Unpartitioning.

Hello, I was installing Windows XP via Boot Camp (2009 MacBook Pro), then through the process It said there was a disc error so I decided to not continue. I had set aside 20 Gigs for this - is there anyway to get that 20 gigs back, without wiping my entire drive? Please help, thanks.

Volcoman wrote:
Thank you! This could possibly be a first step to deleting the windows partition, but where it says "If you installed Windows on a single-volume disk [which I did, I have one 500 gig internal hard drive], use Disk Utility (located in the Utilities folder in the Applications folder) to erase the disk and reformat it as a Mac OS X volume." How would I go about doing that? Sorry, although I've had my Mac for a few years now I still don't know the deep roots of how the system operates.
You can try in Disk Utility while booted normally, but iirc, no go.
There are partition utility apps, but to me they're not worth the money. I'd suggest getting a new external HD with that money, then after you're finished you have more external storage, instead of an app in the junk drawer.
What I would do is clone (CarbonCopyCloner or SuperDuper!) to an external HD, erase, zero, format, partition the internal HD, then clone back.

Similar Messages

  • Do partition scans take longer than a full table scan on an unpartitioned table?

    Hello there,
    I have a range-partitioned table PART_TABLE which has 10 Million records and 10 partitions having 1 million records each. Partition is done based on a Column named ID which is a sequence from 1 to 10 million.
    I created another table P2_BKP (doing a select * from part_table) which has the same dataset as that of PART_TABLE except that this table is not partitioned.
    Now, I run a same query on both the tables to retrieve a range of data. Precisely I am trying to read only the data present in 5 partitions of the partitioned tables which theoretically requires less reads than when done on unpartitioned tables.
    Yet, the query seems to take extra time on partitioned table than when run on unpartitioned table.Any specific reason why is this the case?
    Below is the query I am trying to run on both the tables and their corresponding Explain Plans.
    QUERY A
    =========
    select * from P2_BKP where id<5000000;
    | Id  | Operation         | Name   | Rows  | Bytes | Cost (%CPU)| Time     |                                                                                                                                                                                                                                
    |   0 | SELECT STATEMENT  |        |  6573K|   720M| 12152   (2)| 00:02:26 |                                                                                                                                                                                                                                
    |*  1 |  TABLE ACCESS FULL| P2_BKP |  6573K|   720M| 12152   (2)| 00:02:26 |                                                                                                                                                                                                                                
    QUERY B
    ========
    select * from part_table where id<5000000;
    | Id  | Operation                | Name       | Rows  | Bytes | Cost (%CPU)| Time     | Pstart| Pstop |                                                                                                                                                                                                     
    |   0 | SELECT STATEMENT         |            |  3983K|   436M| 22181  (73)| 00:04:27 |       |       |                                                                                                                                                                                                     
    |   1 |  PARTITION RANGE ITERATOR|            |  3983K|   436M| 22181  (73)| 00:04:27 |     1 |     5 |                                                                                                                                                                                                     
    |*  2 |   TABLE ACCESS FULL      | PART_TABLE |  3983K|   436M| 22181  (73)| 00:04:27 |     1 |     5 |                                                                                                                                                                                                     

