
   "eliminate ADFS::4.$.dir.file"
   If you are sure of what you are doing (ie. you are eliminating the right
   file!), reply 'y' to the question it asks you.
   Now run 'fsck' as described above in Solution 1 to fix the disc that
   should now be 'inconsistent'.
   
3) As in Solution 2, run 'eliminate' to remove the directory and then 'fsck'
   to fix the disc.
   
4) Use 'hardfix' on the disc, for example:
   "hardfix ADFS::4"
   It will show you what's wrong and will fix it. It should report problems
   about "free chunks linked list", "unresolved links" and "wrong checksums".
   Then it will ask you if you are sure to save the fixes to disc and you
   should answer 'y'. After the fix you should run 'hardfix' again to see if
   the problems were effectively corrected and eventually 'fsck' to see if
   the map is good:
   "fsck ADFS::4"
   Remember that 'hardfix' is a really dangerous program and so you should
   read the 'hard_help' file before trying to use it.

5) As in Solution 4, use 'hardfix' and then 'fsck'. In this case 'hardfix'
   should report problems about "corrupted maps" and "wrong checksums".
   
00000000  49 66 20 79 6f 75 20 68  61 76 65 20 61 20 62 72  |If you have a br|
00000010  6f 6b 65 6e 20 64 69 73  63 20 61 6e 64 20 79 6f  |oken disc and yo|
00000020  75 20 6a 75 73 74 20 77  61 6e 74 20 74 6f 20 66  |u just want to f|
00000030  69 78 20 69 74 20 61 73  20 66 61 73 74 20 61 73  |ix it as fast as|
00000040  20 70 6f 73 73 69 62 6c  65 0a 77 69 74 68 6f 75  | possible.withou|
00000050  74 20 72 65 61 64 69 6e  67 20 61 6c 6c 20 74 68  |t reading all th|
00000060  65 20 66 73 63 6b 20 68  65 6c 70 20 66 69 6c 65  |e fsck help file|
00000070  73 2c 20 74 68 69 73 20  71 75 69 63 6b 20 67 75  |s, this quick gu|
00000080  69 64 65 20 74 6f 20 74  68 65 20 64 69 73 63 20  |ide to the disc |
00000090  66 69 78 20 69 73 0a 66  6f 72 20 79 6f 75 2e 0a  |fix is.for you..|
000000a0  0a 59 6f 75 20 6a 75 73  74 20 68 61 76 65 20 74  |.You just have t|
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000000c0  72 20 70 72 6f 62 6c 65  6d 20 69 6e 20 74 68 65  |r problem in the|
000000d0  20 27 50 72 6f 62 6c 65  6d 73 27 20 6c 69 73 74  | 'Problems' list|
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000000f0  68 65 20 63 6f 72 72 65  73 70 6f 6e 64 69 6e 67  |he corresponding|
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00000140  6e 67 20 74 68 65 20 66  69 78 20 79 6f 75 20 73  |ng the fix you s|
00000150  68 6f 75 6c 64 20 72 65  61 64 20 61 6c 6c 20 74  |hould read all t|
00000160  68 65 20 6f 74 68 65 72  20 64 6f 63 73 20 74 6f  |he other docs to|
00000170  0a 73 65 61 72 63 68 20  66 6f 72 20 6d 6f 72 65  |.search for more|
00000180  20 69 6e 66 6f 20 61 6e  64 20 65 76 65 6e 74 75  | info and eventu|
00000190  61 6c 6c 79 20 63 6f 6e  74 61 63 74 20 74 68 65  |ally contact the|
000001a0  20 61 75 74 68 6f 72 2e  0a 0a 41 66 74 65 72 20  | author...After |
000001b0  74 68 65 20 66 69 78 2c  20 70 6c 65 61 73 65 20  |the fix, please |
000001c0  72 65 61 64 20 74 68 65  20 22 21 53 48 41 52 45  |read the "!SHARE|
