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      1 // parttypes.cc
      2 // Class to manage partition type codes -- a slight variant on MBR type
      3 // codes, GUID type codes, and associated names.
      4 
      5 /* This program is copyright (c) 2009-2014 by Roderick W. Smith. It is distributed
      6   under the terms of the GNU GPL version 2, as detailed in the COPYING file. */
      7 
      8 #define __STDC_LIMIT_MACROS
      9 #define __STDC_CONSTANT_MACROS
     10 
     11 #include <string.h>
     12 #include <stdint.h>
     13 #include <stdio.h>
     14 #include <iostream>
     15 #include "parttypes.h"
     16 
     17 using namespace std;
     18 
     19 int PartType::numInstances = 0;
     20 AType* PartType::allTypes = NULL;
     21 AType* PartType::lastType = NULL;
     22 
     23 // Constructor. Its main task is to initialize the data list, but only
     24 // if this is the first instance, since it's a static linked list.
     25 // Partition type codes are MBR type codes multiplied by 0x0100, with
     26 // additional related codes taking on following numbers. For instance,
     27 // the FreeBSD disklabel code in MBR is 0xa5; here, it's 0xa500, with
     28 // additional FreeBSD codes being 0xa501, 0xa502, and so on. This gives
     29 // related codes similar numbers and (given appropriate entry positions
     30 // in the linked list) keeps them together in the listings generated
     31 // by typing "L" at the main gdisk menu.
     32 PartType::PartType(void) : GUIDData() {
     33    numInstances++;
     34    if (numInstances == 1) {
     35       AddAllTypes();
     36    } // if
     37 } // default constructor
     38 
     39 PartType::PartType(const PartType & orig) : GUIDData(orig) {
     40    numInstances++;
     41    if (numInstances == 1) { // should never happen; just being paranoid
     42       AddAllTypes();
     43    } // if
     44 } // PartType copy constructor
     45 
     46 PartType::PartType(const GUIDData & orig) : GUIDData(orig) {
     47    numInstances++;
     48    if (numInstances == 1) {
     49       AddAllTypes();
     50    } // if
     51 } // PartType copy constructor
     52 
     53 PartType::~PartType(void) {
     54    AType* tempType;
     55 
     56    numInstances--;
     57    if (numInstances == 0) {
     58       while (allTypes != NULL) {
     59          tempType = allTypes;
     60          allTypes = allTypes->next;
     61          delete tempType;
     62       } // while
     63    } // if
     64 } // destructor
     65 
     66 // Add all partition type codes to the internal linked-list structure.
     67 // Used by constructors.
     68 // See http://www.win.tue.nl/~aeb/partitions/partition_types-1.html
     69 // for a list of MBR partition type codes.
     70 void PartType::AddAllTypes(void) {
     71    // Start with the "unused entry," which should normally appear only
     72    // on empty partition table entries....
     73    AddType(0x0000, "00000000-0000-0000-0000-000000000000", "Unused entry", 0);
     74 
     75    // DOS/Windows partition types, most of which are hidden from the "L" listing
     76    // (they're available mainly for MBR-to-GPT conversions).
     77    AddType(0x0100, "EBD0A0A2-B9E5-4433-87C0-68B6B72699C7", "Microsoft basic data", 0); // FAT-12
     78    AddType(0x0400, "EBD0A0A2-B9E5-4433-87C0-68B6B72699C7", "Microsoft basic data", 0); // FAT-16 < 32M
     79    AddType(0x0600, "EBD0A0A2-B9E5-4433-87C0-68B6B72699C7", "Microsoft basic data", 0); // FAT-16
     80    AddType(0x0700, "EBD0A0A2-B9E5-4433-87C0-68B6B72699C7", "Microsoft basic data", 1); // NTFS (or HPFS)
     81    AddType(0x0b00, "EBD0A0A2-B9E5-4433-87C0-68B6B72699C7", "Microsoft basic data", 0); // FAT-32
     82    AddType(0x0c00, "EBD0A0A2-B9E5-4433-87C0-68B6B72699C7", "Microsoft basic data", 0); // FAT-32 LBA
     83    AddType(0x0c01, "E3C9E316-0B5C-4DB8-817D-F92DF00215AE", "Microsoft reserved");
     84    AddType(0x0e00, "EBD0A0A2-B9E5-4433-87C0-68B6B72699C7", "Microsoft basic data", 0); // FAT-16 LBA
     85    AddType(0x1100, "EBD0A0A2-B9E5-4433-87C0-68B6B72699C7", "Microsoft basic data", 0); // Hidden FAT-12
     86    AddType(0x1400, "EBD0A0A2-B9E5-4433-87C0-68B6B72699C7", "Microsoft basic data", 0); // Hidden FAT-16 < 32M
     87    AddType(0x1600, "EBD0A0A2-B9E5-4433-87C0-68B6B72699C7", "Microsoft basic data", 0); // Hidden FAT-16
     88    AddType(0x1700, "EBD0A0A2-B9E5-4433-87C0-68B6B72699C7", "Microsoft basic data", 0); // Hidden NTFS (or HPFS)
     89    AddType(0x1b00, "EBD0A0A2-B9E5-4433-87C0-68B6B72699C7", "Microsoft basic data", 0); // Hidden FAT-32
     90    AddType(0x1c00, "EBD0A0A2-B9E5-4433-87C0-68B6B72699C7", "Microsoft basic data", 0); // Hidden FAT-32 LBA
     91    AddType(0x1e00, "EBD0A0A2-B9E5-4433-87C0-68B6B72699C7", "Microsoft basic data", 0); // Hidden FAT-16 LBA
     92    AddType(0x2700, "DE94BBA4-06D1-4D40-A16A-BFD50179D6AC", "Windows RE");
     93 
     94    // Open Network Install Environment (ONIE) specific types.