    at the risk of bringing unnecessary confusion into the discussion: I think there is a situation in 11g in which a Full Table Scan on a non partitioned table can be faster than the FTS on a corresponding partitioned table: if the size of the non partitioned table reaches a certain threshold (I think it's: blocks > _small_table_threshold * 5) the runtime engine may decide to use a serial direct path read to access the data. If the single partitions don't pass the threshold the engine will use the conventional path.
    Here is a small example for my assertion:
    -- I create a simple partitioned table
    -- and a corresponding non-partitioned table
    -- with 1M rows
    drop table tab_part;
    create table tab_part (
        col_part number
      , padding varchar2(100)
    partition by list (col_part)
        partition P00 values (0)
      , partition P01 values (1)
      , partition P02 values (2)
      , partition P03 values (3)
      , partition P04 values (4)
      , partition P05 values (5)
      , partition P06 values (6)
      , partition P07 values (7)
      , partition P08 values (8)
      , partition P09 values (9)
    insert into tab_part
    select mod(rownum, 10)
         , lpad('*', 100, '*')
      from dual
    connect by level <= 1000000;
    exec dbms_stats.gather_table_stats(user, 'tab_part')
    drop table tab_nopart;
    create table tab_nopart
    as
    select *
      from tab_part;
    exec dbms_stats.gather_table_stats(user, 'tab_nopart')
    -- my _small_table_threshold is 1777 and the partitions
    -- have a size of ca. 1600 blocks while the non-partitioned table
    -- contains 15360 blocks
    -- I have to flush the buffer cache since
    -- the direct path access is only used
    -- if there are few blocks already in the cache
    alter system flush buffer_cache;
    -- the execution plans are not really exciting
    | Id  | Operation           | Name     | Rows  | Cost (%CPU)| Time     | Pstart| Pstop |
    |   0 | SELECT STATEMENT    |          |     1 |  8089   (0)| 00:00:41 |       |       |
    |   1 |  SORT AGGREGATE     |          |     1 |            |          |       |       |
    |   2 |   PARTITION LIST ALL|          |  1000K|  8089   (0)| 00:00:41 |     1 |    10 |
    |   3 |    TABLE ACCESS FULL| TAB_PART |  1000K|  8089   (0)| 00:00:41 |     1 |    10 |
    | Id  | Operation          | Name       | Rows  | Cost (%CPU)| Time     |
    |   0 | SELECT STATEMENT   |            |     1 |  7659   (0)| 00:00:39 |
    |   1 |  SORT AGGREGATE    |            |     1 |            |          |
    |   2 |   TABLE ACCESS FULL| TAB_NOPART |  1000K|  7659   (0)| 00:00:39 |
    But on my PC the FTS on the non-partitioned table is faster than the FTS on the partitions (1sec to 3 sec.) and v$sesstat shows the reason for this difference:
    -- non partitioned table
    NAME                                               DIFF
    table scan rows gotten                          1000000
    file io wait time                                 15313
    session logical reads                             15156
    physical reads                                    15153
    consistent gets direct                            15152
    physical reads direct                             15152
    DB time                                              95
    -- partitioned table
    NAME                                               DIFF
    file io wait time                               2746493
    table scan rows gotten                          1000000
    session logical reads                             15558
    physical reads                                    15518
    physical reads cache prefetch                     15202
    DB time                                             295
    (maybe my choose of counters is questionable)
    So it's possible to get slower access for an FTS on a partitioned table under special conditions.
    Regards
    Martin

  • Can I reinstall Windows in Boot Camp without unpartitioning my hard drive?

    Hi!
    I've had my iMac with Boot Camp for a while, and I'm the kind of person that likes to download lots of junk. On my Mac partition, I downloaded Parallels, and used it with my windows partition. Later that day, I found out that using Parallels with a Boot Camp partition can corrupt files, which is what happened. My Windows partition still works, but it's a little screwy.
    So, I was wondering if I can reinstall Windows XP without unpartitioning my hard drive, and without effecting Mac OS X.
    Thanks~

    Yes. It is quite straightforward - you boot into OS X, insert your Windows install disk, go to Applications (or is it Utilities?) open BootCamp - the Assistant opens. Then you ignore the partition options and just click on install Windows. BootCamp should be used for all things Windows.. ....I myself originally made the mistake of re-installing Windows one time while IN Windows (I didn't even think). I made a mess!
    Edit
    My machine came with Tiger. I was sooooo impressed when I purchased Leopard that I could choose to do an erase/install of OS X without even touching the Windows side. Really nice - I still have that original Windows install untouched!
    Message was edited by: NA Smith

  • Folder with question mark after unpartitioning hard drive

    I am running Snow Leopard on my Mac Book Pro.I unpartitioned my hard drive with Boot Camp. Now when I start up I get a folder with a question mark (not a flashing question mark) and then the apple logo. I repaired the disk permissions but there is no change. I don't know what to do now. I really do not want to reformat the hard drive if I don't really have to. What do I do now?