000001d0  57 41 52 45 22 20 66 69  6c 65 2c 20 69 74 27 73  |WARE" file, it's|
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00000290  73 63 6f 76 65 72 20 61  6e 64 20 66 69 78 20 74  |scover and fix t|
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000002c0  70 74 69 6f 6e 2c 20 61  64 64 3a 0a 22 2d 6c 20  |ption, add:."-l |
000002d0  3c 66 69 6c 65 6e 61 6d  65 3e 22 20 20 20 28 77  |<filename>"   (w|
000002e0  68 65 72 65 20 3c 66 69  6c 65 6e 61 6d 65 3e 20  |here <filename> |
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00000310  65 61 74 65 29 0a 74 6f  20 74 68 65 20 27 66 73  |eate).to the 'fs|
00000320  63 6b 27 20 61 6e 64 20  27 68 61 72 64 66 69 78  |ck' and 'hardfix|
00000330  27 20 63 6f 6d 6d 61 6e  64 20 6c 69 6e 65 2e 0a  |' command line..|
00000340  0a 42 65 66 6f 72 65 20  75 73 69 6e 67 20 27 66  |.Before using 'f|
00000350  73 63 6b 27 20 6f 72 20  27 68 61 72 64 66 69 78  |sck' or 'hardfix|
00000360  27 20 79 6f 75 20 73 68  6f 75 6c 64 20 73 61 76  |' you should sav|
00000370  65 20 74 68 65 20 64 69  73 63 20 64 61 74 61 20  |e the disc data |
00000380  74 6f 20 61 20 66 69 6c  65 0a 75 73 69 6e 67 3a  |to a file.using:|
00000390  0a 22 68 61 72 64 66 69  78 20 2d 73 20 3c 73 61  |."hardfix -s <sa|
000003a0  76 65 66 69 6c 65 6e 61  6d 65 3e 20 3c 64 69 73  |vefilename> <dis|
000003b0  63 6e 61 6d 65 3e 22 0a  49 66 20 73 6f 6d 65 74  |cname>".If somet|
000003c0  68 69 6e 67 20 67 6f 65  73 20 77 72 6f 6e 67 20  |hing goes wrong |
000003d0  64 75 72 69 6e 67 20 74  68 65 20 66 69 78 20 79  |during the fix y|
000003e0  6f 75 20 63 61 6e 20 61  6c 77 61 79 73 20 72 65  |ou can always re|
000003f0  73 74 6f 72 65 20 74 68  65 20 6d 61 70 2e 20 53  |store the map. S|
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00000410  64 5f 68 65 6c 70 27 20  66 6f 72 20 6d 6f 72 65  |d_help' for more|
00000420  20 69 6e 66 6f 72 6d 61  74 69 6f 6e 73 20 61 62  | informations ab|
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00000450  61 6e 64 20 77 68 79 20  79 6f 75 20 73 68 6f 75  |and why you shou|
00000460  6c 64 20 6e 65 76 65 72  20 64 6f 20 74 68 69 73  |ld never do this|
00000470  21 0a 0a 49 6e 20 74 68  65 20 65 78 61 6d 70 6c  |!..In the exampl|
00000480  65 73 20 62 65 6c 6f 77  20 49 20 61 73 73 75 6d  |es below I assum|
00000490  65 20 74 68 61 74 20 74  68 65 20 62 72 6f 6b 65  |e that the broke|
000004a0  6e 20 64 69 73 63 20 69  73 20 64 72 69 76 65 20  |n disc is drive |
000004b0  34 20 6f 6e 20 46 69 6c  69 6e 67 0a 53 79 73 74  |4 on Filing.Syst|
000004c0  65 6d 20 41 44 46 53 20  28 6c 69 6b 65 20 74 68  |em ADFS (like th|
000004d0  65 20 69 6e 74 65 72 6e  61 6c 20 41 35 30 30 30  |e internal A5000|
000004e0  20 49 44 45 29 3a 20 77  68 65 6e 20 79 6f 75 20  | IDE): when you |
000004f0  68 61 76 65 20 74 6f 20  75 73 65 20 74 68 65 20  |have to use the |
00000500  63 6f 6d 6d 61 6e 64 2c  0a 63 68 61 6e 67 65 20  |command,.change |
00000510  69 74 20 74 6f 20 73 75  69 74 20 79 6f 75 72 20  |it to suit your |
00000520  63 6f 6e 66 69 67 75 72  61 74 69 6f 6e 20 28 65  |configuration (e|
00000530  67 2e 20 75 73 65 20 49  44 45 46 53 3a 3a 35 2c  |g. use IDEFS::5,|