     95    // See http://www.onie.org/ and
     96    // https://github.com/onie/onie/blob/master/rootconf/x86_64/sysroot-lib-onie/onie-blkdev-common
     97    AddType(0x3000, "7412F7D5-A156-4B13-81DC-867174929325", "ONIE boot");
     98    AddType(0x3001, "D4E6E2CD-4469-46F3-B5CB-1BFF57AFC149", "ONIE config");
     99 
    100    // PowerPC reference platform boot partition
    101    AddType(0x4100, "9E1A2D38-C612-4316-AA26-8B49521E5A8B", "PowerPC PReP boot");
    102 
    103    // Windows LDM ("dynamic disk") types
    104    AddType(0x4200, "AF9B60A0-1431-4F62-BC68-3311714A69AD", "Windows LDM data"); // Logical disk manager
    105    AddType(0x4201, "5808C8AA-7E8F-42E0-85D2-E1E90434CFB3", "Windows LDM metadata"); // Logical disk manager
    106 
    107    // An oddball IBM filesystem....
    108    AddType(0x7501, "37AFFC90-EF7D-4E96-91C3-2D7AE055B174", "IBM GPFS"); // General Parallel File System (GPFS)
    109 
    110    // ChromeOS-specific partition types...
    111    // Values taken from vboot_reference/firmware/lib/cgptlib/include/gpt.h in
    112    // ChromeOS source code, retrieved 12/23/2010. They're also at
    113    // http://www.chromium.org/chromium-os/chromiumos-design-docs/disk-format.
    114    // These have no MBR equivalents, AFAIK, so I'm using 0x7Fxx values, since they're close
    115    // to the Linux values.
    116    AddType(0x7f00, "FE3A2A5D-4F32-41A7-B725-ACCC3285A309", "ChromeOS kernel");
    117    AddType(0x7f01, "3CB8E202-3B7E-47DD-8A3C-7FF2A13CFCEC", "ChromeOS root");
    118    AddType(0x7f02, "2E0A753D-9E48-43B0-8337-B15192CB1B5E", "ChromeOS reserved");
    119 
    120    // Linux-specific partition types....
    121    AddType(0x8200, "0657FD6D-A4AB-43C4-84E5-0933C84B4F4F", "Linux swap"); // Linux swap (or Solaris on MBR)
    122    AddType(0x8300, "0FC63DAF-8483-4772-8E79-3D69D8477DE4", "Linux filesystem"); // Linux native
    123    AddType(0x8301, "8DA63339-0007-60C0-C436-083AC8230908", "Linux reserved");
    124    // See http://www.freedesktop.org/software/systemd/man/systemd-gpt-auto-generator.html
    125    // and http://www.freedesktop.org/wiki/Specifications/DiscoverablePartitionsSpec/
    126    AddType(0x8302, "933AC7E1-2EB4-4F13-B844-0E14E2AEF915", "Linux /home"); // Linux /home (auto-mounted by systemd)
    127    AddType(0x8303, "44479540-F297-41B2-9AF7-D131D5F0458A", "Linux x86 root (/)"); // Linux / on x86 (auto-mounted by systemd)
    128    AddType(0x8304, "4F68BCE3-E8CD-4DB1-96E7-FBCAF984B709", "Linux x86-64 root (/)"); // Linux / on x86-64 (auto-mounted by systemd)
    129    AddType(0x8305, "B921B045-1DF0-41C3-AF44-4C6F280D3FAE", "Linux ARM64 root (/)"); // Linux / on 64-bit ARM (auto-mounted by systemd)
    130    AddType(0x8306, "3B8F8425-20E0-4F3B-907F-1A25A76F98E8", "Linux /srv"); // Linux /srv (auto-mounted by systemd)
    131 
    132    // Used by Intel Rapid Start technology
    133    AddType(0x8400, "D3BFE2DE-3DAF-11DF-BA40-E3A556D89593", "Intel Rapid Start");
    134 
    135    // Another Linux type code....