    Have you tired holding down the Alt/Option-key at startup to get the Boot Selection Screen ?
    If you can boot into your OSX go to System Preferences -> Startup Volume and reset your OSX to be the default.
    Stefan

  • WARNING: unpartitioning a mac hard drive

    WARNING: if you partition using bppt camp. "DO NOT UNPARTITON USING DISK UTILITY." IF ! you do, you will never unpartition it !!!!!!

    I, fotgot to mention! if you used boot camp, you'll, have unpartition it with boot camp!

  • Can I create unpartitioned index on partitioned table??

    Hi,
    I am not clear about the concepts of partitioned and non partitioned index.I was under impression that If we create a index on partitioned table it will be automatically becomes a partitioned index.But I cheked in my DB there are many unpartitioned indexes on large partitioned tables.
    Which one of these is efficient? wht is the concept of local and global related to these partitioned and unparitioned.I am bit confused.pls help me.
    Thanks

    There's nothing prevent you from creating a nonpartitioned index on partitioned table. The official name for it is Global Nonpartitioned Indexes
    Global Nonpartitioned Indexes
    Global nonpartitioned indexes behave just like a nonpartitioned index. They are commonly used in OLTP environments and offer efficient access to any individual record.
    http://download-west.oracle.com/docs/cd/B19306_01/server.102/b14220/partconc.htm#i461446

  • Unpartition+reinstall without cd or cd drive, just external firewire hd

    1) i have been given an iMac g4 with non-working cd drive, 10.4.11 Tiger, 700mhz which had its hd partitioned into 2 equal parts. i do not have an installation cd as was a give-away from a friend of a friend. i cloned/backed up the whole of part 1 to part 2 using superduper, then moved those backups to the external hd. superduper said it was going to erase everything on that drive if i used it to clone/backup directly to it, so i thought i'd try moving the disc backups over. i want to un-partition the iMac drive without losing all the what is on the computer. (toast, photoshop, protools, dreamweaver, and some other stuff that's purchased that i don't have installation discs for.) trying to figure out is there a way to download the Tiger startup installation files to my external and somehow boot from there to unpartition and install, instead of from an installation cd? i need help.
    2) then i want to figure out how to network the two, using a netgear router that i can't install from cd since the iMac's cd drive is broken.
    3) i'm not a mac native, so i don't know how to do anything.
    any help? i've tried since sunday to figure this out on my own.

    Hi, & welcome to the forums!
    1. Good that you have it backed up, but did you Clone it to the external drive? Is the external drive Firewire?
    2. You can network them, but Target mode would be how to install using the other's Optical drive...
    FW Target Made
    http://docs.info.apple.com/article.html?artnum=58583
    I'd call Apple with the Serial number of the Mac and get the Install Discs for that machine, or find where to buy them.
    3. Welcome aboard.

  • Importing into partitioned table from unpartitioned table

    I have taken export of a unpartitioned table using datapump.
    I want to import data using these dumpfiles into a partitioned table using impdp.
    Can you please provide me the basic script, I have tried running using the following script and I got the following error.
    noarg impdp $SCHEMA/$pw TABLES=\(ITPCS.ITPCS_BOM_GRT_SCAN\) EXCLUDE=STATISTICS parallel=4 dumpfile=dumpdir:exptable%U.dmp logfile=logdir:imptab2.log job_name=imptables_3 content=DATA_ONLY EXCLUDE=constraint,index,materialized_view
    Processing object type TABLE_EXPORT/TABLE/TBL_TABLE_DATA/TABLE/TABLE_DATA
    ORA-31693: Table data object "ITPCS"."ITPCS_BOM_GRT_SCAN" failed to load/unload and is being skipped due to error:
    ORA-00942: table or view does not exist
    ORA-06512: at "SYS.KUPD$DATA", line 1167
    ORA-14400: inserted partition key does not map to any partition
    Job "SYSTEM"."IMPTABLES_3" completed with 1 error(s) at 08:02