00000540  20 53 43 53 49 3a 3a 34  2c 20 65 74 63 2e 20 69  | SCSI::4, etc. i|
00000550  6e 73 74 65 61 64 0a 6f  66 20 41 44 46 53 3a 3a  |nstead.of ADFS::|
00000560  34 29 2e 0a 0a 0a 50 72  6f 62 6c 65 6d 73 3a 0a  |4)....Problems:.|
00000570  31 29 20 43 68 65 63 6b  4d 61 70 20 72 65 70 6f  |1) CheckMap repo|
00000580  72 74 73 20 22 4d 61 70  20 69 6e 63 6f 6e 73 69  |rts "Map inconsi|
00000590  73 74 65 6e 74 20 77 69  74 68 20 64 69 72 65 63  |stent with direc|
000005a0  74 6f 72 79 20 74 72 65  65 22 0a 32 29 20 53 6f  |tory tree".2) So|
000005b0  6d 65 20 66 69 6c 65 20  63 61 6e 6e 6f 74 20 62  |me file cannot b|
000005c0  65 20 6c 6f 61 64 65 64  20 61 6e 64 20 64 65 6c  |e loaded and del|
000005d0  65 74 65 64 20 28 74 68  65 20 63 6f 6d 70 75 74  |eted (the comput|
000005e0  65 72 20 68 61 6e 67 73  29 0a 33 29 20 41 20 64  |er hangs).3) A d|
000005f0  69 72 65 63 74 6f 72 79  20 63 61 6e 6e 6f 74 20  |irectory cannot |
00000600  62 65 20 6f 70 65 6e 65  64 20 28 22 42 72 6f 6b  |be opened ("Brok|
00000610  65 6e 20 64 69 72 65 63  74 6f 72 79 22 20 65 72  |en directory" er|
00000620  72 6f 72 29 0a 34 29 20  54 72 79 69 6e 67 20 74  |ror).4) Trying t|
00000630  6f 20 63 72 65 61 74 65  20 61 20 6e 65 77 20 66  |o create a new f|
00000640  69 6c 65 20 6f 6e 20 74  68 65 20 64 69 73 63 20  |ile on the disc |
00000650  63 61 75 73 65 73 20 61  20 63 6f 6d 70 75 74 65  |causes a compute|
00000660  72 20 68 61 6e 67 20 6f  72 20 73 6f 6d 65 0a 20  |r hang or some. |
00000670  20 20 73 74 72 61 6e 67  65 20 65 72 72 6f 72 2e  |  strange error.|
00000680  0a 35 29 20 54 68 65 20  64 69 73 63 20 63 61 6e  |.5) The disc can|
00000690  6e 6f 74 20 62 65 20 6f  70 65 6e 65 64 2f 61 63  |not be opened/ac|
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000006d0  72 6d 61 74 74 65 64 3f  22 20 65 72 72 6f 72 29  |rmatted?" error)|
000006e0  20 20 20 0a 0a 0a 53 6f  6c 75 74 69 6f 6e 73 3a  |   ...Solutions:|
000006f0  0a 31 29 20 55 73 65 20  27 66 73 63 6b 27 20 6f  |.1) Use 'fsck' o|
00000700  6e 20 74 68 65 20 64 69  73 63 2c 20 66 6f 72 20  |n the disc, for |
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00000720  6b 20 2d 66 20 41 44 46  53 3a 3a 34 22 0a 20 20  |k -f ADFS::4".  |
00000730  20 49 66 20 69 74 20 61  73 6b 73 20 79 6f 75 20  | If it asks you |
00000740  74 6f 20 63 72 65 61 74  65 20 61 20 64 69 72 65  |to create a dire|
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000007a0  2b 66 6f 75 6e 64 27 20  64 69 72 65 63 74 6f 72  |+found' director|
000007b0  79 3a 20 6c 6f 61 64 20  74 68 65 20 66 69 6c 65  |y: load the file|
000007c0  73 0a 20 20 20 61 6e 64  20 63 68 65 63 6b 20 69  |s.   and check i|
000007d0  6e 73 69 64 65 20 74 68  65 20 64 69 72 65 63 74  |nside the direct|
000007e0  6f 72 69 65 73 20 74 6f  20 73 65 65 20 69 66 20  |ories to see if |
000007f0  74 68 65 72 65 20 69 73  20 73 6f 6d 65 74 68 69  |there is somethi|
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00000810  20 79 6f 75 2e 20 49 66  20 79 6f 75 20 77 61 6e  | you. If you wan|
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00000840  20 64 69 72 65 63 74 6f  72 69 65 73 2c 20 2a 63  | directories, *c|