    136    AddType(0x8e00, "E6D6D379-F507-44C2-A23C-238F2A3DF928", "Linux LVM");
    137 
    138    // FreeBSD partition types....
    139    // Note: Rather than extract FreeBSD disklabel data, convert FreeBSD
    140    // partitions in-place, and let FreeBSD sort out the details....
    141    AddType(0xa500, "516E7CB4-6ECF-11D6-8FF8-00022D09712B", "FreeBSD disklabel");
    142    AddType(0xa501, "83BD6B9D-7F41-11DC-BE0B-001560B84F0F", "FreeBSD boot");
    143    AddType(0xa502, "516E7CB5-6ECF-11D6-8FF8-00022D09712B", "FreeBSD swap");
    144    AddType(0xa503, "516E7CB6-6ECF-11D6-8FF8-00022D09712B", "FreeBSD UFS");
    145    AddType(0xa504, "516E7CBA-6ECF-11D6-8FF8-00022D09712B", "FreeBSD ZFS");
    146    AddType(0xa505, "516E7CB8-6ECF-11D6-8FF8-00022D09712B", "FreeBSD Vinum/RAID");
    147 
    148    // Midnight BSD partition types....
    149    AddType(0xa580, "85D5E45A-237C-11E1-B4B3-E89A8F7FC3A7", "Midnight BSD data");
    150    AddType(0xa581, "85D5E45E-237C-11E1-B4B3-E89A8F7FC3A7", "Midnight BSD boot");
    151    AddType(0xa582, "85D5E45B-237C-11E1-B4B3-E89A8F7FC3A7", "Midnight BSD swap");
    152    AddType(0xa583, "0394Ef8B-237E-11E1-B4B3-E89A8F7FC3A7", "Midnight BSD UFS");
    153    AddType(0xa584, "85D5E45D-237C-11E1-B4B3-E89A8F7FC3A7", "Midnight BSD ZFS");
    154    AddType(0xa585, "85D5E45C-237C-11E1-B4B3-E89A8F7FC3A7", "Midnight BSD Vinum");
    155 
    156    // A MacOS partition type, separated from others by NetBSD partition types...
    157    AddType(0xa800, "55465300-0000-11AA-AA11-00306543ECAC", "Apple UFS"); // Mac OS X
    158 
    159    // NetBSD partition types. Note that the main entry sets it up as a
    160    // FreeBSD disklabel. I'm not 100% certain this is the correct behavior.
    161    AddType(0xa900, "516E7CB4-6ECF-11D6-8FF8-00022D09712B", "FreeBSD disklabel", 0); // NetBSD disklabel
    162    AddType(0xa901, "49F48D32-B10E-11DC-B99B-0019D1879648", "NetBSD swap");
    163    AddType(0xa902, "49F48D5A-B10E-11DC-B99B-0019D1879648", "NetBSD FFS");
    164    AddType(0xa903, "49F48D82-B10E-11DC-B99B-0019D1879648", "NetBSD LFS");
    165    AddType(0xa904, "2DB519C4-B10F-11DC-B99B-0019D1879648", "NetBSD concatenated");
    166    AddType(0xa905, "2DB519EC-B10F-11DC-B99B-0019D1879648", "NetBSD encrypted");
    167    AddType(0xa906, "49F48DAA-B10E-11DC-B99B-0019D1879648", "NetBSD RAID");
    168 
    169    // Mac OS partition types (See also 0xa800, above)....