    pankaj2086 wrote:
    I have taken export of a unpartitioned table using datapump.
    I want to import data using these dumpfiles into a partitioned table using impdp.
    Can you please provide me the basic script, I have tried running using the following script and I got the following error.
    noarg impdp $SCHEMA/$pw TABLES=\(ITPCS.ITPCS_BOM_GRT_SCAN\) EXCLUDE=STATISTICS parallel=4 dumpfile=dumpdir:exptable%U.dmp logfile=logdir:imptab2.log job_name=imptables_3 content=DATA_ONLY EXCLUDE=constraint,index,materialized_view
    Processing object type TABLE_EXPORT/TABLE/TBL_TABLE_DATA/TABLE/TABLE_DATA
    ORA-31693: Table data object "ITPCS"."ITPCS_BOM_GRT_SCAN" failed to load/unload and is being skipped due to error:
    ORA-00942: table or view does not existWhat do you suppose the ora-00942 means? Looks pretty self explanatory to me. Have you looked it up? Have you verified that the target table exists in the target database?
    ORA-06512: at "SYS.KUPD$DATA", line 1167
    ORA-14400: inserted partition key does not map to any partitionAnd if the target table does exist, what do you suppose the ora-14400 means? Looks pretty self explanatory to me. Have you looked it up?

  • Strategy for "unpartitioning" hard drive.

    I have a G4 PowerBook with an 80 gig drive partitioned into 55/20. I want to unpartition it for several reasons, one being that I got a new 80 gig LaCie drive, and now I can finally do a nice 'n easy CCC backup that's bootable and also allows for incremental backups. I currently do full, disk image backups every now and then, but I want bootabiltity and incrementals.
    So here's what I was going to do, and I wanted to run it by everyone to see if there's a better way, and to make sure I'm not doing something dumb.
    -Format and repair permissions on the LaCie
    -Boot from OS X 10.4 DVD and use the Restore tab to clone the main partition (the 55 gig) to the LaCie.
    - Restart to PowerBook. Manually drag and drop the 20 gig data onto the LaCie (it's mostly iTunes and iPhoto libraries currently)
    -Boot from DVD again and use DU to repartition PowerBook back to one partition. Then use the Restore tab to clone the LaCie back to the PowerBook.
    -Boot to PowerBook. Wipe the LaCie and then use CCC to make a nice, full backup and continue to use it for incrementals.
    Anything look problematic or difficult with this?
    Will I have problems with programs that track machine ID (like FCP) or will I need to reinstall those?
    Thanks a lot for any answers or tips.
    EDIT: Just read that CCC doesn't do incrementals. I thought with psync, it would. If not, then I'd probably use SuperDuper (paid version).
    PowerBook G4   Mac OS X (10.4.8)  

    Your plan is sound, except that you only need the install disk to repair the original HDs disk and permissions
    You can then boot with internal HD and use its Disk Utility to format the new LaCie. Much faster than using the install disk. However, when formatting the new LaCie (Mac OS Extended), ensure that you also zero all data security option and install OS 9 drivers if the machine can boot from OS 9. The zeroing option will check for block integrity and map any bad ones out. Also, you can't repair permissions on a target that doesn't have a bootable OS on it. Finally, you can use CCC instead of Disk Utility's restore function to clone the original to the LaCie while booted on the original. Should also be faster than restoring using the install disk.

  • Problems unpartitioning HD in disk utilities

    Hello,
    I'm having difficulties restoring my hard drive into one volume. I'm using disk utilities to unpartition it and I do not want to erase the data on the main volume. The hard drive use to be split into three volumes and I got it down to two volumes, but when I try resizing the main volume to include the 2nd volume, receive this message after I click apply:
    "Partition failed with the error: Filesystem resize support required, such as HFS+ with Journaling enabled."
    Does anyone know what this means and how I can fix this?
    Also, I'm not sure if this has to do with anything, but I just recently upgraded from 10.3 to 10.5.1.

    RinnyRinRin wrote:
    I opned a terminal but I don't know how to read it or know what it means. It says:
    Filesystem 512-blocks Used Available Capacity Mounted on
    /dev/disk0s9 126711200 118649392 7549808 95% /
    and I do not have TechTools.
    You did perfectly.
    That first line indicates that you have one partition but it is nearly full (95%) and this is dangerous.
    You probably do not have enough room to change the partition since there is no room for any temporary files or whatever the partitioning might need. I believe you need a larger disk.
    I was asking about TechTools because they have an option to install itself on a small partition called an eDisk which causes some problems with partitioning.