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00000860  61 6e 6f 74 68 65 72 20  64 69 72 65 63 74 6f 72  |another director|
00000870  79 20 61 6e 64 20 2a 64  65 6c 65 74 65 2a 20 74  |y and *delete* t|
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00000890  6f 75 6e 64 27 2e 0a 20  20 20 54 68 65 6e 2c 20  |ound'..   Then, |
000008a0  74 72 79 20 66 73 63 6b  20 61 67 61 69 6e 20 74  |try fsck again t|
000008b0  6f 20 73 65 65 20 69 66  20 74 68 65 20 64 69 73  |o see if the dis|
000008c0  63 20 69 73 20 66 69 78  65 64 2e 0a 0a 32 29 20  |c is fixed...2) |
000008d0  55 73 65 20 27 65 6c 69  6d 69 6e 61 74 65 27 20  |Use 'eliminate' |
000008e0  6f 6e 20 74 68 61 74 20  66 69 6c 65 2c 20 66 6f  |on that file, fo|
000008f0  72 20 65 78 61 6d 70 6c  65 3a 0a 20 20 20 22 65  |r example:.   "e|
00000900  6c 69 6d 69 6e 61 74 65  20 41 44 46 53 3a 3a 34  |liminate ADFS::4|
00000910  2e 24 2e 64 69 72 2e 66  69 6c 65 22 0a 20 20 20  |.$.dir.file".   |
00000920  49 66 20 79 6f 75 20 61  72 65 20 73 75 72 65 20  |If you are sure |
00000930  6f 66 20 77 68 61 74 20  79 6f 75 20 61 72 65 20  |of what you are |
00000940  64 6f 69 6e 67 20 28 69  65 2e 20 79 6f 75 20 61  |doing (ie. you a|
00000950  72 65 20 65 6c 69 6d 69  6e 61 74 69 6e 67 20 74  |re eliminating t|
00000960  68 65 20 72 69 67 68 74  0a 20 20 20 66 69 6c 65  |he right.   file|
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00000980  20 74 68 65 20 71 75 65  73 74 69 6f 6e 20 69 74  | the question it|
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000009c0  69 6e 20 53 6f 6c 75 74  69 6f 6e 20 31 20 74 6f  |in Solution 1 to|
000009d0  20 66 69 78 20 74 68 65  20 64 69 73 63 20 74 68  | fix the disc th|
000009e0  61 74 0a 20 20 20 73 68  6f 75 6c 64 20 6e 6f 77  |at.   should now|
000009f0  20 62 65 20 27 69 6e 63  6f 6e 73 69 73 74 65 6e  | be 'inconsisten|
00000a00  74 27 2e 0a 20 20 20 0a  33 29 20 41 73 20 69 6e  |t'..   .3) As in|
00000a10  20 53 6f 6c 75 74 69 6f  6e 20 32 2c 20 72 75 6e  | Solution 2, run|
00000a20  20 27 65 6c 69 6d 69 6e  61 74 65 27 20 74 6f 20  | 'eliminate' to |
00000a30  72 65 6d 6f 76 65 20 74  68 65 20 64 69 72 65 63  |remove the direc|
00000a40  74 6f 72 79 20 61 6e 64  20 74 68 65 6e 20 27 66  |tory and then 'f|
00000a50  73 63 6b 27 0a 20 20 20  74 6f 20 66 69 78 20 74  |sck'.   to fix t|
00000a60  68 65 20 64 69 73 63 2e  0a 20 20 20 0a 34 29 20  |he disc..   .4) |
00000a70  55 73 65 20 27 68 61 72  64 66 69 78 27 20 6f 6e  |Use 'hardfix' on|
00000a80  20 74 68 65 20 64 69 73  63 2c 20 66 6f 72 20 65  | the disc, for e|
00000a90  78 61 6d 70 6c 65 3a 0a  20 20 20 22 68 61 72 64  |xample:.   "hard|
00000aa0  66 69 78 20 41 44 46 53  3a 3a 34 22 0a 20 20 20  |fix ADFS::4".   |
00000ab0  49 74 20 77 69 6c 6c 20  73 68 6f 77 20 79 6f 75  |It will show you|
00000ac0  20 77 68 61 74 27 73 20  77 72 6f 6e 67 20 61 6e  | what's wrong an|
00000ad0  64 20 77 69 6c 6c 20 66  69 78 20 69 74 2e 20 49  |d will fix it. I|
00000ae0  74 20 73 68 6f 75 6c 64  20 72 65 70 6f 72 74 20  |t should report |
00000af0  70 72 6f 62 6c 65 6d 73  0a 20 20 20 61 62 6f 75  |problems.   abou|