    170    AddType(0xab00, "426F6F74-0000-11AA-AA11-00306543ECAC", "Apple boot");
    171    AddType(0xaf00, "48465300-0000-11AA-AA11-00306543ECAC", "Apple HFS/HFS+");
    172    AddType(0xaf01, "52414944-0000-11AA-AA11-00306543ECAC", "Apple RAID");
    173    AddType(0xaf02, "52414944-5F4F-11AA-AA11-00306543ECAC", "Apple RAID offline");
    174    AddType(0xaf03, "4C616265-6C00-11AA-AA11-00306543ECAC", "Apple label");
    175    AddType(0xaf04, "5265636F-7665-11AA-AA11-00306543ECAC", "AppleTV recovery");
    176    AddType(0xaf05, "53746F72-6167-11AA-AA11-00306543ECAC", "Apple Core Storage");
    177 
    178    // Solaris partition types (one of which is shared with MacOS)
    179    AddType(0xbe00, "6A82CB45-1DD2-11B2-99A6-080020736631", "Solaris boot");
    180    AddType(0xbf00, "6A85CF4D-1DD2-11B2-99A6-080020736631", "Solaris root");
    181    AddType(0xbf01, "6A898CC3-1DD2-11B2-99A6-080020736631", "Solaris /usr & Mac ZFS"); // Solaris/MacOS
    182    AddType(0xbf02, "6A87C46F-1DD2-11B2-99A6-080020736631", "Solaris swap");
    183    AddType(0xbf03, "6A8B642B-1DD2-11B2-99A6-080020736631", "Solaris backup");
    184    AddType(0xbf04, "6A8EF2E9-1DD2-11B2-99A6-080020736631", "Solaris /var");
    185    AddType(0xbf05, "6A90BA39-1DD2-11B2-99A6-080020736631", "Solaris /home");
    186    AddType(0xbf06, "6A9283A5-1DD2-11B2-99A6-080020736631", "Solaris alternate sector");
    187    AddType(0xbf07, "6A945A3B-1DD2-11B2-99A6-080020736631", "Solaris Reserved 1");
    188    AddType(0xbf08, "6A9630D1-1DD2-11B2-99A6-080020736631", "Solaris Reserved 2");
    189    AddType(0xbf09, "6A980767-1DD2-11B2-99A6-080020736631", "Solaris Reserved 3");
    190    AddType(0xbf0a, "6A96237F-1DD2-11B2-99A6-080020736631", "Solaris Reserved 4");
    191    AddType(0xbf0b, "6A8D2AC7-1DD2-11B2-99A6-080020736631", "Solaris Reserved 5");
    192 
    193    // I can find no MBR equivalents for these, but they're on the
    194    // Wikipedia page for GPT, so here we go....
    195    AddType(0xc001, "75894C1E-3AEB-11D3-B7C1-7B03A0000000", "HP-UX data");
    196    AddType(0xc002, "E2A1E728-32E3-11D6-A682-7B03A0000000", "HP-UX service");
    197 
    198    // See http://www.freedesktop.org/wiki/Specifications/BootLoaderSpec
    199    AddType(0xea00, "BC13C2FF-59E6-4262-A352-B275FD6F7172", "Freedesktop $BOOT");
    200 
    201    // Type code for Haiku; uses BeOS MBR code as hex code base
    202    AddType(0xeb00, "42465331-3BA3-10F1-802A-4861696B7521", "Haiku BFS");
    203 
    204    // Manufacturer-specific ESP-like partitions (in order in which they were added)
    205    AddType(0xed00, "F4019732-066E-4E12-8273-346C5641494F", "Sony system partition");
    206    AddType(0xed01, "BFBFAFE7-A34F-448A-9A5B-6213EB736C22", "Lenovo system partition");
    207 
    208    // EFI system and related partitions
    209    AddType(0xef00, "C12A7328-F81F-11D2-BA4B-00A0C93EC93B", "EFI System"); // Parted identifies these as having the "boot flag" set
    210    AddType(0xef01, "024DEE41-33E7-11D3-9D69-0008C781F39F", "MBR partition scheme"); // Used to nest MBR in GPT
    211    AddType(0xef02, "21686148-6449-6E6F-744E-656564454649", "BIOS boot partition"); // Used by GRUB
    212 
    213    // Ceph type codes; see https://github.com/ceph/ceph/blob/9bcc42a3e6b08521694b5c0228b2c6ed7b3d312e/src/ceph-disk#L76-L81
    214    AddType(0xf800, "4FBD7E29-9D25-41B8-AFD0-062C0CEFF05D", "Ceph OSD"); // Ceph Object Storage Daemon
    215    AddType(0xf801, "4FBD7E29-9D25-41B8-AFD0-5EC00CEFF05D", "Ceph dm-crypt OSD"); // Ceph Object Storage Daemon (encrypted)
    216    AddType(0xf802, "BFBFAFE7-A34F-448A-9A5B-6213EB736C22", "Ceph journal");
    217    AddType(0xf803, "45B0969E-9B03-4F30-B4C6-5EC00CEFF106", "Ceph dm-crypt journal");
    218    AddType(0xf804, "89C57F98-2FE5-4DC0-89C1-F3AD0CEFF2BE", "Ceph disk in creation");
    219    AddType(0xf805, "89C57F98-2FE5-4DC0-89C1-5EC00CEFF2BE", "Ceph dm-crypt disk in creation");
    220 
    221    // VMWare ESX partition types codes
    222    AddType(0xfb00, "AA31E02A-400F-11DB-9590-000C2911D1B8", "VMWare VMFS");
    223    AddType(0xfb01, "9198EFFC-31C0-11DB-8F78-000C2911D1B8", "VMWare reserved");
    224    AddType(0xfc00, "9D275380-40AD-11DB-BF97-000C2911D1B8", "VMWare kcore crash protection");
    225 
    226    // A straggler Linux partition type....