  • Unpartitioning hard drive without making a back up?

    I have three partitions on my HD at the moment, and I want to create just one HD by unpartitioning.
    However, I don't have a separate hard drive or USB or anything that could hold the amount of stuff I have, so I was wondering if it's possible to unpartition in Disk Utility without backing up my files?
    I really hope so, because I can't really be bothered backing it up...

    My humble opinion ...
    When delete a partition you alter the boot sector.  Things can go wrong and you *can* lose mapping of all partitions.
    I would not call backup in this case a "bother".

  • Unpartitioning your hard drive

    I wanted to know how to unpartition my hard drive on my macbook pro. I partitioned my hard drive to run windows through bootcamp. But now I would like to now combine them again. Could someone please help.

    You can use Boot Camp Assistant (simple way) or Disk Utility (more advanced way)...
    To use Disk Utility, click on the Hard Disk you need to change the partition structure on, click the Partition option and then click on the WINDOWS partition (under Volume Scheme) and the minus button. This will remove the partition and leave the MacOS partition. To get the space back that you lost from the Windows partition, click and drag the MacOS partition (use the corner) to the bottom of the box it is contained within and click Apply.

  • How does one unpartition?

    I partitioned my hard drive when I first had my MacBook Pro, thinking I would use some parallel system (windows, etc. on my Mac). I didn't get around to do it until now. Now, I'm running out of storage space, and I want to have the 50 GB I have allotted for the parallel system be used for my hard disk storage.
    How do I unpartition?

    Did you use Disk Utility to add the partition?
    If you created the partition using the Bootcamp Assistant simply reopen it and choose to remove the partition, or revert to a single volume.
    If Disk Utility was used:
    1. Open Disk Utility.
    2. Highlight the very first entry on the left side (this is your physical hard drive)
    3. Click the "Partition" tab on the right side.
    4. Highlight the undesired partition from the graphical representation of your drive.
    4. Click the minus sign on the bottom and confirm the deletion of the partition.
    5. Once the partition has been removed click the remaining partition.
    6. Enter "99999" into the "space" field on the right and then press "tab" on your keyboard to have it autopopulate the largest amount possible.
    7. Click the "apply" button at the bottom right.
    EE

  • Unpartition error bootcamp

    Hi all, I tried to remove windows 7 via bootcamp and an "unexpected error" occurred. The process never finished and I had to force quit bootcamp. Now I only have MacOsX with 439GB left out of 500GB. 60GB was the Windows partition. How can I get the 60GB back or anyway unpartition the disk?
    Thank you in advance for your help.
    Mac OSX 10.8.3
    Macbook Pro
    2.66 Intel core i7
    4GB 1067 DDR3

    Hi all, I tried to remove windows 7 via bootcamp and an "unexpected error" occurred. The process never finished and I had to force quit bootcamp. Now I only have MacOsX with 439GB left out of 500GB. 60GB was the Windows partition. How can I get the 60GB back or anyway unpartition the disk?
    Thank you in advance for your help.
    Mac OSX 10.8.3
    Macbook Pro
    2.66 Intel core i7
    4GB 1067 DDR3

  • How to Unpartition my hard drive

    I have a macbook pro and the 500Gb hard drive is partitioned. I want to unpartition it so i have all 500 gigs to use, and I don't know how to do that. I know next to nothing about the internal workings or how to do this, so someone who responds please spell it out for me in pretty much layman's terms. No I was not the first buyer, so i don't have any discs, I'm the second owner, and all that good stuff.

    Back up your data, open the Disk Utility in the /Applications/Utilities/ folder, click on the entire drive, choose the Partition tab, delete the second one in the list, and resize the first to the drive’s capacity.
    If the drive’s partitioned to use Boot Camp, use the Boot Camp Assistant instead.
    (113574)

  • How to unpartition D and its recovery partition and add to C using Windows 8.1 tools

    I have a new Fujitsu Lifebook, Windows 8.1 with a 600gb disk and when I go into Disk management I see the following partitions in this order.
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    Healthy (EFI Partition) 260 mb    100% fre
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