Ext HDD works in Vista but not XP dual boot

Lacie 1tb external hard drive
July 25, 2010 at 09:02:20
Specs: Windows XP
I bought myself a Lacie 1TB external hard drive with USB connectivity. Im using it with my laptop, Dell Inspiron 1501 and i have 2 internal HD's too, one with Windows XP Pro, second with Windows Vista. Im not using both internal ones together, when connect one, i disconnect the other.
The problem is that if I run Vista, all is ok, i can do everything on my external hard drive, but when i go with XP, there is no other hard drive as that one internal with XP. Device manager shows a USB mass storage device but no other HDD's. also when i connect it then i get the "Safely Remove Hardware" icon and all, but no hard drive...
with Vista is all ok.

Any solutions to my problem?
Thanks in advance :)

See More: Ext HDD works in Vista but not XP dual boot

Report •

July 26, 2010 at 10:05:53
Did you software partition (using the NTFS) and format the external drive in Vista ?

I know from experience and from looking on the web that Vista (and probably Windows 7) makes NTFS partitions slightly differently than XP and 2000 does.

I have a computer that is dual booting Vista and XP MCE 2005, by using a third party boot manager program.
When I boot XP, I cannot see the one partition I made that has Vista on it, which was made by Vista.
When I boot Vista, I can see all partitions on the two hard drives.
(Both operating systems are in partitions on one of the drives, and the third party boot manager program is installed on the same drive.)

In my case, all the partitions on the two hard drives were made (software partitioned using the NTFS and formatted) by XP except for the one that has Vista on it.

If the same applies, if the partition(s) on the external drive was(were) made by Vista, if you delete the existing partition(s) on the external drive in Vista, and make it (them) again in XP rather than Vista, both operating systems will see the partition(s) on the external drive.
If you have data on the external drive you don't want to lose, you could copy it to elsewhere before you delete the partition(s).
If you have too much data on the drive to copy to available space elsewhere, there are web sites you can temporarily move your data to, then move it back.

Report •

July 26, 2010 at 11:41:28
"NTFS has five released versions:"

(and # v3.1 has 3 "subversions")

"# v1.0 with NT 3.1, released mid-1993
# v1.1 with NT 3.5, released fall 1994
# v1.2 with NT 3.51 (mid-1995) and NT 4 (mid-1996) (occasionally referred to as "NTFS 4.0", because OS version is 4.0)
# v3.0 from Windows 2000 ("NTFS V5.0")
# v3.1 from Windows XP (autumn 2001; "NTFS V5.1"), Windows Server 2003 (spring 2003; occasionally "NTFS V5.2"),
Windows Vista (mid-2005) (occasionally "NTFS V6.0"), Windows Server 2008, Windows 7.

Microsoft Windows

While the different NTFS versions are for the most part fully forward- and backward-compatible, there are technical considerations for mounting newer NTFS volumes in older versions of Microsoft Windows. This affects dual-booting, and external portable hard drives."


One of the differences for the NTFS 6.0 used in Vista and Windows 7 is NTFS partitions can have sectors larger than 512 bytes - all previous file systems (software partitioning systems) have a max 512 byte sector size.
I assume XP can't read the data on a partition if the sector size is larger than 512 bytes, but Vista can read NTFS partitions made with an older version of NTFS fine.

That can cause problems on a multiboot system.


Search result -
You may receive the error: “The disk management services could not complete the operation” when you try to convert a disk (MBR or GPT) to a dynamic disk

Apparently you can also have the problem of a Vista partition disappearing if not all partitions were made by Vista....
The partition that hosts Windows Vista may disappear if you use Windows XP to create a partition on a computer that has both Windows XP and Windows Vista installed

Report •
Related Solutions

Ask Question