I have run this command from and older posting of your forum on a same issue
i.e. system volume info not accesible on my External Toshiba HDD .250 GBS
This happened after I formatted my disk to clean it in order to backup my WXP system
with Easeus Todo Backup free application.
Result it backed up my data and files onto the internal HDD instead of External.
When I tried to open again my External USB HDD it denies access
In order for my OS WXP to work properly I had to uninstall Easeus Todo Backup from my PC..
Same HDD works and opens on my laptop and it is recognized.
Also other USB s and flash disks work properly on my WXP OS.
attrib -h -r -s /s /d g:\*.*
where g refers to your external hard drive letter
this should unhide your files
Let me know how it works
Unfortunately it did not worked stating " h is not recognized as an internal or external command
operable program or hatch file.
My internal HDD is C: and external is F:.
Could you please assist me to work around this issue.
Thanka a lot.