    227    AddType(0xfd00, "A19D880F-05FC-4D3B-A006-743F0F84911E", "Linux RAID");
    228 
    229    // Note: DO NOT use the 0xffff code; that's reserved to indicate an
    230    // unknown GUID type code.
    231 } // PartType::AddAllTypes()
    232 
    233 // Add a single type to the linked list of types. Returns 1 if operation
    234 // succeeds, 0 otherwise.
    235 int PartType::AddType(uint16_t mbrType, const char * guidData, const char * name,
    236                       int toDisplay) {
    237    AType* tempType;
    238    int allOK = 1;
    239 
    240    tempType = new AType;
    241    if (tempType != NULL) {
    242       tempType->MBRType = mbrType;
    243       tempType->GUIDType = guidData;
    244       tempType->name = name;
    245       tempType->display = toDisplay;
    246       tempType->next = NULL;
    247       if (allTypes == NULL) { // first entry
    248          allTypes = tempType;
    249       } else {
    250          lastType->next = tempType;
    251       } // if/else
    252       lastType = tempType;
    253    } else {
    254       cerr << "Unable to allocate memory in PartType::AddType()! Partition type list will\n";
    255       cerr << "be incomplete!\n";
    256       allOK = 0;
    257    } // if/else
    258    return allOK;
    259 } // GUID::AddType(const char* variant)
    260 
    261 // Assignment operator by string. If the original string is short,
    262 // interpret it as a gdisk hex code; if it's longer, interpret it as
    263 // a direct entry of a GUID value. If a short string isn't a hex
    264 // number, do nothing.
    265 PartType & PartType::operator=(const string & orig) {
    266    uint32_t hexCode;
    267 
    268    if (orig.length() < 32) {
    269       if (IsHex(orig)) {
    270          sscanf(orig.c_str(), "%x", &hexCode);
    271          *this = hexCode;
    272       }
    273    } else {
    274       GUIDData::operator=(orig);
    275    } // if/else hexCode or GUID
    276    return *this;
    277 } // PartType::operator=(const char * orig)
    278 
    279 // Assignment from C-style string; rely on C++ casting....
    280 PartType & PartType::operator=(const char * orig) {
    281    return operator=((string) orig);
    282 } // PartType::operator=(const char * orig)
    283 
    284 // Assign a GUID based on my custom 2-byte (16-bit) MBR hex ID variant
    285 PartType & PartType::operator=(uint16_t ID) {
    286    AType* theItem = allTypes;
    287    int found = 0;
    288 
    289    // Now search the type list for a match to the ID....
    290    while ((theItem != NULL) && (!found)) {
    291       if (theItem->MBRType == ID)  {
    292          GUIDData::operator=(theItem->GUIDType);
    293          found = 1;
    294       } else {
    295          theItem = theItem->next;
    296       } // if/else
    297    } // while
    298    if (!found) {
    299       // Assign a default value....
    300       operator=(DEFAULT_GPT_TYPE);
    301       cout.setf(ios::uppercase);
    302       cout.fill('0');
    303       cout << "Exact type match not found for type code ";
    304       cout.width(4);
    305       cout << hex << ID << "; assigning type code for\n'" << TypeName() << "'\n" << dec;
    306       cout.fill(' ');
    307    } // if (!found)
    308    return *this;
    309 } // PartType::operator=(uint16_t ID)
    310 
    311 // Return the English description of the partition type (e.g., "Linux filesystem")
    312 string PartType::TypeName(void) const {
    313    AType* theItem = allTypes;
    314    int found = 0;
    315    string typeName;
    316 
    317    while ((theItem != NULL) && (!found)) {
    318       if (theItem->GUIDType == *this) { // found it!