00000b00  74 20 22 66 72 65 65 20  63 68 75 6e 6b 73 20 6c  |t "free chunks l|
00000b10  69 6e 6b 65 64 20 6c 69  73 74 22 2c 20 22 75 6e  |inked list", "un|
00000b20  72 65 73 6f 6c 76 65 64  20 6c 69 6e 6b 73 22 20  |resolved links" |
00000b30  61 6e 64 20 22 77 72 6f  6e 67 20 63 68 65 63 6b  |and "wrong check|
00000b40  73 75 6d 73 22 2e 0a 20  20 20 54 68 65 6e 20 69  |sums"..   Then i|
00000b50  74 20 77 69 6c 6c 20 61  73 6b 20 79 6f 75 20 69  |t will ask you i|
00000b60  66 20 79 6f 75 20 61 72  65 20 73 75 72 65 20 74  |f you are sure t|
00000b70  6f 20 73 61 76 65 20 74  68 65 20 66 69 78 65 73  |o save the fixes|
00000b80  20 74 6f 20 64 69 73 63  20 61 6e 64 20 79 6f 75  | to disc and you|
00000b90  0a 20 20 20 73 68 6f 75  6c 64 20 61 6e 73 77 65  |.   should answe|
00000ba0  72 20 27 79 27 2e 20 41  66 74 65 72 20 74 68 65  |r 'y'. After the|
00000bb0  20 66 69 78 20 79 6f 75  20 73 68 6f 75 6c 64 20  | fix you should |
00000bc0  72 75 6e 20 27 68 61 72  64 66 69 78 27 20 61 67  |run 'hardfix' ag|
00000bd0  61 69 6e 20 74 6f 20 73  65 65 20 69 66 0a 20 20  |ain to see if.  |
00000be0  20 74 68 65 20 70 72 6f  62 6c 65 6d 73 20 77 65  | the problems we|
00000bf0  72 65 20 65 66 66 65 63  74 69 76 65 6c 79 20 63  |re effectively c|
00000c00  6f 72 72 65 63 74 65 64  20 61 6e 64 20 65 76 65  |orrected and eve|
00000c10  6e 74 75 61 6c 6c 79 20  27 66 73 63 6b 27 20 74  |ntually 'fsck' t|
00000c20  6f 20 73 65 65 20 69 66  0a 20 20 20 74 68 65 20  |o see if.   the |
00000c30  6d 61 70 20 69 73 20 67  6f 6f 64 3a 0a 20 20 20  |map is good:.   |
00000c40  22 66 73 63 6b 20 41 44  46 53 3a 3a 34 22 0a 20  |"fsck ADFS::4". |
00000c50  20 20 52 65 6d 65 6d 62  65 72 20 74 68 61 74 20  |  Remember that |
00000c60  27 68 61 72 64 66 69 78  27 20 69 73 20 61 20 72  |'hardfix' is a r|
00000c70  65 61 6c 6c 79 20 64 61  6e 67 65 72 6f 75 73 20  |eally dangerous |
00000c80  70 72 6f 67 72 61 6d 20  61 6e 64 20 73 6f 20 79  |program and so y|
00000c90  6f 75 20 73 68 6f 75 6c  64 0a 20 20 20 72 65 61  |ou should.   rea|
00000ca0  64 20 74 68 65 20 27 68  61 72 64 5f 68 65 6c 70  |d the 'hard_help|
00000cb0  27 20 66 69 6c 65 20 62  65 66 6f 72 65 20 74 72  |' file before tr|
00000cc0  79 69 6e 67 20 74 6f 20  75 73 65 20 69 74 2e 0a  |ying to use it..|
00000cd0  0a 35 29 20 41 73 20 69  6e 20 53 6f 6c 75 74 69  |.5) As in Soluti|
00000ce0  6f 6e 20 34 2c 20 75 73  65 20 27 68 61 72 64 66  |on 4, use 'hardf|
00000cf0  69 78 27 20 61 6e 64 20  74 68 65 6e 20 27 66 73  |ix' and then 'fs|
00000d00  63 6b 27 2e 20 49 6e 20  74 68 69 73 20 63 61 73  |ck'. In this cas|
00000d10  65 20 27 68 61 72 64 66  69 78 27 0a 20 20 20 73  |e 'hardfix'.   s|
00000d20  68 6f 75 6c 64 20 72 65  70 6f 72 74 20 70 72 6f  |hould report pro|
00000d30  62 6c 65 6d 73 20 61 62  6f 75 74 20 22 63 6f 72  |blems about "cor|
00000d40  72 75 70 74 65 64 20 6d  61 70 73 22 20 61 6e 64  |rupted maps" and|
00000d50  20 22 77 72 6f 6e 67 20  63 68 65 63 6b 73 75 6d  | "wrong checksum|
00000d60  73 22 2e 0a 20 20 20 0a                           |s"..   .|
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