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Preparing Advanced Format hard drives 

for Microsoft Windows installations on HP 
Business Notebook PCs and Desktop PCs  

   

 

 

Technical white paper  

 

Table of contents 

Executive summary ............................................................................................................................... 2

 

What does the Advanced Format drive mean to you? .............................................................................. 2

 

Important tips................................................................................................................................... 4

 

Validating partition alignment ............................................................................................................... 5

 

Using DISKEXT ................................................................................................................................. 5

 

Using WMIC ................................................................................................................................... 6

 

Using DISKPART ............................................................................................................................... 6

 

Sample validation ............................................................................................................................ 7

 

Enhancing the performance of small writes ............................................................................................. 8

 

Frequently asked questions ................................................................................................................... 9

 

Appendix A: Technical background ..................................................................................................... 11

 

Partition alignment ......................................................................................................................... 11

 

Why alignment helps ...................................................................................................................... 12

 

For more information .......................................................................................................................... 13

 

 
 

Summary of Contents for Pavilion dv8300

Page 1: ...ecutive summary 2 What does the Advanced Format drive mean to you 2 Important tips 4 Validating partition alignment 5 Using DISKEXT 5 Using WMIC 6 Using DISKPART 6 Sample validation 7 Enhancing the performance of small writes 8 Frequently asked questions 9 Appendix A Technical background 11 Partition alignment 11 Why alignment helps 12 For more information 13 ...

Page 2: ...f Advanced Format drives and describes the actions you should take to optimize the performance of your HP Business Notebook or Desktop PC In addition this white paper presents a Frequently asked questions section and provides an appendix with additional technical background What does the Advanced Format drive mean to you This section outlines a range of scenarios involving the use of Advanced Form...

Page 3: ...s Vista SP1 or later or Windows 7 no realignment is required since these OSs are Advanced Format aware B This scenario is not supported by HP C For WinPE installations prior to 3 0 install Windows Automated Installation Kit AIK To optimize performance with Windows 7 or WinPE apply Microsoft Knowledge Base article 982018 For Intel platforms upgrade to Intel Rapid Storage Technology RST 9 6 or later...

Page 4: ...the value of the ExtendOemPartition parameter from 1 to 0 For more information refer to Microsoft Knowledge Base article 240126 Encrypting drives For optimal data protection you should ensure that encrypted Advanced Format drives are suitably aligned Thus before encrypting an Advanced Format drive you should run the Paragon Partition Alignment Tool on this drive An encrypted drive that is misalign...

Page 5: ...8 is performance degradation associated with a Windows 7 or WinPE platform performing many small writes to an Advanced Format drive For example using the ImageX command line tool to apply a Windows image wim file to an Advanced Format drive would take significantly longer than applying the same image to a traditional hard drive To optimize performance you should apply the appropriate hotfix to you...

Page 6: ...table Windows PE 3 0 RAM media 2 Execute the DISKPART utility to display information about specific system partitions For example use the following script is to display information about Disk 0 Partition 1 as shown in Figure 1 diskpart select disk 0 select partition 1 detail partition Figure 1 Sample script output Partition 1 Type 07 Hidden No Active No Offset in Bytes 1048576 Volume Ltr Label Fs ...

Page 7: ...itions Partition Partition size Starting offset 0 208 666 624 B 1 048 576 B 208 666 624 4 096 50 944 1 048 576 4 096 256 1 732 388 392 960 B 209 715 200 B 732 388 392 960 4 096 178 805 760 209 715 200 4 096 51 200 2 17 449 353 216 B 732 388 392 960 B 17 449 353 216 4 096 4 260 096 732 388 392 960 4 096 178 805 760 3 107 864 064 B 750 047 461 376 B 107864064 4 096 26 334 750 047 461 376 4 096 183 1...

Page 8: ...Hotfix aspx kbnum 982018 kbln en us 2 Unzip the download file by double clicking on it 3 The Windows6 1 KB982018 x86 MSU file should appear in your c drive Expand this file a Launch the command prompt with Administrator rights b At the prompt enter the following expand exe c Windows6 1 KB982018 x86 MSU f c 4 Select Start All Programs Windows OPK or Windows AIK 5 Right click Deployment Tools Comman...

Page 9: ...ironment or even if you only have drives with 512 byte sectors It is immaterial whether you are running or plan to run Windows XP or Windows 2000 or a newer operating system However you must use Windows 7 or Windows Vista SP1 or later to partition the hard drive Are there any differences between Advanced Format drive models Some drive models have noticeably superior performance though slightly hig...

Page 10: ...perations thus if partitions are misaligned not only will performance be degraded but you also increase the risk of premature drive failure Using the Paragon Partition Alignment Tool to align partitions will eliminate all redundant read write operations thus enhancing drive performance and potentially extending the life of the drive I have an image created for a drive with 512 byte sectors that I ...

Page 11: ...h 4 KB sectors when formatting a partition However when the physical media and file system both use 4 KB sectors while the SATA interface is 512 byte misalignment can occur impacting write performance Note Misalignment occurs while file system sectors cross physical sector boundaries To address the risk of misalignment a 512e drive emulates the logical 512 byte interface taking care of all physica...

Page 12: ...the partition boot sector is located at logical block address 63 which is not divisible by eight Thus the remaining information in the partition information directories and files is not aligned to physical addresses on the disk drive However if logical writes are aligned to physical sectors and write lengths are in multiples of 4 KB then new data can completely replace old data the drive does not ...

Page 13: ...d Guide for Windows Deployment Services http technet microsoft com en us library cc771670 WS 10 aspx Partition alignment for SUSE Linux http www novell com support viewContent do exte rnalId 7007193 sliceId 1 Intel RST support for 4 KB sectors http www intel com support chipsets imsm s b CS 031502 htm IDEMA Advanced Format downloads http www idema org p 1563 Share with colleagues Copyright 2010 20...

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