    319          typeName = theItem->name;
    320          found = 1;
    321       } else {
    322          theItem = theItem->next;
    323       } // if/else
    324    } // while
    325    if (!found) {
    326       typeName = "Unknown";
    327    } // if (!found)
    328    return typeName;
    329 } // PartType::TypeName()
    330 
    331 #ifdef USE_UTF16
    332 // Return the Unicode description of the partition type (e.g., "Linux filesystem")
    333 UnicodeString PartType::UTypeName(void) const {
    334    AType* theItem = allTypes;
    335    int found = 0;
    336    UnicodeString typeName;
    337 
    338    while ((theItem != NULL) && (!found)) {
    339       if (theItem->GUIDType == *this) { // found it!
    340          typeName = theItem->name.c_str();
    341          found = 1;
    342       } else {
    343          theItem = theItem->next;
    344       } // if/else
    345    } // while
    346    if (!found) {
    347       typeName = "Unknown";
    348    } // if (!found)
    349    return typeName;
    350 } // PartType::TypeName()
    351 #endif
    352 
    353 // Return the custom GPT fdisk 2-byte (16-bit) hex code for this GUID partition type
    354 // Note that this function ignores entries for which the display variable
    355 // is set to 0. This enables control of which values get returned when
    356 // there are multiple possibilities, but opens the algorithm up to the
    357 // potential for problems should the data in the list be bad.
    358 uint16_t PartType::GetHexType() const {
    359    AType* theItem = allTypes;
    360    int found = 0;
    361    uint16_t theID = 0xFFFF;
    362 
    363    while ((theItem != NULL) && (!found)) {
    364       if ((theItem->GUIDType == *this) && (theItem->display == 1)) { // found it!
    365          theID = theItem->MBRType;
    366          found = 1;
    367       } else {
    368          theItem = theItem->next;
    369       } // if/else
    370    } // while
    371    if (!found) {
    372       theID = 0xFFFF;
    373    } // if (!found)
    374    return theID;
    375 } // PartType::GetHex()
    376 
    377 // Displays the available types and my extended MBR codes for same....
    378 // Note: This function assumes an 80-column display. On wider displays,
    379 // it stops at under 80 columns; on narrower displays, lines will wrap
    380 // in an ugly way. The maxLines value is the maximum number of lines
    381 // to display before prompting to continue, or 0 (or a negative value)
    382 // for no limit.
    383 void PartType::ShowAllTypes(int maxLines) const {
    384    int colCount = 1, lineCount = 1;
    385    size_t i;
    386    AType* thisType = allTypes;
    387    string line;
    388 
    389    cout.unsetf(ios::uppercase);
    390    while (thisType != NULL) {
    391       if (thisType->display == 1) { // show it
    392          cout.fill('0');
    393          cout.width(4);
    394          cout << hex << thisType->MBRType << " ";
    395          cout << thisType->name.substr(0, 20);
    396          for (i = 0; i < (20 - (thisType->name.substr(0, 20).length())); i++)
    397             cout << " ";
    398          if ((colCount % 3) == 0) {
    399             if (thisType->next) {
    400                cout << "\n";
    401                if ((maxLines > 0) && (lineCount++ % maxLines) == 0) {
    402                   cout << "Press the <Enter> key to see more codes: ";
    403                   getline(cin, line);
    404                } // if reached screen line limit
    405             } // if there's another entry following this one
    406          } else {
    407             cout << "  ";
    408          }
    409          colCount++;
    410       } // if
    411       thisType = thisType->next;
    412    } // while
    413    cout.fill(' ');
    414    cout << "\n" << dec;
    415 } // PartType::ShowAllTypes(int maxLines)
    416 
    417 // Returns 1 if code is a valid extended MBR code, 0 if it's not
    418 int PartType::Valid(uint16_t code) const {
    419    AType* thisType = allTypes;
    420    int found = 0;
    421 
    422    while ((thisType != NULL) && (!found)) {
    423       if (thisType->MBRType == code) {
    424          found = 1;
    425       } // if
    426       thisType = thisType->next;
    427    } // while
    428    return found;
    429 } // PartType::Valid()
    430